B39.0 Acute pulmonary histoplasmosis capsulati

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

Applies from B39 Histoplasmosis

Code first

• associated AIDS (B20)

Use additional code

• code for any associated manifestations, such as:
• endocarditis (I39)
• meningitis (G02)
• pericarditis (I32)
• retinitis (H32)

Risk adjustment (HCC)

• CMS-HCC V22: HCC 115 — Pneumococcal Pneumonia, Empyema, Lung Abscess
• ESRD V24: HCC 115

MS-DRG index

Defines the logic of DRG(s) 177-179 in MDC 04.

Approximate ICD-9-CM (GEMs)

• 115.05 Infection by Histoplasma capsulatum, pneumonia (approximate)

Code annotations containing back-references to B39.0

Back-references to B39.0

• Type 1 Excludes: J17 Pneumonia in diseases classified elsewhere ("histoplasmosis pneumonia (B39.0-B39.2)")
• Type 1 Excludes: J99 Respiratory disorders in diseases classified elsewhere ("histoplasmosis (B39.0-B39.2)")

Back-references to B39

• Code First: H32 Chorioretinal disorders in diseases classified elsewhere ("histoplasmosis (B39.-)")
• Code First: M01 Direct infections of joint in infectious and parasitic diseases classified elsewhere ("mycoses (B35-B49)")

Diagnosis Index entries for B39.0

• Histoplasmosis › capsulati › pulmonary › acute
• Pneumonia (acute) (double) (migratory) (purulent) (septic) (unresolved) › in (due to) › histoplasmosis › acute

Nearby codes

• B39 Histoplasmosis
• B39.0 Acute pulmonary histoplasmosis capsulati (this code)
• B39.1 Chronic pulmonary histoplasmosis capsulati
• B39.2 Pulmonary histoplasmosis capsulati, unspecified
• B39.3 Disseminated histoplasmosis capsulati
• B39.4 Histoplasmosis capsulati, unspecified
• B39.5 Histoplasmosis duboisii