[Answered]: When is the code from categories T36-T50, Poisonings…

When is the code from categories T36-T50, Poisonings by, adverse effects of, and underdosing of drugs, medicaments and biological substances, used as the first listed or as a principal diagnosis? Code from T36-T50 with the fifth or sixth character of 5 for adverse effects is listed first Code from T36-T50 with the sixth character of 6 for underdosing of drugs is listed first Code from T36-T50 with the fifth or sixth character for the associated intent of poisonings is listed first Any of the codes from T36-T50 can be listed first based on the circumstances of the encounter