F16

ICD-10Non-billable category

Hallucinogen related disorders

Official ICD-10-CM descriptor (FY2026)

Hallucinogen related disorders

F16 is a category heading, not a billable code. CMS does not accept it on a claim; report one of the more specific codes beneath it.

Includes

ecstasy
PCP
phencyclidine

More specific codes under F16

Where this code sits

Chapter: 5. Mental, Behavioral and Neurodevelopmental disorders (F01-F99)
Block: Mental and behavioral disorders due to psychoactive substance use (F10-F19)

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Source

ICD-10-CM FY2026. Centers for Medicare & Medicaid Services (CMS) / National Center for Health Statistics (NCHS), “2026 ICD-10-CM Code Descriptions in Tabular Order” (icd10cm_order_2026.txt). Download the original file from cms.gov. Public domain (US Government work). Descriptors, billable flags and instructional notes on this page are reproduced from that file without modification. Krasyn adds no clinical guidance.