A18.83 ICD-10-CM Code: Tuberculosis of digestive tract organs, not elsewhere classified

A18.83 is the ICD-10-CM diagnosis code for tuberculosis of digestive tract organs, not elsewhere classified. This code describes tuberculosis infection that affects organs of the digestive system (such as the stomach, intestines, or other digestive organs) and doesn't fit into other more specific tuberculosis categories. It represents an active TB infection in the digestive tract rather than the more common lung tuberculosis. A18.83 sits in the ICD-10-CM chapter for certain infectious and parasitic diseases (a00-b99), within the section covering tuberculosis (a15-a19).

A18.83 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.

Verify the specific digestive organ affected in the clinical documentation; if a more specific site is documented (like TB of intestines or peritonitis), consider using a more specific code if available.