ICD-10 Code B02.7 – Disseminated zoster (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code B02.7 – Disseminated zoster
What it is
B02.7 identifies disseminated zoster, a widespread form of herpes zoster affecting more than one dermatome or extending beyond the initial rash area. Use this code when documentation clearly states dissemination.
Clinical signs
Clinical features vary; refer to documentation. Typical findings include a generalized vesicular rash, lesions beyond a single dermatome, and possible systemic illness in more severe cases.
When to use this code
Use B02.7 when the provider documents disseminated shingles, generalized zoster, or zoster spread beyond a localized dermatomal pattern. It may also apply when the record describes multi-dermatomal involvement or widespread eruption consistent with dissemination. Check documentation if the extent is unclear.
Do not use for
Do not use this code for localized herpes zoster confined to one dermatome or for a history of shingles without active disease. If the record only says “zoster” without dissemination, verify the site and extent before coding.
Coding tip
Code B02.7 only when dissemination is explicitly documented or clearly supported by the record.