A56.00 ICD-10-CM Code: Chlamydial infection of lower genitourinary tract, unspecified

A56.00 is the ICD-10-CM diagnosis code for chlamydial infection of lower genitourinary tract, unspecified. A bacterial infection caused by Chlamydia trachomatis affecting the lower genital and urinary organs, such as the urethra, bladder, or reproductive structures. This code is used when the specific site of infection is not documented or identified. A56.00 sits in the ICD-10-CM chapter for certain infectious and parasitic diseases (a00-b99), within the section covering infections with a predominantly sexual mode of transmission (a50-a64).

A56.00 is a billable ICD-10-CM code but does not map to a payment HCC under the CMS-HCC V28, V24, ESRD, or RxHCC risk adjustment models. It can be reported on Medicare Advantage encounter data submissions but it does not contribute to a beneficiary's RAF score and therefore does not affect risk-adjusted payments to the plan.

Query the provider if documentation specifies the exact site (urethra, cervix, prostate, etc.) as more specific codes (A56.01-A56.09) may be more appropriate and provide better clinical detail.