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ICD-10-CM 2027 diagnosis code

F18Inhalant related disorders

Not billable — use a more specific code

F18 is a header code, so it can't be reported by itself. Choose one of the 3 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

F18 is the ICD-10-CM diagnosis code for Inhalant related disorders. It belongs to 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 3 subcodes must be used instead.

To report this condition, pick the subcode that matches the documentation: F18.1 (abuse), F18.2 (dependence) and F18.9 (unspecified).

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

Coding notes

IncludesFurther defines the content of the category
  • volatile solvents

Notes that apply from higher levels

Instructions written at a parent level also apply to F18.

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

Codes whose notes reference F18

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

Is F18 billable?

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