T36.1Poisoning by, adverse effect of and underdosing of cephalosporins and other beta-lactam antibiotics

T36.1 is the ICD-10-CM diagnosis code for poisoning by, adverse effect of and underdosing of cephalosporins and other beta-lactam antibiotics. It belongs to category T36 (poisoning by, adverse effect of and underdosing of systemic antibiotics), block T36-T50 (poisoning by, adverse effects of and underdosing of drugs, medicaments and biological substances) and chapter 19 (injury, poisoning and certain other consequences of external causes). It is a header code, so it can't be reported by itself; one of its 1 subcodes must be used instead.

Within T36, choose T36.1 (cephalosporins and other beta-lactam antibiotics) only when documentation doesn't support a more specific option: penicillins (T36.0), chloramphenicol group (T36.2), macrolides (T36.3), tetracyclines (T36.4), aminoglycosides (T36.5), rifampicins (T36.6), antifungal antibiotics, systemically used (T36.7), other systemic antibiotics (T36.8) and 2 more.

Codes in this range require a 7th character: A for initial encounter, D for subsequent encounter and S for sequela. Use placeholder "X" characters to fill any empty positions before the 7th character.

It has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.