B46.0 Pulmonary mucormycosis

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

Risk adjustment (HCC)

• CMS-HCC V28: HCC 6 — Opportunistic Infections
• CMS-HCC V22: HCC 6 — Opportunistic Infections
• RxHCC V08: HCC 5 — Opportunistic Infections
• ESRD V24: HCC 6

MS-DRG index

Defines the logic of DRG(s) 791 in MDC 15.

Approximate ICD-9-CM (GEMs)

• 117.7 Zygomycosis [Phycomycosis or Mucormycosis] (approximate)

Code annotations containing back-references to B46.0

Back-references to B46

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

Diagnosis Index entries for B46.0

• Mucormycosis › pulmonary

Nearby codes

• B46 Zygomycosis
• B46.0 Pulmonary mucormycosis (this code)
• B46.1 Rhinocerebral mucormycosis
• B46.2 Gastrointestinal mucormycosis
• B46.3 Cutaneous mucormycosis
• B46.4 Disseminated mucormycosis
• B46.5 Mucormycosis, unspecified