21991-5

LOINC code 21991-5 identifies "Age and Site and Morphology override flag Cancer case". Some computer edits identify errors. Others indicate possible errors that require manual review for resolution. To eliminate the need to review the same cases repeatedly, over-ride flags have been developed to indicate that data in a record (or records) have been reviewed and, while unusual, are correct. This over-ride is used with the following edits in the NAACCR Metafile of the EDITS software: Age, Primary Site, Morphology (SEER IF15) Age, Primary Site, Morph ICDO3 --Adult (SEER) Age, Primary Site, Morph ICDO3--Pediatric (NPCR) Some edits check for code combinations that are possible, but quite rare. If the code combination generates an error message and review of the case indicates that the codes are correct for the case, then the over-ride flag is used to skip the edit in the future. See Chapter IV, Recommended Data Edits and Software Coordination of Standards. Over-ride Flag as Used in the EDITS Software Package Some cancers occur almost exclusively in certain age groups. Edits of the type Age, Primary Site, Morphology require review if a site/morphology combination occurs in an age group for which it is extremely rare. The edit Age, Primary Site, Morph ICDO3--Adult (SEER) edits cases with an Age at Diagnosis of 15 and older. The edit Age, Primary Site, Morph ICDO3--Pediatric (NPCR) edits cases with an Age at Diagnosis of less than 15. The ICD-O-2 version of the edit is Age, Primary Site, Morphology (SEER IF15) and contains logic for all ages. Instructions for Coding Leave blank if the program does not generate an error message for the edit Age, Primary Site, Morphology, the edit Age, Primary Site, Morph ICDO3--Adult, or the edit Age, Primary Site, Morph ICDO3--Pediatric. Leave blank and correct any errors for the case if an item is discovered to be incorrect. Code 1 as indicated if review of items in the error or warning message confirms that all are correct... NAACCR Data Standards and Data Dictionary Version 11

This code measures Age&site&morphology override flag in Cancer case.XXX. It belongs to the TUMRRGT class in the LOINC classification.

LOINC (Logical Observation Identifiers Names and Codes) is a universal standard for identifying laboratory and clinical observations. It is maintained by the Regenstrief Institute and used worldwide for health data exchange.