ICD-10 Code A56.09 – Other chlamydial infection of lower genitourinary tract (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code A56.09 – Other chlamydial infection of lower genitourinary tract
What it is
This code identifies a chlamydial infection affecting the lower genitourinary tract that is not otherwise specified. Use it when documentation shows chlamydial disease in this area, but the record does not name a more specific site.
Clinical signs
Clinical features vary; refer to documentation. Commonly reported findings may include urethral or cervical inflammation, dysuria, discharge, or pelvic discomfort, but the diagnosis should be supported by provider assessment or testing.
When to use this code
Use A56.09 when the clinician documents an “other” chlamydial infection of the lower genitourinary tract and no more specific chlamydial code applies. It is appropriate when the site is lower genitourinary but not clearly urethral, cervical, or another defined category. Check documentation if the record is vague.
Do not use for
Do not use this code for chlamydial infections with a more specific documented site or for non-chlamydial genitourinary infections. If the note does not clearly support chlamydia, check documentation before coding.
Coding tip
Code the most specific documented chlamydial site first; use A56.09 only when the lower genitourinary infection is otherwise unspecified.