ICD-10-CM 2027 diagnosis code
T40.716Underdosing of cannabis
T40.716 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 last changed in FY2022 (effective October 1, 2021). Source: official FY2027 ICD-10-CM release from CDC/NCHS and CMS. Page updated September 29, 2026. About our data
About T40.716
T40.716 is the ICD-10-CM diagnosis code for underdosing of cannabis. It belongs to category T40 (poisoning by, adverse effect of and underdosing of narcotics and psychodysleptics [hallucinogens]), 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 T40.71 (poisoning by, adverse effect of and underdosing of cannabis (derivatives)), T40.716 is specifically for underdosing of cannabis. Related codes cover poisoning by cannabis, accidental (unintentional) (T40.711), poisoning by cannabis, intentional self-harm (T40.712), poisoning by cannabis, assault (T40.713), poisoning by cannabis, undetermined (T40.714) and adverse effect of cannabis (T40.715).
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 was added in FY2022, effective October 1, 2021.
7th character
The appropriate 7th character is to be added to each code from category T40
Notes that apply from higher levels
Instructions written at a parent level also apply to T40.716.
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
- Afghanistan black — Underdosing
- Bhang+C394 — Underdosing
- Cannabinol — Underdosing
- Cannabis (derivatives) — Underdosing
- Central nervous system › depressants › cannabis sativa — Underdosing
- Dronabinol — Underdosing
- Ganja — Underdosing
- Hashish — Underdosing
- Indian › hemp — Underdosing
- Lebanese red — Underdosing
- Marihuana — Underdosing
- Marijuana — Underdosing
- Nabilone — Underdosing
- Pot — Underdosing
- Tetrahydrocannabinol — Underdosing
- THC — Underdosing
Code history
- 2016
- 2017
- 2018
- 2019
- 2020
- 2021
- 2022
- 2023
- 2024
- 2025
- 2026
- 2027
- FY2022 (effective 10/1/2021): Added
- No changes since FY2022.
Common questions about T40.716
Is T40.716 billable?
- No. T40.716 is a header code. Report one of its more specific subcodes instead.