A18.53 ICD-10-CM Code: Tuberculous chorioretinitis

A18.53 is the ICD-10-CM diagnosis code for tuberculous chorioretinitis. This is an infection of the eye caused by tuberculosis bacteria that affects the choroid and retina (the light-sensitive layers at the back of the eye). It can cause vision problems and inflammation if left untreated. A18.53 sits in the ICD-10-CM chapter for certain infectious and parasitic diseases (a00-b99), within the section covering tuberculosis (a15-a19).

A18.53 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.

This code requires confirmation of tuberculosis infection affecting the eye; ensure documentation specifies tuberculous etiology rather than other causes of chorioretinitis.