ICD-10-CM 2027
ICD-10 code for hepatitis C
Confirmed by the official ICD-10-CM index entry “carrier (suspected) of › hepatitis (viral) › c”. Page updated September 29, 2026.
About coding hepatitis C
The ICD-10-CM code for hepatitis C is B18.2 (Chronic viral hepatitis C). The official index lists 2 more specific codes, so check the documentation for details such as type, cause, site or severity before settling on B18.2.
It is also searched as hep C.
Within B18 (chronic viral hepatitis), B18.2 is specifically for chronic viral hepatitis C. Related codes cover B with delta-agent (B18.0), B without delta-agent (B18.1), other chronic viral hepatitis (B18.8) and unspecified (B18.9).
Use an additional code, if applicable, for ascites (R18.8).
It is not a CC or MCC, so as a secondary diagnosis it doesn't change the MS-DRG severity level.
Related Hepatitis C codes
Common questions about hepatitis C ICD-10 codes
What is the ICD-10 code for hepatitis C?
- B18.2 — Chronic viral hepatitis C. More specific codes apply when the documentation supports them: B17.10, B17.11.
What is the ICD-10 code for acute hepatitis c without hepatic coma?
- B17.10 — Acute hepatitis C without hepatic coma.
What is the ICD-10 code for acute hepatitis c with hepatic coma?
- B17.11 — Acute hepatitis C with hepatic coma.
Is B18.2 billable?
- Yes. B18.2 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can B18.2 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict B18.2 as a principal diagnosis.
Is B18.2 a CC or MCC?
- No. B18.2 is neither a CC nor an MCC under MS-DRG v44.0.