2023 ICD-10-CM Diagnosis Code F43.21

Adjustment disorder with depressed mood

    2016 2017 2018 2019 2020 2021 2022 2023 Billable/Specific Code
  • F43.21 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 F43.21 became effective on October 1, 2022.
  • This is the American ICD-10-CM version of F43.21 - other international versions of ICD-10 F43.21 may differ.
The following code(s) above F43.21 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 F43.21:
  • F01-F99
    2023 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
  • F43.2
    ICD-10-CM Diagnosis Code F43.2

    Adjustment disorders

      2016 2017 2018 2019 2020 2021 2022 2023 Non-Billable/Non-Specific Code
    Applicable To
    • Culture shock
    • Grief reaction
    • Hospitalism in children
    Type 2 Excludes
    • separation anxiety disorder of childhood (F93.0)
    Adjustment disorders
Approximate Synonyms
  • Adjustment reaction, depressive, brief
  • Adjustment reaction, depressive, prolonged
  • Bereavement, complicated
  • Brief depressive adjustment reaction
  • Complicated bereavement
  • Complicated grieving
  • Prolonged depressive adjustment reaction
ICD-10-CM F43.21 is grouped within Diagnostic Related Group(s) (MS-DRG v40.0):
  • 881 Depressive neuroses

Convert F43.21 to ICD-9-CM

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

Diagnosis Index entries containing back-references to F43.21:
  • Depression (acute) (mental) F32.A
    ICD-10-CM Diagnosis Code F32.A

    Depression, unspecified

      2022 - New Code 2023 Billable/Specific Code
    Applicable To
    • Depression NOS
    • Depressive disorder NOS
    • situational F43.21
  • Disorder (of) - see also Disease
    • adjustment (grief) F43.20
      ICD-10-CM Diagnosis Code F43.20

      Adjustment disorder, unspecified

        2016 2017 2018 2019 2020 2021 2022 2023 Billable/Specific Code
  • Grief F43.21

ICD-10-CM Codes Adjacent To F43.21
F42.8 Other obsessive-compulsive disorder
F42.9 Obsessive-compulsive disorder, unspecified
F43 Reaction to severe stress, and adjustment disorders
F43.0 Acute stress reaction
F43.1 Post-traumatic stress disorder (PTSD)
F43.10 Post-traumatic stress disorder, unspecified
F43.11 Post-traumatic stress disorder, acute
F43.12 Post-traumatic stress disorder, chronic
F43.2 Adjustment disorders
F43.20 Adjustment disorder, unspecified
F43.21 Adjustment disorder with depressed mood
F43.22 Adjustment disorder with anxiety
F43.23 Adjustment disorder with mixed anxiety and depressed mood
F43.24 Adjustment disorder with disturbance of conduct
F43.25 Adjustment disorder with mixed disturbance of emotions and conduct
F43.29 Adjustment disorder with other symptoms
F43.8 Other reactions to severe stress
F43.81 Prolonged grief disorder
F43.89 Other reactions to severe stress
F43.9 Reaction to severe stress, unspecified
F44 Dissociative and conversion disorders

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