A56.1Chlamydial infection of pelviperitoneum and other genitourinary organs

A56.1 is the ICD-10-CM diagnosis code for chlamydial infection of pelviperitoneum and other genitourinary organs. It belongs to category A56 (other sexually transmitted chlamydial diseases), block A50-A64 (infections with a predominantly sexual mode of transmission) and chapter 1 (certain infectious and parasitic diseases). It is a header code, so it can't be reported by itself; one of its 2 subcodes must be used instead.

Within A56, choose A56.1 (Chlamydial infection of pelviperitoneum and other genitourinary organs) only when documentation doesn't support a more specific option: chlamydial infection of lower genitourinary tract (A56.0), chlamydial infection of genitourinary tract, unspecified (A56.2), chlamydial infection of anus and rectum (A56.3), chlamydial infection of pharynx (A56.4) and sexually transmitted chlamydial infection of other sites (A56.8).

To report this condition, pick the subcode that matches the documentation: A56.11 (disease) and A56.19 (infection).

It has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.