A18.09 ICD-10-CM Code: Other musculoskeletal tuberculosis

A18.09 is the ICD-10-CM diagnosis code for other musculoskeletal tuberculosis. This code describes tuberculosis infection that affects the bones, joints, or muscles in areas of the body other than the spine. It represents a serious infection caused by the tuberculosis bacterium spreading to musculoskeletal tissues. A18.09 sits in the ICD-10-CM chapter for certain infectious and parasitic diseases (a00-b99), within the section covering tuberculosis (a15-a19).

A18.09 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 site of musculoskeletal involvement (e.g., hip, knee, ribs) in the documentation, as more specific codes may be available for certain locations.