custom/code_types.inc.php

   1 <?php
   2
   3 /**
   4  * Library and data structure to manage Code Types and code type lookups.
   5  *
   6  * The data structure is the $code_types array.
   7  * The $code_types array is built from the code_types sql table and provides
   8  * abstraction of diagnosis/billing code types.  This is desirable
   9  * because different countries or fields of practice use different methods for
  10  * coding diagnoses, procedures and supplies.  Fees will not be relevant where
  11  * medical care is socialized.
  12  * <pre>Attributes of the $code_types array are:
  13  *  active   - 1 if this code type is activated
  14  *  id       - the numeric identifier of this code type in the codes table
  15  *  claim    - 1 if this code type is used in claims
  16  *  fee      - 1 if fees are used, else 0
  17  *  mod      - the maximum length of a modifier, 0 if modifiers are not used
  18  *  just     - the code type used for justification, empty if none
  19  *  rel      - 1 if other billing codes may be "related" to this code type
  20  *  nofs     - 1 if this code type should NOT appear in the Fee Sheet
  21  *  diag     - 1 if this code type is for diagnosis
  22  *  proc     - 1 if this code type is a procedure/service
  23  *  label    - label used for code type
  24  *  external - 0 for storing codes in the code table
  25  *             1 for storing codes in external ICD10 Diagnosis tables
  26  *             2 for storing codes in external SNOMED (RF1) Diagnosis tables
  27  *             3 for storing codes in external SNOMED (RF2) Diagnosis tables
  28  *             4 for storing codes in external ICD9 Diagnosis tables
  29  *             5 for storing codes in external ICD9 Procedure/Service tables
  30  *             6 for storing codes in external ICD10 Procedure/Service tables
  31  *             7 for storing codes in external SNOMED Clinical Term tables
  32  *             8 for storing codes in external SNOMED (RF2) Clinical Term tables (for future)
  33  *             9 for storing codes in external SNOMED (RF1) Procedure Term tables
  34  *             10 for storing codes in external SNOMED (RF2) Procedure Term tables (for future)
  35  *  term     - 1 if this code type is used as a clinical term
  36  *  problem  - 1 if this code type is used as a medical problem
  37  *  drug     - 1 if this code type is used as a medication
  38  *
  39  *  </pre>
  40  *
  41  *
  42  * @package   OpenEMR
  43  * @link      https://www.open-emr.org
  44  * @author    Rod Roark <rod@sunsetsystems.com>
  45  * @author    Brady Miller <brady.g.miller@gmail.com>
  46  * @author    Kevin Yeh <kevin.y@integralemr.com>
  47  * @author    Jerry Padgett <sjpadgett@gmail.com>
  48  * @copyright Copyright (c) 2006-2010 Rod Roark <rod@sunsetsystems.com>
  49  * @copyright Copyright (c) 2019 Brady Miller <brady.g.miller@gmail.com>
  50  * @copyright Copyright (c) 2021-2022 Robert Down <robertdown@live.com>
  51  * @license   https://github.com/openemr/openemr/blob/master/LICENSE GNU General Public License 3
  52  */
  53
  54 use OpenEMR\Events\Codes\ExternalCodesCreatedEvent;
  55 use Symfony\Component\EventDispatcher\EventDispatcher;
  56
  57 require_once(__DIR__ . "/../library/csv_like_join.php");
  58
  59 $code_types = array();
  60 global $code_types;
  61 $ctres = sqlStatement("SELECT * FROM code_types WHERE ct_active=1 ORDER BY ct_seq, ct_key");
  62 while ($ctrow = sqlFetchArray($ctres)) {
  63     $code_types[$ctrow['ct_key']] = array(
  64     'active' => $ctrow['ct_active'  ],
  65     'id'   => $ctrow['ct_id'  ],
  66     'fee'  => $ctrow['ct_fee' ],
  67     'mod'  => $ctrow['ct_mod' ],
  68     'just' => $ctrow['ct_just'],
  69     'rel'  => $ctrow['ct_rel' ],
  70     'nofs' => $ctrow['ct_nofs'],
  71     'diag' => $ctrow['ct_diag'],
  72     'mask' => $ctrow['ct_mask'],
  73     'label' => ( (empty($ctrow['ct_label'])) ? $ctrow['ct_key'] : $ctrow['ct_label'] ),
  74     'external' => $ctrow['ct_external'],
  75     'claim' => $ctrow['ct_claim'],
  76     'proc' => $ctrow['ct_proc'],
  77     'term' => $ctrow['ct_term'],
  78     'problem' => $ctrow['ct_problem'],
  79     'drug' => $ctrow['ct_drug']
  80     );
  81     if (!array_key_exists($GLOBALS['default_search_code_type'], $code_types)) {
  82         reset($code_types);
  83         $GLOBALS['default_search_code_type'] = key($code_types);
  84     }
  85 }
  86
  87 /** This array contains metadata describing the arrangement of the external data
  88  *  tables for storing codes.
  89  */
  90 $code_external_tables = array();
  91 global $code_external_tables;
  92 define('EXT_COL_CODE', 'code');
  93 define('EXT_COL_DESCRIPTION', 'description');
  94 define('EXT_COL_DESCRIPTION_BRIEF', 'description_brief');
  95 define('EXT_TABLE_NAME', 'table');
  96 define('EXT_FILTER_CLAUSES', 'filter_clause');
  97 define('EXT_VERSION_ORDER', 'filter_version_order');
  98 define('EXT_JOINS', 'joins');
  99 define('JOIN_TABLE', 'join');
 100 define('JOIN_FIELDS', 'fields');
 101 define('DISPLAY_DESCRIPTION', "display_description");
 102
 103 /**
 104  * This is a helper function for defining the metadata that describes the tables
 105  *
 106  * @param type $results             A reference to the global array which stores all the metadata
 107  * @param type $index               The external table ID.  This corresponds to the value in the code_types table in the ct_external column
 108  * @param type $table_name          The name of the table which stores the code informattion (e.g. icd9_dx_code
 109  * @param type $col_code            The name of the column which is the code
 110  * @param type $col_description     The name of the column which is the description
 111  * @param type $col_description_brief The name of the column which is the brief description
 112  * @param type $filter_clauses      An array of clauses to be included in the search "WHERE" clause that limits results
 113  * @param type $version_order       How to choose between different revisions of codes
 114  * @param type $joins               An array which describes additional tables to join as part of a code search.
