ICD-10-CM 2027 diagnosis code
T36.1X5Adverse effect of cephalosporins and other beta-lactam antibiotics
T36.1X5 is a header code, so it can't be reported by itself. Choose one of the 3 more specific codes beneath it and add the required 7th character.Short description: Adverse effect of cephalospor/oth beta-lactm antibiotics
Source: official FY2027 ICD-10-CM release from CDC/NCHS and CMS, effective October 1, 2026. Updated September 29, 2026. About our data
About T36.1X5
T36.1X5 is the ICD-10-CM diagnosis code for adverse effect 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 3 subcodes must be used instead.
Within T36.1X, choose T36.1X5 (Adverse effect of cephalosporins and other beta-lactam antibiotics) only when documentation doesn't support a more specific option: poisoning by cephalosporins and other beta-lactam antibiotics, accidental (unintentional) (T36.1X1), poisoning by cephalosporins and other beta-lactam antibiotics, intentional self-harm (T36.1X2), poisoning by cephalosporins and other beta-lactam antibiotics, assault (T36.1X3), poisoning by cephalosporins and other beta-lactam antibiotics, undetermined (T36.1X4) and underdosing of cephalosporins and other beta-lactam antibiotics (T36.1X6).
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.
7th character
The appropriate 7th character is to be added to each code from category T36
Notes that apply from higher levels
Instructions written at a parent level also apply to T36.1X5.
Broader instructions also apply from 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.
Table of Drugs & Neoplasms entries
- Antibiotic NEC › cephalosporin (group) — Adverse effect
- Antibiotic NEC › b-lactam NEC — Adverse effect
- Aztreonam — Adverse effect
- Cefacetrile — Adverse effect
- Cefaclor — Adverse effect
- Cefadroxil — Adverse effect
- Cefalexin — Adverse effect
- Cefaloglycin — Adverse effect
- Cefaloridine — Adverse effect
- Cefalosporins — Adverse effect
- Cefalotin — Adverse effect
- Cefamandole — Adverse effect
- Cefamycin antibiotic — Adverse effect
- Cefapirin — Adverse effect
- Cefatrizine — Adverse effect
- Cefazedone — Adverse effect
- Cefazolin — Adverse effect
- Cefbuperazone — Adverse effect
- Cefetamet — Adverse effect
- Cefixime — Adverse effect
- Cefmenoxime — Adverse effect
- Cefmetazole — Adverse effect
- Cefminox — Adverse effect
- Cefonicid — Adverse effect
- Cefoperazone — Adverse effect
- Ceforanide — Adverse effect
- Cefotaxime — Adverse effect
- Cefotetan — Adverse effect
- Cefotiam — Adverse effect
- Cefoxitin — Adverse effect
Code history
- 2016
- 2017
- 2018
- 2019
- 2020
- 2021
- 2022
- 2023
- 2024
- 2025
- 2026
- 2027
- FY2016 (effective 10/1/2015): Added (first year of ICD-10-CM)
- No changes since FY2016.
Common questions about T36.1X5
Is T36.1X5 billable?
- No. T36.1X5 is a header code. Report one of its more specific subcodes instead.