B33.22 Viral myocarditis

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

Applies from B33.2 Viral carditis

Applicable to

• Coxsackie (virus) carditis

MS-DRG index

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

Approximate ICD-9-CM (GEMs)

• 074.23 Coxsackie myocarditis (approximate)

Code annotations containing back-references to B33.22

Back-references to B33.22

• Type 1 Excludes: I41 Myocarditis in diseases classified elsewhere ("coxsackie (virus) infection (B33.22)")

Back-references to B33

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

Diagnosis Index entries for B33.22

• Coxsackie (virus) (infection) › myocarditis
• Myocarditis (with arteriosclerosis)(chronic)(fibroid) (interstitial) (old) (progressive) (senile) › aseptic of newborn
• Myocarditis (with arteriosclerosis)(chronic)(fibroid) (interstitial) (old) (progressive) (senile) › Coxsackie (virus)
• Myocarditis (with arteriosclerosis)(chronic)(fibroid) (interstitial) (old) (progressive) (senile) › epidemic of newborn (Coxsackie)
• Myocarditis (with arteriosclerosis)(chronic)(fibroid) (interstitial) (old) (progressive) (senile) › virus, viral
• Myocarditis (with arteriosclerosis)(chronic)(fibroid) (interstitial) (old) (progressive) (senile) › virus, viral › of newborn (Coxsackie)

Nearby codes

• B33.0 Epidemic myalgia
• B33.1 Ross River disease
• B33.2 Viral carditis
• B33.20 Viral carditis, unspecified
• B33.21 Viral endocarditis
• B33.22 Viral myocarditis (this code)
• B33.23 Viral pericarditis
• B33.24 Viral cardiomyopathy
• B33.3 Retrovirus infections, not elsewhere classified
• B33.4 Hantavirus (cardio)-pulmonary syndrome [HPS] [HCPS]
• B33.8 Other specified viral diseases