Nonspecific reaction to skin test w/o active tuberculosis

This code signifies a positive tuberculin skin test (TST), also known as a PPD test, in a patient who does not show clinical or radiographic evidence of active tuberculosis disease. It indicates exposure to Mycobacterium tuberculosis or a prior BCG vaccination, but not an active infection requiring treatment.

Assign this code when a patient presents with a positive TST result, and subsequent evaluation (e.g., chest X-ray, symptom review) rules out active tuberculosis. This is often seen in screening programs, occupational health evaluations, or follow-up for potential TB exposure. Documentation should clearly state a positive TST and the absence of active TB.

• Do not use this code if active tuberculosis is diagnosed; instead, code the specific type of active TB.
• Distinguish carefully between a positive TST and a positive IGRA (interferon-gamma release assay) result; R76.12 is for nonspecific IGRA reactions.
• This code is typically a secondary diagnosis, often following a Z-code for screening or exposure.