Convert ICD-10 Code T40.1X4A to ICD-9

Source ICD-10 Code		Target ICD-9 Code
T40.1X4A Poisoning by heroin, undetermined, initial encounter		965.01 Poisoning-heroin
Combination Flag - Multiple codes are needed to describe the source diagnosis code. Correct coding should be done based on contextual judgment.
T40.1X4A Poisoning by heroin, undetermined, initial encounter		E980.0 Undeterm pois-analgesics
Combination Flag - Multiple codes are needed to describe the source diagnosis code. Correct coding should be done based on contextual judgment.

ICD-10 to ICD-9 crosswalk for code T40.1X4A - poisoning by heroin, undetermined, initial encounter based on the most recent General Equivalence Mappings (GEMS) information.