ICD-10-CM 2027 diagnosis code

T59.92Toxic effect of unspecified gases, fumes and vapors, intentional self-harm

Not billable — use a more specific codeRequires 7th character

T59.92 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: Toxic effect of unsp gases, fumes and vapors, self-harm

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 T59.92

T59.92 is the ICD-10-CM diagnosis code for toxic effect of unspecified gases, fumes and vapors, intentional self-harm. It belongs to category T59 (toxic effect of other gases, fumes and vapors), block T51-T65 (toxic effects of substances chiefly nonmedicinal as to source) 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 T59.9 (toxic effect of unspecified gases, fumes and vapors), T59.92 is specifically for toxic effect of unspecified gases, fumes and vapors, intentional self-harm. Related codes cover accidental (unintentional) (T59.91), assault (T59.93) and undetermined (T59.94).

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 T59

Ainitial encounterT59.92XA
Dsubsequent encounterT59.92XD
SsequelaT59.92XS

Notes that apply from higher levels

Instructions written at a parent level also apply to T59.92.

› From T59 Toxic effect of other gases, fumes and vapors

Includes

aerosol propellants

Excludes1

chlorofluorocarbons (T53.5)

Broader instructions also apply from T51-T65 Toxic effects of substances chiefly nonmedicinal as to source and Chapter 19: Injury, poisoning and certain other consequences of external causes.

Table of Drugs & Neoplasms entries

Fumes (from) — Poisoning Intentional self-harm
Gas NEC — Poisoning Intentional self-harm
Gas NEC › air contaminants, source or type not specified — Poisoning Intentional self-harm
Gas NEC › nerve, not in war — Poisoning Intentional self-harm
Gas NEC › sewer — Poisoning Intentional self-harm
Gas NEC › specified source NEC — Poisoning Intentional self-harm
Lung irritant (gas) NEC — Poisoning Intentional self-harm
Mustard (emetic) › gas, not in war — Poisoning Intentional self-harm
Nerve gas, not in war — Poisoning Intentional self-harm
Sewer gas — Poisoning Intentional self-harm
Vapor — 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 T59.92

Is T59.92 billable?: No. T59.92 is a header code. Report one of its more specific subcodes instead.