B37.1 Pulmonary candidiasis

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

Applicable to

• Candidal bronchitis
• Candidal pneumonia

Applies from B37 Candidiasis

Includes

• candidosis
• moniliasis

Excludes1 (never code together)

• neonatal candidiasis (P37.5)

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) 177-179 in MDC 04.

Approximate ICD-9-CM (GEMs)

• 112.4 Candidiasis of lung (approximate)

Code annotations containing back-references to B37.1

Back-references to B37.1

• Type 1 Excludes: J17 Pneumonia in diseases classified elsewhere ("candidial pneumonia (B37.1)")
• Type 1 Excludes: J99 Respiratory disorders in diseases classified elsewhere ("candidiasis (B37.1)")

Back-references to B37

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

Diagnosis Index entries for B37.1

• Bronchomycosis NOS › candidal
• Candidiasis, candidal › bronchitis
• Candidiasis, candidal › lung
• Candidiasis, candidal › pneumonia
• Candidiasis, candidal › pulmonary
• Pneumonia (acute) (double) (migratory) (purulent) (septic) (unresolved) › Candida
• Pneumonia (acute) (double) (migratory) (purulent) (septic) (unresolved) › in (due to) › candidiasis

Nearby codes

• B37 Candidiasis
• B37.0 Candidal stomatitis
• B37.1 Pulmonary candidiasis (this code)
• B37.2 Candidiasis of skin and nail
• B37.3 Candidiasis of vulva and vagina
• B37.31 Acute candidiasis of vulva and vagina
• B37.32 Chronic candidiasis of vulva and vagina
• B37.4 Candidiasis of other urogenital sites