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F16

F16Hallucinogen related disorders

Non-billable headerICD-10-CM

F16 is a non-billable header ICD-10-CM code for hallucinogen related disorders. It cannot be billed on its own: choose one of the more specific child codes below.

Includes

Conditions this code covers.

  • ecstasy
  • PCP
  • phencyclidine

Other codes that can never be billed with F16

These codes carry an Excludes1 note pointing at F16. The conflict binds both ways, but ICD-10-CM only writes it down on one side — so you would not find this by reading F16 alone.

  • F16.2Hallucinogen dependence
  • F16.9Hallucinogen use, unspecified
  • F16.1Hallucinogen abuse

Risk adjustment

F16 does not map to an HCC and does not risk-adjust under CMS-HCC V28. That is normal — most ICD-10 codes do not. It still needs to be coded correctly; it just will not move a RAF score.

Code to one of these instead F16

3 child codes. Green means billable.

Questions about F16

Is F16 a billable ICD-10-CM code?
No. F16 is a non-billable header code. Code to a higher level of specificity using one of its child codes.
Where does F16 sit in the tabular list?
Mental, Behavioral and Neurodevelopmental disorders (F01-F99), in the block Mental and behavioral disorders due to psychoactive substance use (F10-F19).
ICD-10-CMFY2026-Apr· effective April 1, 2026

Loaded directly from the CMS/NCHS ICD-10-CM public-domain release — see data sources and our editorial policy. If this page disagrees with the CMS tabular list, this page is wrong. Reference information for professional coders; not medical or billing advice.