B58.81 Toxoplasma myocarditis

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

Applies from B58 Toxoplasmosis

Includes

• infection due to Toxoplasma gondii

Excludes1 (never code together)

• congenital toxoplasmosis (P37.1)

MS-DRG index

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

Approximate ICD-9-CM (GEMs)

• 130.3 Myocarditis due to toxoplasmosis

Code annotations containing back-references to B58.81

Back-references to B58.81

• Type 1 Excludes: I41 Myocarditis in diseases classified elsewhere ("toxoplasmosis (B58.81)")

Back-references to B58

• Type 2 Excludes: J82 Pulmonary eosinophilia, not elsewhere classified ("pulmonary eosinophilia due to specified parasitic infection (B50-B83)")

Diagnosis Index entries for B58.81

• Myocarditis (with arteriosclerosis)(chronic)(fibroid) (interstitial) (old) (progressive) (senile) › in (due to) › toxoplasmosis (acquired)

Nearby codes

• B58.09 Other toxoplasma oculopathy
• B58.1 Toxoplasma hepatitis
• B58.2 Toxoplasma meningoencephalitis
• B58.3 Pulmonary toxoplasmosis
• B58.8 Toxoplasmosis with other organ involvement
• B58.81 Toxoplasma myocarditis (this code)
• B58.82 Toxoplasma myositis
• B58.83 Toxoplasma tubulo-interstitial nephropathy
• B58.89 Toxoplasmosis with other organ involvement
• B58.9 Toxoplasmosis, unspecified