 115  */
 116 function define_external_table(&$results, $index, $table_name, $col_code, $col_description, $col_description_brief, $filter_clauses = array(), $version_order = "", $joins = array(), $display_desc = "")
 117 {
 118     $results[$index] = array(EXT_TABLE_NAME => $table_name,
 119                            EXT_COL_CODE => $col_code,
 120                            EXT_COL_DESCRIPTION => $col_description,
 121                            EXT_COL_DESCRIPTION_BRIEF => $col_description_brief,
 122                            EXT_FILTER_CLAUSES => $filter_clauses,
 123                            EXT_JOINS => $joins,
 124                            EXT_VERSION_ORDER => $version_order,
 125                            DISPLAY_DESCRIPTION => $display_desc
 126                            );
 127 }
 128 // In order to treat all the code types the same for lookup_code_descriptions, we include metadata for the original codes table
 129 define_external_table($code_external_tables, 0, 'codes', 'code', 'code_text', 'code_text_short', array(), 'id');
 130
 131 // ICD9 External Definitions
 132 define_external_table($code_external_tables, 4, 'icd9_dx_code', 'formatted_dx_code', 'long_desc', 'short_desc', array("active='1'"), 'revision DESC');
 133 define_external_table($code_external_tables, 5, 'icd9_sg_code', 'formatted_sg_code', 'long_desc', 'short_desc', array("active='1'"), 'revision DESC');
 134 //**** End ICD9 External Definitions
 135
 136 // SNOMED Definitions
 137 // For generic SNOMED-CT, there is no need to join with the descriptions table to get a specific description Type
 138
 139 // For generic concepts, use the fully specified description (DescriptionType=3) so we can tell the difference between them.
 140 define_external_table($code_external_tables, 7, 'sct_descriptions', 'ConceptId', 'Term', 'Term', array("DescriptionStatus=0","DescriptionType=3"), "");
 141
 142 // To determine codes, we need to evaluate data in both the sct_descriptions table, and the sct_concepts table.
 143 // the base join with sct_concepts is the same for all types of SNOMED definitions, so we define the common part here
 144 $SNOMED_joins = array(JOIN_TABLE => "sct_concepts",JOIN_FIELDS => array("sct_descriptions.ConceptId=sct_concepts.ConceptId"));
 145
 146 // For disorders, use the preferred term (DescriptionType=1)
 147 define_external_table($code_external_tables, 2, 'sct_descriptions', 'ConceptId', 'Term', 'Term', array("DescriptionStatus=0","DescriptionType=1"), "", array($SNOMED_joins));
 148 // Add the filter to choose only disorders. This filter happens as part of the join with the sct_concepts table
 149 array_push($code_external_tables[2][EXT_JOINS][0][JOIN_FIELDS], "FullySpecifiedName like '%(disorder)'");
 150
 151 // SNOMED-PR definition
 152 define_external_table($code_external_tables, 9, 'sct_descriptions', 'ConceptId', 'Term', 'Term', array("DescriptionStatus=0","DescriptionType=1"), "", array($SNOMED_joins));
 153 // Add the filter to choose only procedures. This filter happens as part of the join with the sct_concepts table
 154 array_push($code_external_tables[9][EXT_JOINS][0][JOIN_FIELDS], "FullySpecifiedName like '%(procedure)'");
 155
 156 // SNOMED RF2 definitions
 157 define_external_table($code_external_tables, 11, 'sct2_description', 'conceptId', 'term', 'term', array("active=1"), "");
 158 if (isSnomedSpanish()) {
 159     define_external_table($code_external_tables, 10, 'sct2_description', 'conceptId', 'term', 'term', array("active=1", "term LIKE '%(trastorno)'"), "");
 160     define_external_table($code_external_tables, 12, 'sct2_description', 'conceptId', 'term', 'term', array("active=1", "term LIKE '%(procedimiento)'"), "");
 161 } else {
 162     define_external_table($code_external_tables, 10, 'sct2_description', 'conceptId', 'term', 'term', array("active=1", "term LIKE '%(disorder)'"), "");
 163     define_external_table($code_external_tables, 12, 'sct2_description', 'conceptId', 'term', 'term', array("active=1", "term LIKE '%(procedure)'"), "");
 164 }
 165
 166 //**** End SNOMED Definitions
 167
 168 // ICD 10 Definitions
 169 define_external_table($code_external_tables, 1, 'icd10_dx_order_code', 'formatted_dx_code', 'long_desc', 'short_desc', array("active='1'","valid_for_coding = '1'"), 'revision DESC');
 170 define_external_table($code_external_tables, 6, 'icd10_pcs_order_code', 'pcs_code', 'long_desc', 'short_desc', array("active='1'","valid_for_coding = '1'"), 'revision DESC');
 171 //**** End ICD 10 Definitions
 172
 173 define_external_table($code_external_tables, 13, 'valueset', 'code', 'description', 'description', array(), '');
 174 define_external_table($code_external_tables, 14, 'valueset_oid', 'code', 'description', 'description', array(), '');
 175
 176 /**
 177  * This array stores the external table options. See above for $code_types array
 178  * 'external' attribute  for explanation of the option listings.
