A15.9 ICD-10-CM Code: Respiratory tuberculosis unspecified

A15.9 is the ICD-10-CM diagnosis code for respiratory tuberculosis unspecified. This code describes tuberculosis that affects the lungs or respiratory system, but the specific type or location within the respiratory tract has not been clearly documented. It is used when a patient has confirmed TB of the lungs without more detailed information about which part is affected. A15.9 sits in the ICD-10-CM chapter for certain infectious and parasitic diseases (a00-b99), within the section covering tuberculosis (a15-a19).

A15.9 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.

Use this code only when the documentation confirms respiratory TB but lacks specificity; if more detail is available (such as TB of the lung, bronchus, or trachea), use a more specific code from the A15 category.