ICD-10 Code A56.11 – Chlamydial Female Pelvic Inflammatory Disease (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code A56.11 – Chlamydial female pelvic inflammatory disease
What it is
This code identifies pelvic inflammatory disease in a female patient when chlamydia is documented as the cause. It represents an ascending genital tract infection involving the uterus, fallopian tubes, or adjacent pelvic structures.
Clinical signs
Common findings include lower abdominal or pelvic pain, cervical motion tenderness, abnormal vaginal discharge, and pain with pelvic examination. Clinical features vary; refer to documentation.
When to use this code
Use A56.11 when the clinician clearly documents chlamydial pelvic inflammatory disease, chlamydial salpingitis, or related PID attributed to Chlamydia trachomatis. Code it when the record supports a female PID diagnosis with chlamydial cause stated. Check documentation if the organism is not specified.
Do not use for
Do not use this code for pelvic inflammatory disease without a documented chlamydial cause. It is also not appropriate for male chlamydial infections or nonspecific lower genital tract infections.
Coding tip
Assign the code only when the provider links PID to chlamydia; otherwise, query or use the documented diagnosis.