2018/2019 ICD-10-CM Diagnosis Code F09

Unspecified mental disorder due to known physiological condition

Applicable To
  • Mental disorder NOS due to known physiological condition
  • Organic brain syndrome NOS
  • Organic mental disorder NOS
  • Organic psychosis NOS
  • Symptomatic psychosis NOS
Code First
Code First Help
Certain conditions have both an underlying etiology and multiple body system manifestations due to the underlying etiology. For such conditions, ICD-10-CM has a coding convention that requires the underlying condition be sequenced first followed by the manifestation. Wherever such a combination exists there is a "use additional code" note at the etiology code, and a "code first" note at the manifestation code. These instructional notes indicate the proper sequencing order of the codes, etiology followed by manifestation. In most cases the manifestation codes will have in the code title, "in diseases classified elsewhere." Codes with this title are a component of the etiology/manifestation convention. The code title indicates that it is a manifestation code. "In diseases classified elsewhere" codes are never permitted to be used as first listed or principle diagnosis codes. They must be used in conjunction with an underlying condition code and they must be listed following the underlying condition.
  • the underlying physiological condition
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 F09. 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.
  • psychosis NOS (
    ICD-10-CM Diagnosis Code F29

    Unspecified psychosis not due to a substance or known physiological condition

      2016 2017 2018 2019 Billable/Specific Code
    Applicable To
    • Psychosis NOS
    • Unspecified schizophrenia spectrum and other psychotic disorder
    Type 1 Excludes
    • mental disorder NOS (F99)
    • unspecified mental disorder due to known physiological condition (F09)
    F29
    )
The following code(s) above F09 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 F09:
  • F01-F99
    2019 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
  • F01-F09
    2019 ICD-10-CM Range F01-F09

    Mental disorders due to known physiological conditions

    Note
    • This block comprises a range of mental disorders grouped together on the basis of their having in common a demonstrable etiology in cerebral disease, brain injury, or other insult leading to cerebral dysfunction. The dysfunction may be primary, as in diseases, injuries, and insults that affect the brain directly and selectively; or secondary, as in systemic diseases and disorders that attack the brain only as one of the multiple organs or systems of the body that are involved.
    Mental disorders due to known physiological conditions
Approximate Synonyms Clinical Information ICD-10-CM F09 is grouped within Diagnostic Related Group(s) (MS-DRG v36.0):

Convert F09 to ICD-9-CM

Code History
Code annotations containing back-references to F09:

Diagnosis Index entries containing back-references to F09:

ICD-10-CM Codes Adjacent To F09
F06.33 …… with manic features
F06.34 …… with mixed features
F06.4 Anxiety disorder due to known physiological condition
F06.8 Other specified mental disorders due to known physiological condition
F07 Personality and behavioral disorders due to known physiological condition
F07.0 Personality change due to known physiological condition
F07.8 Other personality and behavioral disorders due to known physiological condition
F07.81 Postconcussional syndrome
F07.89 Other personality and behavioral disorders due to known physiological condition
F07.9 Unspecified personality and behavioral disorder due to known physiological condition
F09 Unspecified mental disorder due to known physiological condition
F10 Alcohol related disorders
F10.1 Alcohol abuse
F10.10 …… uncomplicated
F10.11 …… in remission
F10.12 Alcohol abuse with intoxication
F10.120 …… uncomplicated
F10.121 …… delirium
F10.129 …… unspecified
F10.14 …… with alcohol-induced mood disorder
F10.15 Alcohol abuse with alcohol-induced psychotic disorder

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