B39.9 Histoplasmosis, unspecified

Billable ICD-10-CM code, FY2026.

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)

MS-DRG index

Defines the logic of DRG(s) 867-869 in MDC 18.

Approximate ICD-9-CM (GEMs)

• 115.90 Histoplasmosis, unspecified, without mention of manifestation (approximate)

Code annotations containing back-references to B39.9

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 B39.9

• Chorioretinitis › histoplasmic
• Chorioretinitis › in (due to) › histoplasmosis
• Histoplasmosis

Nearby codes

• 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
• B39.9 Histoplasmosis, unspecified (this code)