Convert ICD-10 Code T50.Z91A to ICD-9

Source ICD-10 Code		Target ICD-9 Code
T50.Z91A Poisoning by oth vaccines and biolg substances, acc, 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.Z91A Poisoning by oth vaccines and biolg substances, acc, init		E858.1 Acc poisn-systemic agent
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.Z91A - poisoning by other vaccines and biological substances, accidental (unintentional), initial encounter based on the most recent General Equivalence Mappings (GEMS) information.