ICD-10 Code B35.5 – Tinea imbricata (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code B35.5 – Tinea imbricata
What it is
B35.5 identifies tinea imbricata, a chronic superficial fungal infection of the skin. It is caused by dermatophytes and produces a characteristic layered or ringed rash.
Clinical signs
Clinical features vary; refer to documentation. Typical findings include concentric, overlapping scaly plaques with itching or mild inflammation, often on the trunk and limbs.
When to use this code
Use B35.5 when the provider documents tinea imbricata by name or clearly describes the classic patterned dermatophyte rash. It also fits confirmed cases where the diagnosis is established clinically or by testing. If the note only says “fungal rash,” check documentation for the specific organism or diagnosis.
Do not use for
Do not use this code for nonspecific dermatitis, eczema, or other non-dermatophyte skin infections. If the diagnosis is another type of tinea, select the more specific code instead.
Coding tip
Code the documented fungal diagnosis exactly; if the rash pattern is described without naming tinea imbricata, verify the provider’s final assessment.