F16.9
Non-billableHallucinogen use, unspecified
Hallucinogen use, unspecified
This is a header/category code. For billing purposes, use a more specific child code from the list below.
Coding Notes
Includes
Conditions included under this code
- disorders of psychological development
- ecstasy
- PCP
- phencyclidine
Excludes 1
Codes that cannot be used together with this code (mutual exclusion)
Excludes 2
Conditions not included here, but the patient may have both
Child Codes (7)
F16.90Hallucinogen use, unspecified, uncomplicated
F16.91Hallucinogen use, unspecified, in remission
F16.92Hallucinogen use, unspecified with intoxication
F16.94Hallucinogen use, unsp w hallucinogen-induced mood disorder
F16.95Hallucinogen use, unsp w psychotic disorder
F16.98Hallucinogen use, unsp w oth hallucinogen-induced disorder
F16.99Hallucinogen use, unsp w unsp hallucinogen-induced disorder
Related Codes(2)
ICD-11 Equivalents(1)
ICD-11 Equivalents
View full mappingCorresponding ICD-11 codes from the WHO crosswalk mapping
Also Known As / Clinical Terms(1)
Frequently Asked Questions
What is the ICD-10 code for hallucinogen use, unspecified?
The ICD-10-CM code for hallucinogen use, unspecified is F16.9. The full clinical description is "Hallucinogen use, unspecified". F16.9 is a non-billable header code. Use a more specific child code for billing purposes.
What does ICD-10 code F16.9 mean?
ICD-10-CM code F16.9 represents “Hallucinogen use, unspecified”. It is classified under Chapter 5: Mental, Behavioral and Neurodevelopmental Disorders and is a non-billable header code. Use a more specific child code for billing purposes.
Is F16.9 a billable code?
No, F16.9 is a non-billable header code. You need to use one of its more specific child codes for billing. There are 7 child codes under F16.9.
What chapter is F16.9 in?
F16.9 is in Chapter 5: Mental, Behavioral and Neurodevelopmental Disorders (codes F01-F99).
What codes cannot be used with F16.9?
F16.9 has Excludes1 notes indicating codes that cannot be used together with it, including: hallucinogen abuse (F16.1-); hallucinogen dependence (F16.2-).
What are the subcategories under F16.9?
F16.9 has 7 child codes, including: F16.90 (Hallucinogen use, unspecified, uncomplicated), F16.91 (Hallucinogen use, unspecified, in remission), F16.92 (Hallucinogen use, unspecified with intoxication), F16.94 (Hallucinogen use, unsp w hallucinogen-induced mood disorder), and 3 more.
What are the UMLS CUIs for F16.9?
F16.9 is linked to 1 UMLS Concept Unique Identifier: C2874707. The UMLS (Unified Medical Language System) integrates multiple biomedical vocabularies maintained by the U.S. National Library of Medicine.
How does F16.9 relate to ICF functioning codes?
ICF (International Classification of Functioning, Disability and Health) codes describe how conditions like hallucinogen use, unspecified affect a person's functioning — body functions, activities, participation, and environmental factors. AutoICD provides ICF Core Sets for 12+ conditions and can map clinical text to ICF categories automatically. Browse the ICF directory to explore functioning codes.
What is the ICD-11 equivalent of F16.9?
F16.9 maps to the ICD-11 code: 6C49.Z (Disorders due to use of hallucinogens, unspecified).
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Includes SNOMED Clinical Terms® (SNOMED CT®) used by permission of SNOMED International. Includes content from the UMLS Metathesaurus, courtesy of the U.S. National Library of Medicine.