Convert ICD-10 Code T50.904A to ICD-9

Source ICD-10 Code		Target ICD-9 Code
T50.904A Poisoning by unsp drug/meds/biol subst, undetermined, init		977.9 Poison-medicinal agt NOS
Combination Flag - Multiple codes are needed to describe the source diagnosis code. Correct coding should be done based on contextual judgment.
T50.904A Poisoning by unsp drug/meds/biol subst, undetermined, init		E980.5 Undet pois-med agnt NOS
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 T50.904A - poisoning by unspecified drugs, medicaments and biological substances, undetermined, initial encounter based on the most recent General Equivalence Mappings (GEMS) information.