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F16.1

F16.1: Hallucinogen abuse

Non-billable headerICD-10-CM

F16.1 is a non-billable header ICD-10-CM code for hallucinogen abuse. It cannot be billed on its own: choose one of the more specific child codes below.

Excludes1: never code together

These conditions cannot occur together. Billing both on the same encounter is a denial.

  • hallucinogen dependence (F16.2-)
  • hallucinogen use, unspecified (F16.9-)

Other codes that can never be billed with F16.1

Their own Excludes1 notes name this code, so the conflict is not listed above.

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

Risk adjustment

No CMS-HCC V28 category: this code does not change a RAF score.

Code history

Unchanged in every release from FY2024 to FY2027.

Code to one of these instead F16.1

7 child codes. Green means billable.

Other codes under F16

ICD-10-CMFY2027· effective October 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.