B40.0 Acute pulmonary blastomycosis

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

Applies from B40 Blastomycosis

Excludes1 (never code together)

• Brazilian blastomycosis (B41.-)
• keloidal blastomycosis (B48.0)

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) 791 in MDC 15.

Approximate ICD-9-CM (GEMs)

• 116.0 Blastomycosis (approximate)

Code annotations containing back-references to B40.0

Back-references to B40.0

• Type 1 Excludes: J99 Respiratory disorders in diseases classified elsewhere ("blastomycosis (B40.0-B40.2)")

Back-references to B40

• Code First: M01 Direct infections of joint in infectious and parasitic diseases classified elsewhere ("mycoses (B35-B49)")

Diagnosis Index entries for B40.0

• Blastomycosis, blastomycotic › primary pulmonary
• Blastomycosis, blastomycotic › pulmonary › acute

Nearby codes

• B40 Blastomycosis
• B40.0 Acute pulmonary blastomycosis (this code)
• B40.1 Chronic pulmonary blastomycosis
• B40.2 Pulmonary blastomycosis, unspecified
• B40.3 Cutaneous blastomycosis
• B40.7 Disseminated blastomycosis
• B40.8 Other forms of blastomycosis