Convert ICD-10 Code G44.85 to ICD-9

Source ICD-10 Code		Target ICD-9 Code
G44.85 Primary stabbing headache		339.85 Prim stabbing headache

ICD-10 to ICD-9 crosswalk for code G44.85 - primary stabbing headache based on the most recent General Equivalence Mappings (GEMS) information.