ICD-10 Code A74.8 – Other chlamydial diseases (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code A74.8 – Other chlamydial diseases
What it is
A74.8 identifies chlamydial infections that do not fit a more specific ICD-10 category. Use it when documentation states an other chlamydial disease and the site or type is not otherwise classified.
Clinical signs
Clinical features vary; refer to documentation. Chlamydial disease may present with site-specific inflammation or discharge, but you should not infer the diagnosis without a documented chlamydial infection.
When to use this code
Use A74.8 when the provider documents a chlamydial condition that is not covered by a more specific code in the A74 category. It is appropriate for confirmed cases labeled as other chlamydial disease, especially when the exact anatomic site is not specified. If the record names a different chlamydial diagnosis, code that more specific condition instead.
Do not use for
Do not use this code for unspecified chlamydial infection when the documentation does not support “other” chlamydial disease. Do not assign it when a more specific chlamydial code is documented.
Coding tip
Check the provider’s exact wording and code the most specific documented chlamydial diagnosis available.