Nonspec reaction to gamma intrfrn respns w/o actv tubrclosis

This code indicates an abnormal or indeterminate result from an interferon-gamma release assay (IGRA), such as a Quantiferon-TB Gold or T-Spot.TB test, in a patient who does not have active tuberculosis. It signifies a positive or equivocal immune response to Mycobacterium tuberculosis antigens, suggesting latent infection or prior exposure, but without clinical evidence of active disease.

Use this code when an IGRA test returns a positive or indeterminate result, and the provider explicitly documents that there is no active tuberculosis. This typically occurs during screening for latent TB infection in high-risk individuals, such as healthcare workers, immunocompromised patients, or contacts of active TB cases, when subsequent workup rules out active disease.

• Ensure documentation clearly states "no active tuberculosis" to differentiate from active disease codes.
• Do not use this code if the patient has a positive tuberculin skin test (TST) but a negative IGRA; use R76.11 in that scenario.
• This code is for the result of the test, not the performance of the test itself.