Code Attributes
- Billable/Specific Code
Applicable To
- Mental illness NOS
Approximate Synonyms
- Emotional or mental disease in mother complicating
- Mental disorder
- Mental disorder in childbirth
- Mental disorder in pregnancy
- Mental disorder in the puerperium - baby delivered
- Nonpsychotic psychological disorder after brain damage
- Psychological disorder
- Psychological disorder during pregnancy
- Psychological disorder in pregnancy
- Psychological illness, affecting pregnancy management after childbirth
- Specific nonpsychotic mental disorders following organic brain damage
- Unspecified psychological disorder
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.
Type 1 Excludes
- Unspecified mental disorder due to known physiological condition (F09)
Codes
- F99 Mental disorder, not otherwise specified
Sources
- "ICD-10 Code for Mental disorder, not otherwise specified- F99- Codify by AAPC". Codify By AAPC. American Academy of Professional Coders, n.d., https://www.aapc.com/codes/icd-10-codes/F99. Accessed 27 Jan 2025.
- "2025 ICD-10-CM Diagnosis Code F99: Mental disorder, not otherwise specified". ICD10Data. ICD10Data, n.d., https://www.icd10data.com/ICD10CM/Codes/F01-F99/F99-F99/F99-/F99. Accessed 27 Jan 2025.
- "Mental disorder (Concept Id: C0004936) - MedGen - NCBI". National Library of Medicine - National Center For Biotechnology Information. National Institute Of Health, n.d., https://www.ncbi.nlm.nih.gov/medgen/14047. Accessed 27 Jan 2025.
- "2025 ICD-10-CM Diagnosis Code F99: Mental disorder, not otherwise specified". ICD10Data. ICD10Data, n.d., https://www.icd10data.com/ICD10CM/Codes/F01-F99/F99-F99/F99-/F99. Accessed 27 Jan 2025.
- "2025 ICD-10-CM Diagnosis Code F99: Mental disorder, not otherwise specified". ICD10Data. ICD10Data, n.d., https://www.icd10data.com/ICD10CM/Codes/F01-F99/F99-F99/F99-/F99. Accessed 27 Jan 2025.
- "2025 ICD-10-CM Diagnosis Code F99: Mental disorder, not otherwise specified". ICD10Data. ICD10Data, n.d., https://www.icd10data.com/ICD10CM/Codes/F01-F99/F99-F99/F99-/F99. Accessed 27 Jan 2025.
- "2025 ICD-10-CM Diagnosis Code F99: Mental disorder, not otherwise specified". ICD10Data. ICD10Data, n.d., https://www.icd10data.com/ICD10CM/Codes/F01-F99/F99-F99/F99-/F99. Accessed 27 Jan 2025.
- "Mental Disorders - MeSH - NCBI". National Library of Medicine - National Center For Biotechnology Information. National Institute Of Health, n.d., https://www.ncbi.nlm.nih.gov/mesh/68001523. Accessed 27 Jan 2025.
- "ICD-10 Code for Mental disorder, not otherwise specified- F99- Codify by AAPC". Codify By AAPC. American Academy of Professional Coders, n.d., https://www.aapc.com/codes/icd-10-codes/F99. Accessed 27 Jan 2025.