ICD-10 Code B37.9 – Candidiasis, unspecified (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code B37.9 – Candidiasis, unspecified
What it is
B37.9 identifies candidiasis when the site or type is not specified. Use this code for Candida infection when the record does not document a more precise location.
Clinical signs
Clinical features vary; refer to documentation. Candida infections may present with mucosal irritation, white plaques, itching, or redness, depending on the affected site.
When to use this code
Use B37.9 when the provider documents candidiasis but does not identify oral, vulvovaginal, skin, or another specific form. It also fits when the note confirms Candida infection but the location is unclear. If the record supports a more specific candidiasis code, you should code that instead.
Do not use for
Do not use this code for a clearly documented site-specific candidiasis or for Candida colonization without infection. Check documentation if the note describes a different fungal condition.
Coding tip
Query for the affected site before defaulting to B37.9.