ICD-10 Code B45.9 – Cryptococcosis, unspecified (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code B45.9 – Cryptococcosis, unspecified
What it is
B45.9 identifies cryptococcosis when the record confirms infection but does not specify the site or form. Use it for documented cryptococcal disease without a more precise subtype.
Clinical signs
Clinical features vary; refer to documentation. Cryptococcosis may present with pulmonary findings, neurologic symptoms, or disseminated infection, but you should code only what is explicitly documented.
When to use this code
Use B45.9 when the clinician documents cryptococcosis and does not identify a specific manifestation, such as meningitis, pneumonia, or skin involvement. It also fits when the chart confirms cryptococcal infection but the site remains unspecified. If a more detailed diagnosis appears elsewhere in the record, code that instead.
Do not use for
Do not use this code for a specified cryptococcal condition, such as cryptococcal meningitis or pulmonary cryptococcosis. Do not use it when documentation is unclear; check documentation.
Coding tip
Query the provider if the note mentions cryptococcosis but omits the affected site, because a more specific code may be available.