Convert ICD-10 Code T65.821A to ICD-9

Source ICD-10 Code		Target ICD-9 Code
T65.821A Toxic effect of harmful algae and algae toxins, acc, init		989.89 Tox eff nonmed subst NEC
Combination Flag - Multiple codes are needed to describe the source diagnosis code. Correct coding should be done based on contextual judgment.
T65.821A Toxic effect of harmful algae and algae toxins, acc, init		E928.6 Envir expose algae/toxin
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 T65.821A - toxic effect of harmful algae and algae toxins, accidental (unintentional), initial encounter based on the most recent General Equivalence Mappings (GEMS) information.