A56
A56: Other sexually transmitted chlamydial diseases
Non-billable headerICD-10-CM
A56 is a non-billable header ICD-10-CM code for other sexually transmitted chlamydial diseases. It cannot be billed on its own: choose one of the more specific child codes below.
Excludes1: never code together
These conditions cannot occur together. Billing both on the same encounter is a denial.
Excludes2: not included here, but may coexist
The excluded condition is not part of this code, but a patient can have both. You may code both.
Includes
Conditions this code covers.
- sexually transmitted diseases due to Chlamydia
- trachomatis
Other codes that can never be billed with A56
Their own Excludes1 notes name this code, so the conflict is not listed above.
Risk adjustment
No CMS-HCC V28 category: this code does not change a RAF score.
Code history
Unchanged in every release from FY2024 to FY2027.
Code to one of these instead A56
6 child codes. Green means billable.
- A56.0Chlamydial infection of lower genitourinary tract
- A56.1Chlamydial infection of pelviperitoneum and other genitourinary organs
- A56.2Chlamydial infection of genitourinary tract, unspecified
- A56.3Chlamydial infection of anus and rectum
- A56.4Chlamydial infection of pharynx
- A56.8Sexually transmitted chlamydial infection of other sites