F16
Hallucinogen related disorders
F16 is a non-billable ICD-10-CM code category for hallucinogen related disorders. Report a more specific code from it instead. It is part of the FY2027 code set, effective October 1, 2026. The more specific codes under it are F16.1 Hallucinogen abuse; F16.2 Hallucinogen dependence and F16.9 Hallucinogen use, unspecified. Its coding notes include 1 Excludes2 entry.
Guidelines tips
From the FY2027 Official Guidelines. ICD10Ref adds no rules of its own.
When use, abuse and dependence of the same substance are all documented, one code is assigned, by a set hierarchy.
A medical condition due to substance use is coded from the Alphabetic Index along with the substance use, abuse or dependence code, not as a substance-induced disorder.
Excludes2
Not included here. Both codes may be reported if the patient has both conditions.
Also from chapter/block level (1 note)
- symptoms, signs and abnormal clinical laboratory findings, not elsewhere classified (R00-R99)
Includes
Further defines or gives examples of the content of the category.
- ecstasy
- PCP
- phencyclidine
Also from chapter/block level (1 note)
- disorders of psychological development