 179  * @var array
 180  */
 181 global $ct_external_options;
 182 $ct_external_options = array(
 183   '0' => xl('No'),
 184   '4' => xl('ICD9 Diagnosis'),
 185   '5' => xl('ICD9 Procedure/Service'),
 186   '1' => xl('ICD10 Diagnosis'),
 187   '6' => xl('ICD10 Procedure/Service'),
 188   '2' => xl('SNOMED (RF1) Diagnosis'),
 189   '7' => xl('SNOMED (RF1) Clinical Term'),
 190   '9' => xl('SNOMED (RF1) Procedure'),
 191   '10' => xl('SNOMED (RF2) Diagnosis'),
 192   '11' => xl('SNOMED (RF2) Clinical Term'),
 193   '12' => xl('SNOMED (RF2) Procedure'),
 194   '13' => xl('CQM (Mixed Types) Value Set'),
 195   '14' => xl('CQM OID Value Set')
 196 );
 197
 198 /**
 199  * @var EventDispatcher
 200  */
 201 $eventDispatcher = $GLOBALS['kernel']->getEventDispatcher();
 202 $externalCodesEvent = new ExternalCodesCreatedEvent($ct_external_options);
 203 $eventDispatcher->dispatch($externalCodesEvent, ExternalCodesCreatedEvent::EVENT_HANDLE);
 204 $ct_external_options = $externalCodesEvent->getExternalCodeData();
 205
 206 /**
 207  *  Checks to see if using spanish snomed
 208  */
 209 function isSnomedSpanish()
 210 {
 211     // See if most recent SNOMED entry is International:Spanish
 212     $sql = sqlQuery("SELECT `revision_version` FROM `standardized_tables_track` WHERE `name` = 'SNOMED' ORDER BY `id` DESC");
 213     if ((!empty($sql)) && ($sql['revision_version'] == "International:Spanish")) {
 214         return true;
 215     }
 216     return false;
 217 }
 218
 219 /**
 220  * Checks is fee are applicable to any of the code types.
 221  *
 222  * @return boolean
 223  */
 224 function fees_are_used()
 225 {
 226     global $code_types;
 227     foreach ($code_types as $value) {
 228         if ($value['fee'] && $value['active']) {
 229             return true;
 230         }
 231     }
 232
 233     return false;
 234 }
 235
 236 /**
 237  * Checks if modifiers are applicable to any of the code types.
 238  * (If a code type is not set to show in the fee sheet, then is ignored)
 239  *
 240  * @param  boolean $fee_sheet Will ignore code types that are not shown in the fee sheet
 241  * @return boolean
 242  */
 243 function modifiers_are_used($fee_sheet = false)
 244 {
 245     global $code_types;
 246     foreach ($code_types as $value) {
 247         if ($fee_sheet && !empty($value['nofs'])) {
 248             continue;
 249         }
 250
 251         if ($value['mod'] && $value['active']) {
 252             return true;
 253         }
 254     }
 255
 256     return false;
 257 }
 258
 259 /**
 260  * Checks if justifiers are applicable to any of the code types.
 261  *
 262  * @return boolean
 263  */
 264 function justifiers_are_used()
 265 {
 266     global $code_types;
 267     foreach ($code_types as $value) {
 268         if (!empty($value['just']) && $value['active']) {
 269             return true;
 270         }
 271     }
 272
 273     return false;
 274 }
 275
 276 /**
 277  * Checks is related codes are applicable to any of the code types.
 278  *
 279  * @return boolean
 280  */
 281 function related_codes_are_used()
 282 {
 283     global $code_types;
 284     foreach ($code_types as $value) {
 285         if ($value['rel'] && $value['active']) {
 286             return true;
 287         }
 288     }
 289
 290     return false;
 291 }
 292
 293 /**
 294  * Convert a code type id (ct_id) to the key string (ct_key)
 295  *
 296  * @param  integer $id
 297  * @return string
 298  */
 299 function convert_type_id_to_key($id)
 300 {
 301     global $code_types;
 302     foreach ($code_types as $key => $value) {
 303         if ($value['id'] == $id) {
 304             return $key;
 305         }
 306     }
 307 }
 308
 309 /**
 310  * Checks to see if code allows justification (ct_just)
 311  *
 312  * @param   string   $key
 313  * @return  boolean
 314  */
 315 function check_is_code_type_justify($key)
 316 {
 317     global $code_types;
 318
 319     if (!empty($code_types[$key]['just'])) {
 320           return true;
 321     } else {
 322         return false;
 323     }
 324 }
 325
 326 /**
 327  * Checks if a key string (ct_key) is selected for an element/filter(s)
 328  *
 329  * @param   string   $key
 330  * @param   array    $filter (array of elements that can include 'active','fee','rel','nofs','diag','claim','proc','term','problem')
 331  * @return  boolean
 332  */
 333 function check_code_set_filters($key, $filters = array())
 334 {
 335     global $code_types;
 336
 337     if (empty($filters)) {
 338         return false;
 339     }
 340
 341     foreach ($filters as $filter) {
 342         if (array_key_exists($key, $code_types)) {
 343             if ($code_types[$key][$filter] != 1) {
 344                 return false;
 345             }
 346         }
 347     }
 348
 349  // Filter was passed
 350     return true;
 351 }
 352
 353 /**
 354  * Return listing of pertinent and active code types.
 355  *
 356  * Function will return listing (ct_key) of pertinent
 357  * active code types, such as diagnosis codes or procedure
 358  * codes in a chosen format. Supported returned formats include
 359  * as 1) an array and as 2) a comma-separated lists that has been
 360  * process by urlencode() in order to place into URL  address safely.
