Tuberculosis of other sites

This code signifies tuberculosis affecting anatomical sites other than those specifically classified elsewhere in the A18 category, such as the nervous system, bones, joints, genitourinary system, or lymph nodes. It represents extrapulmonary tuberculosis that does not have a more specific ICD-10-CM code.

Use this code when documentation confirms a diagnosis of tuberculosis in an "other specified" location, such as the adrenal glands, thyroid, or pericardium, for which a more precise A18 subcategory does not exist. Supporting documentation should clearly identify the affected organ or site and confirm the tuberculous etiology.

• Always strive for the most specific ICD-10-CM code available for the documented site of tuberculosis.
• Ensure the medical record explicitly states the affected "other site" to justify using this less specific code.
• Do not use this code for pulmonary tuberculosis (A15-A16) or for sites with dedicated A18 subcategories (e.g., A18.0-A18.81).