B19.21 Unspecified viral hepatitis C with hepatic coma

Billable ICD-10-CM code, FY2026. Acts as a Major Complication or Comorbidity (MCC) as a secondary diagnosis.

Risk adjustment (HCC)

• RxHCC V08: HCC 55 — Acute or Unspecified Viral Hepatitis C

MS-DRG index

Defines the logic of DRG(s) 441-443 in MDC 07.

Approximate ICD-9-CM (GEMs)

• 070.71 Unspecified viral hepatitis C with hepatic coma

Code annotations containing back-references to B19.21

Back-references to B19

• Code First: H67 Otitis media in diseases classified elsewhere ("viral disease NEC (B00-B34)")
• Type 2 Excludes: K72 Hepatic failure, not elsewhere classified ("viral hepatitis with hepatic coma (B15-B19)")
• Type 1 Excludes: K73 Chronic hepatitis, not elsewhere classified ("viral hepatitis (chronic) (B15-B19)")
• Code Also: K74 Fibrosis and cirrhosis of liver (", if applicable, viral hepatitis (acute) (chronic) (B15-B19)")
• Type 1 Excludes: K75.2 Nonspecific reactive hepatitis ("viral hepatitis (B15-B19)")
• Type 1 Excludes: K75.3 Granulomatous hepatitis, not elsewhere classified ("viral hepatitis (B15-B19)")
• Type 1 Excludes: K75.9 Inflammatory liver disease, unspecified ("viral hepatitis (B15-B19)")
• Code First: M02 Postinfective and reactive arthropathies ("viral hepatitis (B15-B19)")
• Type 2 Excludes: T80.6 Other serum reactions ("serum hepatitis (B16-B19)")

Diagnosis Index entries for B19.21

• Hepatitis › C (viral) › with hepatic coma
• Hepatitis › viral, virus › type › C › with hepatic coma

Nearby codes

• B19.1 Unspecified viral hepatitis B
• B19.10 Unspecified viral hepatitis B without hepatic coma
• B19.11 Unspecified viral hepatitis B with hepatic coma
• B19.2 Unspecified viral hepatitis C
• B19.20 Unspecified viral hepatitis C without hepatic coma
• B19.21 Unspecified viral hepatitis C with hepatic coma (this code)
• B19.9 Unspecified viral hepatitis without hepatic coma