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ICD-10-CM 2027 diagnosis code

F18.1Inhalant abuse

Not billable — use a more specific code

F18.1 is a header code, so it can't be reported by itself. Choose one of the 8 more specific codes beneath it.

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 F18.1

F18.1 is the ICD-10-CM diagnosis code for Inhalant abuse. It belongs to category F18 (Inhalant related disorders), block F10-F19 (mental and behavioral disorders due to psychoactive substance use) and chapter 5 (mental, Behavioral and Neurodevelopmental disorders). It is a header code, so it can't be reported by itself; one of its 8 subcodes must be used instead.

Within F18 (Inhalant related disorders), F18.1 is specifically for Inhalant abuse. Related codes cover dependence (F18.2) and use, unspecified (F18.9).

To report this condition, pick the subcode that matches the documentation: F18.10 (uncomplicated), F18.11 (in remission), F18.12 (with intoxication), F18.14 (with inhalant-induced mood disorder), F18.15 (with inhalant-induced psychotic disorder), F18.17 (with inhalant-induced dementia), F18.18 (with other inhalant-induced disorders) and F18.19 (with unspecified inhalant-induced disorder).

Don't report F18.1 together with the conditions in its Excludes1 note: inhalant dependence (F18.2-) and inhalant use, unspecified (F18.9-).

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

Specific codes under F18.1

Coding notes

Excludes1Not coded here — never report together with this code
  • inhalant dependence (F18.2-)
  • inhalant use, unspecified (F18.9-)

Notes that apply from higher levels

Instructions written at a parent level also apply to F18.1.

› From F18 Inhalant related disorders
Includes
  • volatile solvents

Broader instructions also apply from Chapter 5: Mental, Behavioral and Neurodevelopmental disorders.

Codes whose notes reference F18.1

Code history

  1. 2016
  2. 2017
  3. 2018
  4. 2019
  5. 2020
  6. 2021
  7. 2022
  8. 2023
  9. 2024
  10. 2025
  11. 2026
  12. 2027
  • FY2016 (effective 10/1/2015): Added (first year of ICD-10-CM)
  • No changes since FY2016.

Common questions about F18.1

Is F18.1 billable?

No. F18.1 is a header code. Report one of its more specific subcodes instead.