 361  *
 362  * @param  string       $category       category of code types('diagnosis', 'procedure', 'clinical_term', 'active' or 'medical_problem')
 363  * @param  string       $return_format  format or returned code types ('array' or 'csv')
 364  * @return string/array
 365  */
 366 function collect_codetypes($category, $return_format = "array")
 367 {
 368     global $code_types;
 369
 370     $return = array();
 371
 372     foreach ($code_types as $ct_key => $ct_arr) {
 373         if (!$ct_arr['active']) {
 374             continue;
 375         }
 376
 377         if ($category == "diagnosis") {
 378             if ($ct_arr['diag']) {
 379                 $return[] = $ct_key;
 380             }
 381         } elseif ($category == "procedure") {
 382             if ($ct_arr['proc']) {
 383                 $return[] = $ct_key;
 384             }
 385         } elseif ($category == "clinical_term") {
 386             if ($ct_arr['term']) {
 387                 $return[] = $ct_key;
 388             }
 389         } elseif ($category == "active") {
 390             if ($ct_arr['active']) {
 391                 $return[] = $ct_key;
 392             }
 393         } elseif ($category == "medical_problem") {
 394             if ($ct_arr['problem']) {
 395                 $return[] = $ct_key;
 396             }
 397         } elseif ($category == "drug") {
 398             if ($ct_arr['drug']) {
 399                 $return[] = $ct_key;
 400             }
 401         } else {
 402             //return nothing since no supported category was chosen
 403         }
 404     }
 405
 406     if ($return_format == "csv") {
 407         //return it as a csv string
 408         return csv_like_join($return);
 409     }
 410
 411     //$return_format == "array"
 412     //return the array
 413     return $return;
 414 }
 415
 416 /**
 417  * Return the code information for a specific code.
 418  *
 419  * Function is able to search a variety of code sets. See the code type items in the comments at top
 420  * of this page for a listing of the code sets supported.
 421  *
 422  * @param  string    $form_code_type  code set key
 423  * @param  string    $code            code
 424  * @param  boolean   $active          if true, then will only return active entries (not pertinent for PROD code sets)
 425  * @return mixed recordset                  - will contain only one item (row).
 426  */
 427 function return_code_information($form_code_type, $code, $active = true)
 428 {
 429     return code_set_search($form_code_type, $code, false, $active, true);
 430 }
 431
 432 /**
 433 * The main code set searching function.
 434 *
 435 * It will work for searching one or numerous code sets simultaneously.
 436 * Note that when searching numerous code sets, you CAN NOT search the PROD
 437 * codes; the PROD codes can only be searched by itself.
 438 *
 439 * @param string/array  $form_code_type   code set key(s) (can either be one key in a string or multiple/one key(s) in an array
 440 * @param string        $search_term      search term
 441 * @param integer       $limit            Number of results to return (NULL means return all)
 442 * @param string        $category         Category of code sets. This WILL OVERRIDE the $form_code_type setting (category options can be found in the collect_codetypes() function above)
 443 * @param boolean       $active           if true, then will only return active entries
 444 * @param array         $modes            Holds the search modes to process along with the order of processing (if NULL, then default behavior is sequential code then description search)
 445 * @param boolean       $count            if true, then will only return the number of entries
 446 * @param integer       $start            Query start limit (for pagination) (Note this setting will override the above $limit parameter)
 447 * @param integer       $number           Query number returned (for pagination) (Note this setting will override the above $limit parameter)
 448 * @param array         $filter_elements  Array that contains elements to filter
 449 * @return mixed recordset/integer              - Will contain either a integer(if counting) or the results (recordset)
 450 */
 451 function main_code_set_search($form_code_type, $search_term, $limit = null, $category = null, $active = true, $modes = null, $count = false, $start = null, $number = null, $filter_elements = array())
 452 {
 453
 454     // check for a category
 455     if (!empty($category)) {
 456         $form_code_type = collect_codetypes($category, "array");
 457     }
 458
 459     // do the search
 460     if (!empty($form_code_type)) {
 461         if (is_array($form_code_type) && (count($form_code_type) > 1)) {
 462             // run the multiple code set search
 463             return multiple_code_set_search($form_code_type, $search_term, $limit, $modes, $count, $active, $start, $number, $filter_elements);
 464         }
 465
 466         if (is_array($form_code_type) && (count($form_code_type) == 1)) {
 467             // prepare the variable (ie. convert the one array item to a string) for the non-multiple code set search
 468             $form_code_type = $form_code_type[0];
 469         }
 470
 471         // run the non-multiple code set search
 472         return sequential_code_set_search($form_code_type, $search_term, $limit, $modes, $count, $active, $start, $number, $filter_elements);
 473     }
 474 }
 475
 476 /**
 477  * Main "internal" code set searching function.
