AHA Coding Clinic® for ICD-9 - 2011 Issue 4; VOLUMES 1 & 2 NEW/REVISED CODES

Nonspecific Reaction to Test for Tuberculosis

Effective October 1, 2011, code 795.5, Nonspecific reaction to tuberculin skin test without active tuberculosis, has been expanded to distinguish between nonspecific reaction to tuberculin skin test without active tuberculosis (795.51), and nonspecific reaction to cell mediated immunity measurement of gamma interferon antigen response without active tuberculosis (795.52). Before 2001, the tuberculin skin test was the only available immunologic test for Mycobacterium tuberculosis infection approved for use in the United States. Interferon gamma release assays (IGRAs) are now approved as an aid to diagnosing Mycobacterium tuberculosis infection. Prior to this coding change, ICD-9-CM was only able...

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