ICD-10-CM 2027 diagnosis code
T36.4X2Poisoning by tetracyclines, intentional self-harm
T36.4X2 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.
Code unchanged since ICD-10-CM took effect on October 1, 2015. Source: official FY2027 ICD-10-CM release from CDC/NCHS and CMS. Page updated September 29, 2026. About our data
About T36.4X2
T36.4X2 is the ICD-10-CM diagnosis code for poisoning by tetracyclines, intentional self-harm. 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 T36.4X (poisoning by, adverse effect of and underdosing of tetracyclines), T36.4X2 is specifically for poisoning by tetracyclines, intentional self-harm. Related codes cover poisoning by tetracyclines, accidental (unintentional) (T36.4X1), poisoning by tetracyclines, assault (T36.4X3), poisoning by tetracyclines, undetermined (T36.4X4), adverse effect of tetracyclines (T36.4X5) and underdosing of tetracyclines (T36.4X6).
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 T36.4X2.
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
- Achromycin — Poisoning Intentional self-harm
- Antibiotic NEC › tetracycline (group) — Poisoning Intentional self-harm
- Aureomycin — Poisoning Intentional self-harm
- Chlormethylenecycline — Poisoning Intentional self-harm
- Chlortetracycline — Poisoning Intentional self-harm
- Clomocycline — Poisoning Intentional self-harm
- Declomycin — Poisoning Intentional self-harm
- Demeclocycline — Poisoning Intentional self-harm
- Demethylchlortetracycline — Poisoning Intentional self-harm
- Demethyltetracycline — Poisoning Intentional self-harm
- DMCT — Poisoning Intentional self-harm
- Doxycycline — Poisoning Intentional self-harm
- Guamecycline — Poisoning Intentional self-harm
- Lymecycline — Poisoning Intentional self-harm
- Meclocycline — Poisoning Intentional self-harm
- Metacycline — Poisoning Intentional self-harm
- Methacycline — Poisoning Intentional self-harm
- Minocycline — Poisoning Intentional self-harm
- Oxytetracycline — Poisoning Intentional self-harm
- Penimepicycline — Poisoning Intentional self-harm
- Polycycline — Poisoning Intentional self-harm
- Rolitetracycline — Poisoning Intentional self-harm
- Terramycin — Poisoning Intentional self-harm
- Tetracycline — Poisoning Intentional self-harm
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 T36.4X2
Is T36.4X2 billable?
- No. T36.4X2 is a header code. Report one of its more specific subcodes instead.