Convert ICD-10 Code F11.90 to ICD-9

Source ICD-10 Code		Target ICD-9 Code
F11.90 Opioid use, unspecified, uncomplicated		305.50 Opioid abuse-unspec
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 F11.90 - opioid use, unspecified, uncomplicated based on the most recent General Equivalence Mappings (GEMS) information.