2020 ICD-10-CM Diagnosis Code F16.9

Hallucinogen use, unspecified

    2016 2017 2018 2019 2020 Non-Billable/Non-Specific Code
  • F16.9 should not be used for reimbursement purposes as there are multiple codes below it that contain a greater level of detail.
  • The 2020 edition of ICD-10-CM F16.9 became effective on October 1, 2019.
  • This is the American ICD-10-CM version of F16.9 - other international versions of ICD-10 F16.9 may differ.
Type 1 Excludes
Type 1 Excludes Help
A type 1 excludes note is a pure excludes. It means "not coded here". A type 1 excludes note indicates that the code excluded should never be used at the same time as F16.9. A type 1 excludes note is for used for when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.
  • hallucinogen abuse (
    ICD-10-CM Diagnosis Code F16.1

    Hallucinogen abuse

      2016 2017 2018 2019 2020 Non-Billable/Non-Specific Code
    Type 1 Excludes
    • hallucinogen dependence (F16.2-)
    • hallucinogen use, unspecified (F16.9-)
    F16.1-
    )
  • hallucinogen dependence (
    ICD-10-CM Diagnosis Code F16.2

    Hallucinogen dependence

      2016 2017 2018 2019 2020 Non-Billable/Non-Specific Code
    Type 1 Excludes
    • hallucinogen abuse (F16.1-)
    • hallucinogen use, unspecified (F16.9-)
    F16.2-
    )
The following code(s) above F16.9 contain annotation back-references
Annotation Back-References
In this context, annotation back-references refer to codes that contain:
  • Applicable To annotations, or
  • Code Also annotations, or
  • Code First annotations, or
  • Excludes1 annotations, or
  • Excludes2 annotations, or
  • Includes annotations, or
  • Note annotations, or
  • Use Additional annotations
that may be applicable to F16.9:
  • F01-F99
    2020 ICD-10-CM Range F01-F99

    Mental, Behavioral and Neurodevelopmental disorders

    Includes
    • disorders of psychological development
    Type 2 Excludes
    • symptoms, signs and abnormal clinical laboratory findings, not elsewhere classified (R00-R99)
    Mental, Behavioral and Neurodevelopmental disorders
  • F16
    ICD-10-CM Diagnosis Code F16

    Hallucinogen related disorders

      2016 2017 2018 2019 2020 Non-Billable/Non-Specific Code
    Includes
    • ecstasy
    • PCP
    • phencyclidine
    Hallucinogen related disorders
Code History
  • 2016 (effective 10/1/2015): New code (first year of non-draft ICD-10-CM)
  • 2017 (effective 10/1/2016): No change
  • 2018 (effective 10/1/2017): No change
  • 2019 (effective 10/1/2018): No change
  • 2020 (effective 10/1/2019): No change
Code annotations containing back-references to F16.9:
  • Type 1 Excludes: F16.1
    , F16.2
    ICD-10-CM Diagnosis Code F16.1

    Hallucinogen abuse

      2016 2017 2018 2019 2020 Non-Billable/Non-Specific Code
    Type 1 Excludes
    • hallucinogen dependence (F16.2-)
    • hallucinogen use, unspecified (F16.9-)
    ICD-10-CM Diagnosis Code F16.2

    Hallucinogen dependence

      2016 2017 2018 2019 2020 Non-Billable/Non-Specific Code
    Type 1 Excludes
    • hallucinogen abuse (F16.1-)
    • hallucinogen use, unspecified (F16.9-)
ICD-10-CM Codes Adjacent To F16.9
F16.24 …… with hallucinogen-induced mood disorder
F16.25 Hallucinogen dependence with hallucinogen-induced psychotic disorder
F16.250 …… with delusions
F16.251 …… with hallucinations
F16.259 …… unspecified
F16.28 Hallucinogen dependence with other hallucinogen-induced disorder
F16.280 Hallucinogen dependence with hallucinogen-induced anxiety disorder
F16.283 Hallucinogen dependence with hallucinogen persisting perception disorder (flashbacks)
F16.288 Hallucinogen dependence with other hallucinogen-induced disorder
F16.29 …… with unspecified hallucinogen-induced disorder
F16.9 Hallucinogen use, unspecified
F16.90 …… uncomplicated
F16.92 Hallucinogen use, unspecified with intoxication
F16.920 …… uncomplicated
F16.921 …… with delirium
F16.929 …… unspecified
F16.94 …… with hallucinogen-induced mood disorder
F16.95 Hallucinogen use, unspecified with hallucinogen-induced psychotic disorder
F16.950 …… with delusions
F16.951 …… with hallucinations
F16.959 …… unspecified

Reimbursement claims with a date of service on or after October 1, 2015 require the use of ICD-10-CM codes.