Mental disorder, not otherwise specified F99-

Applicable To
  • Mental illness NOS
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 F99. 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.
  • unspecified mental disorder due to known physiological condition (
    ICD-10-CM Diagnosis Code F09

    Unspecified mental disorder due to known physiological condition

      2016 2017 2018 2019 2020 2021 Billable/Specific Code
    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
    • the underlying physiological condition
    Type 1 Excludes
    • psychosis NOS (F29)
    F09
    )
Clinical Information
  • A disorder characterized by behavioral and/or psychological abnormalities, often accompanied by physical symptoms. The symptoms may cause clinically significant distress or impairment in social and occupational areas of functioning. Representative examples include anxiety disorders, cognitive disorders, mood disorders and schizophrenia.
  • Any deviation from the normal structure or function of the brain and a psychiatric condition, that results in an impairment of an individual's normal cognitive, emotional, or behavioral functioning, and is caused by physiological or psychosocial factors.
  • Any of various conditions characterized by impairment of an individual's normal cognitive, emotional, or behavioral functioning, and caused by social, psychological, biochemical, genetic, or other factors, such as infection or head trauma; note behavior disorders are a subset of mental disorder.
  • Conceptually broad term referring to all forms of psychopathology. Use a more specific term if possible.
  • Mental disorders include a wide range of problems, including
    • anxiety disorders, including panic disorder, obsessive-compulsive disorder, post-traumatic stress disorder, and phobias
    • bipolar disorder
    • depression
    • mood disorders
    • personality disorders
    • psychotic disorders, including schizophrenia
    there are many causes of mental disorders. Your genes and family history may play a role. Your life experiences, such as stress or a history of abuse, may also matter. Biological factors can also be part of the cause. A traumatic brain injury can lead to a mental disorder. A mother's exposure to viruses or toxic chemicals while pregnant may play a part. Other factors may increase your risk, such as use of illegal drugs or having a serious medical condition like cancer.medications and counseling can help many mental disorders.
  • Psychiatric illness or diseases manifested by breakdowns in the adaptational process expressed primarily as abnormalities of thought, feeling, and behavior producing either distress or impairment of function.
Codes
  • F99 Mental disorder, not otherwise specified