2020 ICD-10-CM Diagnosis Code F33.9

Major depressive disorder, recurrent, unspecified

    2016 2017 2018 2019 2020 Billable/Specific Code
  • F33.9 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
  • The 2020 edition of ICD-10-CM F33.9 became effective on October 1, 2019.
  • This is the American ICD-10-CM version of F33.9 - other international versions of ICD-10 F33.9 may differ.
Applicable To
  • Monopolar depression NOS
The following code(s) above F33.9 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 F33.9:
  • F01-F99
    2020 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
  • F33
    ICD-10-CM Diagnosis Code F33

    Major depressive disorder, recurrent

      2016 2017 2018 2019 2020 Non-Billable/Non-Specific Code
    Includes
    • recurrent episodes of depressive reaction
    • recurrent episodes of endogenous depression
    • recurrent episodes of major depression
    • recurrent episodes of psychogenic depression
    • recurrent episodes of reactive depression
    • recurrent episodes of seasonal depressive disorder
    • recurrent episodes of vital depression
    Type 1 Excludes
    Major depressive disorder, recurrent
Approximate Synonyms
  • Depression, major, recurrent
  • Major depression, recurrent
  • Major depressive disorder, recurrent episode
  • Major depressive disorder, seasonal
  • Recurrent major depression
  • Severe recurrent seasonal major depression
Clinical Information
  • A disorder characterized by melancholic feelings of grief or unhappiness.
  • A melancholy feeling of sadness and despair.
  • A mental condition marked by ongoing feelings of sadness, despair, loss of energy, and difficulty dealing with normal daily life. Other symptoms of depression include feelings of worthlessness and hopelessness, loss of pleasure in activities, changes in eating or sleeping habits, and thoughts of death or suicide. Depression can affect anyone, and can be successfully treated. Depression affects 15-25% of cancer patients.
  • Depression is a serious medical illness that involves the brain. It's more than just a feeling of being "down in the dumps" or "blue" for a few days. If you are one of the more than 20 million people in the United States who have depression, the feelings do not go away. They persist and interfere with your everyday life. Symptoms can include
    • sadness
    • loss of interest or pleasure in activities you used to enjoy
    • change in weight
    • difficulty sleeping or oversleeping
    • energy loss
    • feelings of worthlessness
    • thoughts of death or suicide
    depression is a disorder of the brain. There are a variety of causes, including genetic, environmental, psychological, and biochemical factors. Depression usually starts between the ages of 15 and 30, and is much more common in women. Women can also get postpartum depression after the birth of a baby. Some people get seasonal affective disorder in the winter. Depression is one part of bipolar disorder.there are effective treatments for depression, including antidepressants and talk therapy. Most people do best by using both.
  • Depressive states usually of moderate intensity in contrast with major depression present in neurotic and psychotic disorders.
  • Mild depression that is not considered clinical depression. For clinical depression, use major depression.
  • Unpleasant, but not necessarily irrational or pathological, mood state characterized by sadness, despair, or discouragement; "the blues"; may also involve low self-esteem, social withdrawal, and somatic symptoms such as eating and sleep disturbance.
ICD-10-CM F33.9 is grouped within Diagnostic Related Group(s) (MS-DRG v37.0):
  • 885 Psychoses

Convert F33.9 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

Diagnosis Index entries containing back-references to F33.9:
  • Depression (acute) (mental) F32.9
    ICD-10-CM Diagnosis Code F32.9

    Major depressive disorder, single episode, unspecified

      2016 2017 2018 2019 2020 Billable/Specific Code
    Applicable To
    • Depression NOS
    • Depressive disorder NOS
    • Major depression NOS
    • monopolar F33.9
  • Disorder (of) - see also Disease
    • depressive F32.9
      ICD-10-CM Diagnosis Code F32.9

      Major depressive disorder, single episode, unspecified

        2016 2017 2018 2019 2020 Billable/Specific Code
      Applicable To
      • Depression NOS
      • Depressive disorder NOS
      • Major depression NOS
      • major F32.9
        ICD-10-CM Diagnosis Code F32.9

