ICD-10 Code A56.8 – Sexually transmitted chlamydial infection of other sites (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code A56.8 – Sexually transmitted chlamydial infection of other sites
What it is
A56.8 identifies sexually transmitted chlamydial infection at sites other than the usual genital, rectal, or pharyngeal locations. Use it when documentation specifies another involved site and chlamydial cause is confirmed or clearly stated.
Clinical signs
Clinical features vary; refer to documentation. Findings may reflect localized infection at the named site, with inflammation, discharge, pain, or irritation depending on the affected area.
When to use this code
Use this code when the provider documents chlamydial infection transmitted sexually and identifies an other site as the location. It fits cases where the record supports chlamydia but does not describe a standard genital, rectal, or throat site. If the note is unclear, check documentation before coding.
Do not use for
Do not use A56.8 for chlamydial infections of the genitourinary tract, rectum, or pharynx. Also avoid it when the record only says “possible” chlamydia or gives no site-specific documentation.
Coding tip
Code the exact documented site whenever possible, and use A56.8 only when the infection is clearly sexually transmitted and the site falls outside the usual categories.