 478  *
 479  * Function is able to search a variety of code sets. See the 'external' items in the comments at top
 480  * of this page for a listing of the code sets supported. Also note that Products (using PROD as code type)
 481  * is also supported. (This function is not meant to be called directly)
 482  *
 483  * @param  string    $form_code_type  code set key (special keywords are PROD) (Note --ALL-- has been deprecated and should be run through the multiple_code_set_search() function instead)
 484  * @param  string    $search_term     search term
 485  * @param  boolean   $count           if true, then will only return the number of entries
 486  * @param  boolean   $active          if true, then will only return active entries (not pertinent for PROD code sets)
 487  * @param  boolean   $return_only_one if true, then will only return one perfect matching item
 488  * @param  integer   $start           Query start limit
 489  * @param  integer   $number          Query number returned
 490  * @param  array     $filter_elements Array that contains elements to filter
 491  * @param  integer   $limit           Number of results to return (NULL means return all); note this is ignored if set $start/number
 492  * @param  array     $mode            'default' mode searches code and description, 'code' mode only searches code, 'description' mode searches description (and separates words); note this is ignored if set $return_only_one to TRUE
 493  * @param  array     $return_query    This is a mode that will only return the query (everything except for the LIMIT is included) (returned as an array to include the query string and binding array)
 494  * @return mixed recordset/integer/array
 495  */
 496 function code_set_search($form_code_type, $search_term = "", $count = false, $active = true, $return_only_one = false, $start = null, $number = null, $filter_elements = array(), $limit = null, $mode = 'default', $return_query = false)
 497 {
 498     global $code_types, $code_external_tables;
 499
 500   // Figure out the appropriate limit clause
 501     $limit_query = limit_query_string($limit, $start, $number, $return_only_one);
 502
 503   // build the filter_elements sql code
 504     $query_filter_elements = "";
 505     if (!empty($filter_elements)) {
 506         foreach ($filter_elements as $key => $element) {
 507             $query_filter_elements .= " AND codes." . add_escape_custom($key) . "=" . "'" . add_escape_custom($element)  . "' ";
 508         }
 509     }
 510
 511     if ($form_code_type == 'PROD') { // Search for products/drugs
 512         if ($count) {
 513             $query = "SELECT count(dt.drug_id) as count ";
 514         } else {
 515             $query = "SELECT dt.drug_id, dt.selector, d.name ";
 516         }
 517
 518          $query .= "FROM drug_templates AS dt, drugs AS d WHERE " .
 519                  "( d.name LIKE ? OR " .
 520                  "dt.selector LIKE ? ) " .
 521                  "AND d.drug_id = dt.drug_id " .
 522                  "ORDER BY d.name, dt.selector, dt.drug_id $limit_query";
 523         $res = sqlStatement($query, array("%" . $search_term . "%", "%" . $search_term . "%"));
 524     } else { // Start a codes search
 525         // We are looking up the external table id here.  An "unset" value gets treated as 0(zero) without this test.  This way we can differentiate between "unset" and explicitly zero.
 526         $table_id = isset($code_types[$form_code_type]['external']) ? intval(($code_types[$form_code_type]['external'])) : -9999 ;
 527         if ($table_id >= 0) { // We found a definition for the given code search, so start building the query
 528         // Place the common columns variable here since all check codes table
 529             $common_columns = " codes.id, codes.code_type, codes.modifier, codes.units, codes.fee, " .
 530                             "codes.superbill, codes.related_code, codes.taxrates, codes.cyp_factor, " .
 531                             "codes.active, codes.reportable, codes.financial_reporting, codes.revenue_code, ";
 532             $columns = $common_columns . "'" . add_escape_custom($form_code_type) . "' as code_type_name ";
 533
 534             $active_query = '';
 535             if ($active) {
 536                 // Only filter for active codes.  Only the active column in the joined table
 537                 // is affected by this parameter.  Any filtering as a result of "active" status
 538                 // in the external table itself is always applied. I am implementing the behavior
 539                 // just as was done prior to the refactor
 540                 // - Kevin Yeh
 541                 // If there is no entry in codes sql table, then default to active
 542                 //  (this is reason for including NULL below)
 543                 if ($table_id == 0) {
 544                     // Search from default codes table
 545                     $active_query = " AND codes.active = 1 ";
 546                 } else {
 547                     // Search from external tables
 548                     $active_query = " AND (codes.active = 1 || codes.active IS NULL) ";
 549                 }
 550             }
 551
 552             // Get/set the basic metadata information
 553             $table_info = $code_external_tables[$table_id];
 554             $table = $table_info[EXT_TABLE_NAME];
 555             $table_dot = $table . ".";
 556             $code_col = $table_info[EXT_COL_CODE];
 557             $code_text_col = $table_info[EXT_COL_DESCRIPTION];
 558             $code_text_short_col = $table_info[EXT_COL_DESCRIPTION_BRIEF];
 559             if ($table_id == 0) {
 560                 $table_info[EXT_FILTER_CLAUSES] = array("code_type=" . $code_types[$form_code_type]['id']); // Add a filter for the code type
 561             }
 562
 563             $code_external = $code_types[$form_code_type]['external'];
 564
 565             // If the description is supposed to come from "joined" table instead of the "main",
 566             // the metadata defines a DISPLAY_DESCRIPTION element, and we use that to build up the query
 567             if ($table_info[DISPLAY_DESCRIPTION] != "") {
 568                 $display_description = $table_info[DISPLAY_DESCRIPTION];
 569                 $display_description_brief = $table_info[DISPLAY_DESCRIPTION];
 570             } else {
 571                 $display_description = $table_dot . $code_text_col;
 572                 $display_description_brief = $table_dot . $code_text_short_col;
 573             }
 574
 575             // Ensure the external table exists
 576             $check_table = sqlQuery("SHOW TABLES LIKE '" . $table . "'");
 577             if ((empty($check_table))) {
 578                 HelpfulDie("Missing table in code set search:" . $table);
 579             }
 580
 581             $sql_bind_array = array();
 582             if ($count) {
 583                 // only collecting a count
 584                 $query = "SELECT count(" . $table_dot . $code_col . ") as count ";
 585             } else {
 586                 $substitute = '';
 587                 if ($table_dot === 'valueset.') {
 588                     $substitute = 'valueset.code_type as valueset_code_type, ';
 589                 }
 590                 $query = "SELECT '" . $code_external . "' as code_external, " .
 591                     $table_dot . $code_col . " as code, " .
 592                     $display_description . " as code_text, " .
 593                     $display_description_brief . " as code_text_short, " .
