ICD-10-CM 2027
ICD-10 code for viral dysentery
From the official ICD-10-CM alphabetic index entry “Dysentery, dysenteric (catarrhal) (diarrhea) (epidemic) (hemorrhagic) (infectious) (sporadic) (tropical) › viral”. Page updated September 29, 2026.
About coding viral dysentery
The ICD-10-CM code for viral dysentery is A08.4 (Viral intestinal infection, unspecified).
Within A08, choose A08.4 (Viral intestinal infection, unspecified) only when documentation doesn't support a more specific option: Rotaviral enteritis (A08.0), acute gastroenteropathy due to Norwalk agent and other small round viruses (A08.1), adenoviral enteritis (A08.2), other viral enteritis (A08.3) and other specified intestinal infections (A08.8).
It is not a CC or MCC, so as a secondary diagnosis it doesn't change the MS-DRG severity level.
In MS-DRG v44.0, it is part of the grouping logic for DRG 391 (Esophagitis, Gastroenteritis and Miscellaneous Digestive Disorders with MCC, relative weight 1.2392) and DRG 392 (Esophagitis, Gastroenteritis and Miscellaneous Digestive Disorders without MCC, relative weight 0.7645), in MDC 06 (Diseases and Disorders of the Digestive System), as a principal or secondary diagnosis. The DRG a claim lands in depends on the principal diagnosis, procedures and any CC/MCC secondary diagnoses.
Common questions about viral dysentery ICD-10 codes
What is the ICD-10 code for viral dysentery?
- A08.4 — Viral intestinal infection, unspecified.
Is A08.4 billable?
- Yes. A08.4 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can A08.4 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict A08.4 as a principal diagnosis.
Is A08.4 a CC or MCC?
- No. A08.4 is neither a CC nor an MCC under MS-DRG v44.0.