1. ICD-10-CM Codes
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2. F01-F99
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3. F40-F48
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4. F44-
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5. 2023 ICD-10-CM Diagnosis Code F44.9

2023 ICD-10-CM Diagnosis Code F44.9

Dissociative and conversion disorder, unspecified

2016 2017 2018 2019 2020 2021 2022 2023 Billable/Specific Code

• F44.9 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
• The 2023 edition of ICD-10-CM F44.9 became effective on October 1, 2022.
• This is the American ICD-10-CM version of F44.9 - other international versions of ICD-10 F44.9 may differ.

• Anxiety hysteria
• Conversion reaction, psychogenic
• Dissociative disorder
• Hysteria
• Psychologic conversion disorder

• A category of psychiatric disorders which are characterized by a disruption in the usually integrated functions of consciousness, memory, identity, and/or perception of the environment.
• Mental disorders characterized by disruptions and/or alterations in the normally integrated functions of consciousness, memory, or identity. Compare dissociation.
• Sudden temporary alterations in the normally integrative functions of consciousness.

• 880 Acute adjustment reaction and psychosocial dysfunction

Convert F44.9 to ICD-9-CM

• 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
• 2021 (effective 10/1/2020): No change
• 2022 (effective 10/1/2021): No change
• 2023 (effective 10/1/2022): No change

• Attack, attacks
  • hysterical F44.9
• Conversion hysteria, neurosis or reaction F44.9
• Disorder (of) - see also Disease
  • dissociative F44.9
• Dissociative reaction, state F44.9
• Hysteria, hysterical (conversion) (dissociative state) F44.9
  • psychosis, acute F44.9
• Neurosis, neurotic F48.9
  ICD-10-CM Diagnosis Code F48.9

  Nonpsychotic mental disorder, unspecified

  2016 2017 2018 2019 2020 2021 2022 2023 Billable/Specific Code

  Applicable To

  • Neurosis NOS
  • conversion F44.9
  • hysterical F44.9
• Psychoneurosis, psychoneurotic - see also Neurosis
  • hysteria F44.9
• Psychosis, psychotic F29
  ICD-10-CM Diagnosis Code F29

  Unspecified psychosis not due to a substance or known physiological condition

  2016 2017 2018 2019 2020 2021 2022 2023 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)
  • acute (transient) F23
    ICD-10-CM Diagnosis Code F23

    Brief psychotic disorder

    2016 2017 2018 2019 2020 2021 2022 2023 Billable/Specific Code

    Applicable To

    • Paranoid reaction
    • Psychogenic paranoid psychosis

    Type 2 Excludes

    • mood [affective] disorders with psychotic symptoms (F30.2, F31.2, F31.5, F31.64, F32.3, F33.3)
    • hysterical F44.9
  • hysterical F44.9 (acute)
• Reaction - see also Disorder
  • conversion F44.9
  • dissociative F44.9
  • hysterical F44.9
• State (of)
  • dissociative F44.9
• Substitution disorder F44.9

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