 594                     $substitute . $columns . " ";
 595             }
 596
 597             if ($table_id == 0) {
 598                 // Search from default codes table
 599                 $query .= " FROM " . $table . " ";
 600             } else {
 601                 // Search from external tables
 602                 $query .= " FROM " . $table .
 603                           " LEFT OUTER JOIN `codes` " .
 604                           " ON " . $table_dot . $code_col . " = codes.code AND codes.code_type = ? ";
 605                 $sql_bind_array[] = $code_types[$form_code_type]['id'];
 606             }
 607
 608             foreach ($table_info[EXT_JOINS] as $join_info) {
 609                 $join_table = $join_info[JOIN_TABLE];
 610                 $check_table = sqlQuery("SHOW TABLES LIKE '" . $join_table . "'");
 611                 if ((empty($check_table))) {
 612                     HelpfulDie("Missing join table in code set search:" . $join_table);
 613                 }
 614
 615                 $query .= " INNER JOIN " . $join_table;
 616                 $query .= " ON ";
 617                 $not_first = false;
 618                 foreach ($join_info[JOIN_FIELDS] as $field) {
 619                     if ($not_first) {
 620                         $query .= " AND ";
 621                     }
 622
 623                     $query .= $field;
 624                     $not_first = true;
 625                 }
 626             }
 627
 628         // Setup the where clause based on MODE
 629             $query .= " WHERE ";
 630             if ($return_only_one) {
 631                 $query .= $table_dot . $code_col . " = ? ";
 632                 $sql_bind_array[] = $search_term;
 633             } elseif ($mode == "code") {
 634                 $query .= $table_dot . $code_col . " like ? ";
 635                 $sql_bind_array[] = $search_term . "%";
 636             } elseif ($mode == "description") {
 637                 $description_keywords = preg_split("/ /", $search_term, -1, PREG_SPLIT_NO_EMPTY);
 638                 $query .= "(1=1 ";
 639                 foreach ($description_keywords as $keyword) {
 640                     $query .= " AND " . $table_dot . $code_text_col . " LIKE ? ";
 641                     $sql_bind_array[] = "%" . $keyword . "%";
 642                 }
 643
 644                 $query .= ")";
 645             } else { // $mode == "default"
 646                   $query .= "(" . $table_dot . $code_text_col . " LIKE ? OR " . $table_dot . $code_col . " LIKE ?) ";
 647                   array_push($sql_bind_array, "%" . $search_term . "%", "%" . $search_term . "%");
 648             }
 649
 650         // Done setting up the where clause by mode
 651
 652           // Add the metadata related filter clauses
 653             foreach ($table_info[EXT_FILTER_CLAUSES] as $filter_clause) {
 654                 $query .= " AND ";
 655                 $dot_location = strpos($filter_clause, ".");
 656                 if ($dot_location !== false) {
 657                   // The filter clause already includes a table specifier, so don't add one
 658                     $query .= $filter_clause;
 659                 } else {
 660                     $query .= $table_dot . $filter_clause;
 661                 }
 662             }
 663
 664             $query .= $active_query . $query_filter_elements;
 665
 666             $query .= " ORDER BY " . $table_dot . $code_col . "+0," . $table_dot . $code_col;
 667
 668             if ($return_query) {
 669                 // Just returning the actual query without the LIMIT information in it. This
 670                 // information can then be used to combine queries of different code types
 671                 // via the mysql UNION command. Returning an array to contain the query string
 672                 // and the binding parameters.
 673                 return array('query' => $query,'binds' => $sql_bind_array);
 674             }
 675
 676             $query .= $limit_query;
 677
 678             $res = sqlStatement($query, $sql_bind_array);
 679         } else {
 680             HelpfulDie("Code type not active or not defined:" . $join_info[JOIN_TABLE]);
 681         }
 682     } // End specific code type search
 683
 684     if (isset($res)) {
 685         if ($count) {
 686             // just return the count
 687             $ret = sqlFetchArray($res);
 688             return $ret['count'];
 689         }
 690         // return the data
 691         return $res;
 692     }
 693 }
 694
 695 /**
 696  * Lookup Code Descriptions for one or more billing codes.
 697  *
 698  * Function is able to lookup code descriptions from a variety of code sets. See the 'external'
 699  * items in the comments at top of this page for a listing of the code sets supported.
 700  *
 701  * @param  string $codes  Is of the form "type:code;type:code; etc.".
 702  * @param  string $desc_detail Can choose either the normal description('code_text') or the brief description('code_text_short').
 703  * @return string         Is of the form "description;description; etc.".
 704  */
 705 function lookup_code_descriptions($codes, $desc_detail = "code_text")
 706 {
 707     global $code_types, $code_external_tables;
 708
 709   // ensure $desc_detail is set properly
 710     if (($desc_detail != "code_text") && ($desc_detail != "code_text_short")) {
 711         $desc_detail = "code_text";
 712     }
 713
 714     $code_text = '';
 715     if (!empty($codes)) {
 716         $relcodes = explode(';', $codes);
 717         foreach ($relcodes as $codestring) {
 718             if ($codestring === '') {
 719                 continue;
 720             }
 721
 722             // added $modifier for HCPCS and other internal codesets so can grab exact entry in codes table
 723             $code_parts = explode(':', $codestring);
 724             $codetype = $code_parts[0] ?? null;
 725             $code = $code_parts[1] ?? null;
 726             $modifier = $code_parts[2] ?? null;
 727             // if we don't have the code types we can't do much here
 728             if (!isset($code_types[$codetype])) {
 729                 // we can't do much so we will just continue here...
 730                 continue;
 731             }
 732
 733             $table_id = $code_types[$codetype]['external'] ?? '';
 734             if (!isset($code_external_tables[$table_id])) {
 735                 //using an external code that is not yet supported, so skip.
