Convert ICD-10 Code D84.9 to ICD-9

Source ICD-10 Code		Target ICD-9 Code
D84.9 Immunodeficiency, unspecified		279.3 Immunity deficiency NOS
Approximate Flag - The approximate mapping means there is not an exact match between the ICD-10 and ICD-9 codes and the mapped code is not a precise representation of the original code.

ICD-10 to ICD-9 crosswalk for code D84.9 - immunodeficiency, unspecified based on the most recent General Equivalence Mappings (GEMS) information.