        Major depressive disorder, single episode, unspecified

          2016 2017 2018 2019 2020 Billable/Specific Code
        Applicable To
        • Depression NOS
        • Depressive disorder NOS
        • Major depression NOS
      • recurrent F33.9
  • Episode
    • depressive F32.9
      ICD-10-CM Diagnosis Code F32.9

      Major depressive disorder, single episode, unspecified

        2016 2017 2018 2019 2020 Billable/Specific Code
      Applicable To
      • Depression NOS
      • Depressive disorder NOS
      • Major depression NOS
  • Involution, involutional - see also condition
    • depression (single episode) F32.89
      ICD-10-CM Diagnosis Code F32.89

      Other specified depressive episodes

        2017 - New Code 2018 2019 2020 Billable/Specific Code
      Applicable To
      • Atypical depression
      • Post-schizophrenic depression
      • Single episode of 'masked' depression NOS
      • recurrent episode F33.9
  • Melancholia F32.9
    ICD-10-CM Diagnosis Code F32.9

    Major depressive disorder, single episode, unspecified

      2016 2017 2018 2019 2020 Billable/Specific Code
    Applicable To
    • Depression NOS
    • Depressive disorder NOS
    • Major depression NOS
    • recurrent F33.9
  • Menopause, menopausal (asymptomatic) (state) Z78.0
    ICD-10-CM Diagnosis Code Z78.0

    Asymptomatic menopausal state

      2016 2017 2018 2019 2020 Billable/Specific Code Adult Dx (15-124 years) POA Exempt
    Applicable To
    • Menopausal state NOS
    • Postmenopausal status NOS
    Type 2 Excludes
    • symptomatic menopausal state (N95.1)
    • depression (single episode) F32.89
      ICD-10-CM Diagnosis Code F32.89

      Other specified depressive episodes

        2017 - New Code 2018 2019 2020 Billable/Specific Code
      Applicable To
      • Atypical depression
      • Post-schizophrenic depression
      • Single episode of 'masked' depression NOS
      • agitated (single episode) F32.2
        ICD-10-CM Diagnosis Code F32.2

        Major depressive disorder, single episode, severe without psychotic features

          2016 2017 2018 2019 2020 Billable/Specific Code
        • recurrent episode F33.9
      • psychotic (single episode) F32.89
        ICD-10-CM Diagnosis Code F32.89

        Other specified depressive episodes

          2017 - New Code 2018 2019 2020 Billable/Specific Code
        Applicable To
        • Atypical depression
        • Post-schizophrenic depression
        • Single episode of 'masked' depression NOS
        • recurrent episode F33.9
  • Reaction - see also Disorder
    • depressive (single episode) F32.9
      ICD-10-CM Diagnosis Code F32.9

      Major depressive disorder, single episode, unspecified

        2016 2017 2018 2019 2020 Billable/Specific Code
      Applicable To
      • Depression NOS
      • Depressive disorder NOS
      • Major depression NOS
      • affective (single episode) F31.4
        ICD-10-CM Diagnosis Code F31.4

        Bipolar disorder, current episode depressed, severe, without psychotic features

          2016 2017 2018 2019 2020 Billable/Specific Code
        • recurrent episode F33.9

ICD-10-CM Codes Adjacent To F33.9
F33 Major depressive disorder, recurrent
F33.0 Major depressive disorder, recurrent, mild
F33.1 Major depressive disorder, recurrent, moderate
F33.2 Major depressive disorder, recurrent severe without psychotic features
F33.3 Major depressive disorder, recurrent, severe with psychotic symptoms
F33.4 Major depressive disorder, recurrent, in remission
F33.40 …… unspecified
F33.41 Major depressive disorder, recurrent, in partial remission
F33.42 Major depressive disorder, recurrent, in full remission
F33.8 Other recurrent depressive disorders
F33.9 Major depressive disorder, recurrent, unspecified
F34 Persistent mood [affective] disorders
F34.0 Cyclothymic disorder
F34.1 Dysthymic disorder
F34.8 Other persistent mood [affective] disorders
F34.81 Disruptive mood dysregulation disorder
F34.89 Other specified persistent mood disorders
F34.9 Persistent mood [affective] disorder, unspecified
F39 Unspecified mood [affective] disorder
F40 Phobic anxiety disorders
F40.0 Agoraphobia

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