ICD-10-CM > R00-R99 > R70-R79 > R76 > R76.1 R76.1 Nonspecific reaction to test for tuberculosis Non-Billable/Non-Specific Codes R76.11Nonspecific reaction to tuberculin skin test without active tuberculosisR76.12Nonspecific reaction to cell mediated immunity measurement of gamma interferon antigen response without active tuberculosis