 736                 continue;
 737             }
 738
 739             $table_info = $code_external_tables[$table_id];
 740             $table_name = $table_info[EXT_TABLE_NAME];
 741             $code_col = $table_info[EXT_COL_CODE];
 742             $desc_col = $table_info[DISPLAY_DESCRIPTION] == "" ? $table_info[EXT_COL_DESCRIPTION] : $table_info[DISPLAY_DESCRIPTION];
 743             $desc_col_short = $table_info[DISPLAY_DESCRIPTION] == "" ? $table_info[EXT_COL_DESCRIPTION_BRIEF] : $table_info[DISPLAY_DESCRIPTION];
 744             $sqlArray = array();
 745             $sql = "SELECT " . $desc_col . " as code_text," . $desc_col_short . " as code_text_short FROM " . $table_name;
 746
 747             // include the "JOINS" so that we get the preferred term instead of the FullySpecifiedName when appropriate.
 748             foreach ($table_info[EXT_JOINS] as $join_info) {
 749                 $join_table = $join_info[JOIN_TABLE];
 750                 $check_table = sqlQuery("SHOW TABLES LIKE '" . $join_table . "'");
 751                 if ((empty($check_table))) {
 752                     HelpfulDie("Missing join table in code set search:" . $join_table);
 753                 }
 754
 755                 $sql .= " INNER JOIN " . $join_table;
 756                 $sql .= " ON ";
 757                 $not_first = false;
 758                 foreach ($join_info[JOIN_FIELDS] as $field) {
 759                     if ($not_first) {
 760                         $sql .= " AND ";
 761                     }
 762
 763                     $sql .= $field;
 764                     $not_first = true;
 765                 }
 766             }
 767
 768             $sql .= " WHERE ";
 769
 770
 771             // Start building up the WHERE clause
 772
 773             // When using the external codes table, we have to filter by the code_type.  (All the other tables only contain one type)
 774             if ($table_id == 0) {
 775                 $sql .= " code_type = '" . add_escape_custom($code_types[$codetype]['id']) . "' AND ";
 776             }
 777
 778             // Specify the code in the query.
 779             $sql .= $table_name . "." . $code_col . "=? ";
 780             $sqlArray[] = $code;
 781
 782             // Add the modifier if necessary for CPT and HCPCS which differentiates code
 783             if ($modifier) {
 784                 $sql .= " AND modifier = ? ";
 785                 $sqlArray[] = $modifier;
 786             }
 787
 788             // We need to include the filter clauses
 789             // For SNOMED and SNOMED-CT this ensures that we get the Preferred Term or the Fully Specified Term as appropriate
 790             // It also prevents returning "inactive" results
 791             foreach ($table_info[EXT_FILTER_CLAUSES] as $filter_clause) {
 792                 $sql .= " AND " . $filter_clause;
 793             }
 794
 795             // END building the WHERE CLAUSE
 796
 797
 798             if ($table_info[EXT_VERSION_ORDER]) {
 799                 $sql .= " ORDER BY " . $table_info[EXT_VERSION_ORDER];
 800             }
 801
 802             $sql .= " LIMIT 1";
 803             $crow = sqlQuery($sql, $sqlArray);
 804             if (!empty($crow[$desc_detail])) {
 805                 if ($code_text) {
 806                     $code_text .= '; ';
 807                 }
 808
 809                 $code_text .= $crow[$desc_detail];
 810             }
 811         }
 812     }
 813
 814     return $code_text;
 815 }
 816
 817 /**
 818 * Sequential code set "internal" searching function
 819 *
 820 * Function is basically a wrapper of the code_set_search() function to support
 821 * a optimized searching models. The default mode will:
 822 * Searches codes first; then if no hits, it will then search the descriptions
 823 * (which are separated by each word in the code_set_search() function).
 824 * (This function is not meant to be called directly)
 825 *
 826 * @param string $form_code_type code set key (special keyword is PROD) (Note --ALL-- has been deprecated and should be run through the multiple_code_set_search() function instead)
 827 * @param string $search_term search term
 828 * @param integer $limit Number of results to return (NULL means return all)
 829 * @param array $modes Holds the search modes to process along with the order of processing (default behavior is described in above function comment)
 830 * @param boolean $count if true, then will only return the number of entries
 831 * @param boolean $active if true, then will only return active entries
 832 * @param integer $start Query start limit (for pagination)
 833 * @param integer $number Query number returned (for pagination)
 834 * @param array $filter_elements Array that contains elements to filter
 835 * @param string $is_hit_mode This is a mode that simply returns the name of the mode if results were found
 836 * @return mixed recordset/integer/string
 837 */
 838 function sequential_code_set_search($form_code_type, $search_term, $limit = null, $modes = null, $count = false, $active = true, $start = null, $number = null, $filter_elements = array(), $is_hit_mode = false)
 839 {
 840   // Set the default behavior that is described in above function comments
 841     if (empty($modes)) {
 842         $modes = array('code','description');
 843     }
 844
 845   // Return the Search Results (loop through each mode in order)
 846     foreach ($modes as $mode) {
 847         $res = code_set_search($form_code_type, $search_term, $count, $active, false, $start, $number, $filter_elements, $limit, $mode);
 848         if (($count && $res > 0) || (!$count && sqlNumRows($res) > 0)) {
 849             if ($is_hit_mode) {
 850                 // just return the mode
 851                 return $mode;
 852             } else {
 853                 // returns the count number if count is true or returns the data if count is false
 854                 return $res;
 855             }
 856         }
 857     }
 858 }
 859
 860 /**
 861 * Code set searching "internal" function for when searching multiple code sets.
 862 *
 863 * It will also work for one code set search, although not meant for this.
