ICD-10 Code A56.02 – Chlamydial vulvovaginitis (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code A56.02 – Chlamydial vulvovaginitis
What it is
A56.02 identifies vulvovaginal infection caused by Chlamydia trachomatis. Use it when the provider documents chlamydial inflammation involving the vulva and vagina.
Clinical signs
Clinical features may include vaginal discharge, irritation, dysuria, or pelvic discomfort. Clinical features vary; refer to documentation.
When to use this code
Use this code when the record clearly states chlamydial vulvovaginitis or a chlamydial infection of the vulva and vagina. It fits confirmed diagnoses in outpatient, inpatient, or problem-list documentation. If the note only says vaginitis without a chlamydial cause, check documentation.
Do not use for
Do not use A56.02 for nonspecific vaginitis, bacterial vaginosis, or other sexually transmitted infections without chlamydia documented. If the anatomic site or organism is unclear, check documentation.
Coding tip
Code the organism and site together only when both are documented; otherwise verify the diagnosis wording before assigning A56.02.