B33.24 Viral cardiomyopathy

Billable ICD-10-CM code, FY2026.

Applies from B33.2 Viral carditis

Applicable to

• Coxsackie (virus) carditis

Risk adjustment (HCC)

• CMS-HCC V28: HCC 227 — Cardiomyopathy/Myocarditis
• CMS-HCC V22: HCC 85 — Congestive Heart Failure
• RxHCC V08: HCC 186 — Heart Failure
• ESRD V24: HCC 85

MS-DRG index

Defines the logic of DRG(s) 314-316 in MDC 05.

Approximate ICD-9-CM (GEMs)

• 078.89 Other specified diseases due to viruses (approximate)

Code annotations containing back-references to B33.24

Back-references to B33.24

• Type 1 Excludes: I43 Cardiomyopathy in diseases classified elsewhere ("coxsackie (virus) (B33.24)")
• Code Also: M35.81 Multisystem inflammatory syndrome ("viral cardiomyopathy (B33.24)")

Back-references to B33

• Code First: H67 Otitis media in diseases classified elsewhere ("viral disease NEC (B00-B34)")

Diagnosis Index entries for B33.24

• Cardiomyopathy (familial) (idiopathic) › viral

Nearby codes

• B33.2 Viral carditis
• B33.20 Viral carditis, unspecified
• B33.21 Viral endocarditis
• B33.22 Viral myocarditis
• B33.23 Viral pericarditis
• B33.24 Viral cardiomyopathy (this code)
• B33.3 Retrovirus infections, not elsewhere classified
• B33.4 Hantavirus (cardio)-pulmonary syndrome [HPS] [HCPS]
• B33.8 Other specified viral diseases