Convert ICD-10 Code T50.994A to ICD-9

Source ICD-10 Code		Target ICD-9 Code
T50.994A Poisoning by oth drug/meds/biol subst, undetermined, init		979.9 Pois-vaccine/biolog NEC
Combination Flag - Multiple codes are needed to describe the source diagnosis code. Correct coding should be done based on contextual judgment.
T50.994A Poisoning by oth drug/meds/biol subst, undetermined, init		E980.4 Undet pois-med agnt NEC
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 T50.994A - poisoning by other drugs, medicaments and biological substances, undetermined, initial encounter based on the most recent General Equivalence Mappings (GEMS) information.