ICD-10 Code A56.1 – Chlamydial infection of pelviperitoneum and other genitourinary organs (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code A56.1 – Chlamydial infection of pelviperitoneum and other genitourinary organs
What it is
This code identifies chlamydial infection involving the pelviperitoneum or other genitourinary organs. It is used when Chlamydia trachomatis affects these internal pelvic or urinary structures.
Clinical signs
Clinical features vary; refer to documentation. Findings may include pelvic pain, lower abdominal tenderness, or signs of genitourinary inflammation consistent with a documented chlamydial infection.
When to use this code
Use this code when the provider documents chlamydial infection of the pelviperitoneum or another genitourinary organ. It applies when the diagnosis is specific to these internal sites, not just a general chlamydial infection.
Code it from the clinician’s stated diagnosis, imaging, operative note, or other supporting documentation. Check documentation if the record only mentions pelvic inflammatory disease or a nonspecific genital chlamydial infection.
Do not use for
Do not use this code for uncomplicated chlamydial infection of the lower genital tract or for infections without a documented internal genitourinary site. Check documentation.
Coding tip
Assign A56.1 only when the anatomic site is clearly documented; otherwise, query for specificity.