Convert ICD-10 Code T40.991S to ICD-9

Source ICD-10 Code		Target ICD-9 Code
T40.991S Poisoning by oth psychodyslept, accidental, sequela		909.0 Late eff drug poisoning
Combination Flag - Multiple codes are needed to describe the source diagnosis code. Correct coding should be done based on contextual judgment.
T40.991S Poisoning by oth psychodyslept, accidental, sequela		E929.2 Late eff acc poisoning
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 T40.991S - poisoning by other psychodysleptics [hallucinogens], accidental (unintentional), sequela based on the most recent General Equivalence Mappings (GEMS) information.