 864 * (This function is not meant to be called directly)
 865 *
 866 * @param array $form_code_types code set keys (will default to checking all active code types if blank)
 867 * @param string $search_term search term
 868 * @param integer $limit Number of results to return (NULL means return all)
 869 * @param array $modes Holds the search modes to process along with the order of processing (default behavior is described in above function comment)
 870 * @param boolean $count if true, then will only return the number of entries
 871 * @param boolean $active if true, then will only return active entries
 872 * @param integer $start Query start limit (for pagination)
 873 * @param integer $number Query number returned (for pagination)
 874 * @param array $filter_elements Array that contains elements to filter
 875 * @return mixed recordset/integer
 876 */
 877 function multiple_code_set_search(array $form_code_types = null, $search_term, $limit = null, $modes = null, $count = false, $active = true, $start = null, $number = null, $filter_elements = array())
 878 {
 879
 880     if (empty($form_code_types)) {
 881         // Collect the active code types
 882         $form_code_types = collect_codetypes("active", "array");
 883     }
 884
 885     if ($count) {
 886         //start the counter
 887         $counter = 0;
 888     } else {
 889         // Figure out the appropriate limit clause
 890         $limit_query = limit_query_string($limit, $start, $number);
 891
 892         // Prepare the sql bind array
 893         $sql_bind_array = array();
 894
 895         // Start the query string
 896         $query = "SELECT * FROM ((";
 897     }
 898
 899   // Loop through each code type
 900     $flag_first = true;
 901     $flag_hit = false; //ensure there is a hit to avoid trying an empty query
 902     foreach ($form_code_types as $form_code_type) {
 903         // see if there is a hit
 904         $mode_hit = null;
 905         // only use the count method here, since it's much more efficient than doing the actual query
 906         $mode_hit = sequential_code_set_search($form_code_type, $search_term, null, $modes, true, $active, null, null, $filter_elements, true);
 907         if ($mode_hit) {
 908             if ($count) {
 909                 // count the hits
 910                 $count_hits = code_set_search($form_code_type, $search_term, $count, $active, false, null, null, $filter_elements, null, $mode_hit);
 911                 // increment the counter
 912                 $counter += $count_hits;
 913             } else {
 914                 $flag_hit = true;
 915                 // build the query
 916                 $return_query = code_set_search($form_code_type, $search_term, $count, $active, false, null, null, $filter_elements, null, $mode_hit, true);
 917                 if (!empty($sql_bind_array)) {
 918                     $sql_bind_array = array_merge($sql_bind_array, $return_query['binds']);
 919                 } else {
 920                     $sql_bind_array = $return_query['binds'];
 921                 }
 922
 923                 if (!$flag_first) {
 924                     $query .= ") UNION ALL (";
 925                 }
 926
 927                 $query .= $return_query['query'];
 928             }
 929
 930             $flag_first = false;
 931         }
 932     }
 933
 934     if ($count) {
 935         //return the count
 936         return $counter;
 937     } else {
 938         // Finish the query string
 939         $query .= ")) as atari $limit_query";
 940
 941         // Process and return the query (if there was a hit)
 942         if ($flag_hit) {
 943             return sqlStatement($query, $sql_bind_array);
 944         }
 945     }
 946 }
 947
 948 /**
 949 * Returns the limit to be used in the sql query for code set searches.
 950 *
 951 * @param  integer  $limit            Number of results to return (NULL means return all)
 952 * @param  integer  $start            Query start limit (for pagination)
 953 * @param  integer  $number           Query number returned (for pagination)
 954 * @param  boolean  $return_only_one  if true, then will only return one perfect matching item
 955 * @return mixed recordset/integer
 956 */
 957 function limit_query_string($limit = null, $start = null, $number = null, $return_only_one = false)
 958 {
 959     if (!is_null($start) && !is_null($number)) {
 960         // For pagination of results
 961         $limit_query = " LIMIT " . escape_limit($start) . ", " . escape_limit($number) . " ";
 962     } elseif (!is_null($limit)) {
 963         $limit_query = " LIMIT " . escape_limit($limit) . " ";
 964     } else {
 965         // No pagination and no limit
 966         $limit_query = '';
 967     }
 968
 969     if ($return_only_one) {
 970          // Only return one result (this is where only matching for exact code match)
 971          // Note this overrides the above limit settings
 972          $limit_query = " LIMIT 1 ";
 973     }
 974
 975     return $limit_query;
 976 }
 977
 978 // Recursive function to look up the IPPF2 (or other type) code, if any,
 979 // for a given related code field.
 980 //
 981 function recursive_related_code($related_code, $typewanted = 'IPPF2', $depth = 0)
 982 {
 983     global $code_types;
 984     // echo "<!-- related_code = '$related_code' depth = '$depth' -->\n"; // debugging
 985     if (++$depth > 4 || empty($related_code)) {
 986         return false; // protects against relation loops
 987     }
 988     $relcodes = explode(';', $related_code);
 989     foreach ($relcodes as $codestring) {
 990         if ($codestring === '') {
 991             continue;
 992         }
 993         list($codetype, $code) = explode(':', $codestring);
 994         if ($codetype === $typewanted) {
 995             // echo "<!-- returning '$code' -->\n"; // debugging
 996             return $code;
 997         }
 998         $row = sqlQuery(
 999             "SELECT related_code FROM codes WHERE " .
1000             "code_type = ? AND code = ? AND active = 1 " .
1001             "ORDER BY id LIMIT 1",
1002             array($code_types[$codetype]['id'], $code)
1003         );
1004         $tmp = recursive_related_code($row['related_code'], $typewanted, $depth);
1005         if ($tmp !== false) {
1006             return $tmp;
1007         }
1008     }
1009     return false;
1010 }