Table 2 ICD-10-CA code definitions and language describing the change in coding directive
ICD-10-CA Code | Definition and notes in ICD-10-CA [26] |
|---|---|
A08.0 | Rotaviral enteritis |
A08.3 | Other viral gastroenteritis |
A08.4 | Viral intestinal infection, unspecified Includes: viral enteritis not otherwise specified (NOS), viral gastroenteritis NOS, and viral gastroenteropathy NOS) |
A08.5 | Other specified intestinal infections |
A09 | Other gastroenteritis and colitis of infectious and unspecified origin Excludes: due to bacterial, protozoal, viral and other specified infectious agents (A00-A08) and noninfective (see noninfectious) diarrhoea (K52.9) |
K52.9 | Noninfective gastroenteritis and colitis, unspecified Includes: diarrhea, enteritis, ileitis, jejunitis, and sigmoiditis if specified as noninfectious Excludes: colitis, diarrhoea, enteritis, gastroenteritis if coded as infectious (A09.0) or of unspecified origin (A09.9); functional diarrhoea (K59.1); neonatal diarrhoea (noninfective) (P78.3); psychogenic diarrhoea (F45.3) |
Description of coding directive as described within the 2009 Canadian Coding Standards [27] | |
|---|---|
Change | Rationale |
“Deleted the directive: “Assume gastroenteritis to be noninfectious unless documented as infectious by the responsible physician”” “Added an introductory sentence: “most cases of gastroenteritis are infectious, even in industrialized countries, thus ICD-10-CA version 2009 classifies gastroenteritis NOS as infectious (A09.9 Gastroenteritis and colitis of unspecified origin)”” | “To align with the change for v2009 ICD-10-CA. The code K52.9 Noninfective gastroenteritis and colitis, unspecified is assigned when specified as noninfectious” |