2020 ICD-10-CM Diagnosis Code F31.81

Bipolar II disorder

    2016 2017 2018 2019 2020 Billable/Specific Code
  • F31.81 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 F31.81 became effective on October 1, 2019.
  • This is the American ICD-10-CM version of F31.81 - other international versions of ICD-10 F31.81 may differ.
Applicable To
  • Bipolar disorder, type 2
The following code(s) above F31.81 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 F31.81:
  • 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
  • F31
    ICD-10-CM Diagnosis Code F31

    Bipolar disorder

      2016 2017 2018 2019 2020 Non-Billable/Non-Specific Code
    Includes
    • bipolar I disorder
    • bipolar type I disorder
    • manic-depressive illness
    • manic-depressive psychosis
    • manic-depressive reaction
    Type 1 Excludes
    • bipolar disorder, single manic episode (F30.-)
    • major depressive disorder, single episode (F32.-)
    • major depressive disorder, recurrent (F33.-)
    Type 2 Excludes
    Bipolar disorder
Approximate Synonyms
  • Bipolar 2 disorder
  • Bipolar 2 disorder, chronic, major depressive episode
  • Bipolar 2 disorder, depressed episode
  • Bipolar 2 disorder, depressed episode w catatonia
  • Bipolar 2 disorder, depressed episode w mixed features
  • Bipolar 2 disorder, hypomanic episode
  • Bipolar 2 disorder, hypomanic episode w mixed features
  • Bipolar 2 disorder, in full remission
  • Bipolar 2 disorder, in partial remission
  • Bipolar 2 disorder, major depressive episode
  • Bipolar 2 disorder, major depressive episode catatonia
  • Bipolar 2 disorder, major depressive episode,
  • Bipolar 2 disorder, major depressive episode, atypical
  • Bipolar 2 disorder, mild, major depressive episode
  • Bipolar 2 disorder, moderate, major depressive episode
  • Bipolar 2 disorder, most recent episode rapid cycling
  • Bipolar 2 disorder, severe, major depressive episode
  • Bipolar disorder
  • Bipolar ii disorder, in full remission
  • Bipolar ii disorder, in partial remission
  • Bipolar ii disorder, most recent episode hypomanic
  • Bipolar ii disorder, most recent episode major depressive
  • Bipolar ii disorder, most recent episode major depressive with atypical features
  • Bipolar ii disorder, most recent episode major depressive with catatonic features
  • Bipolar ii disorder, most recent episode major depressive with melancholic features
  • Bipolar ii disorder, most recent episode rapid cycling
  • Chronic bipolar ii disorder, most recent episode major depressive
  • Mild bipolar ii disorder, most recent episode major depressive
  • Mixed depressed bipolar ii disorder
  • Mixed hypomanic bipolar ii disorder
  • Moderate bipolar ii disorder, most recent episode major depressive
  • Severe bipolar ii disorder, most recent episode major depressive with psychotic features
  • Severe bipolar ii disorder, most recent episode major depressive with psychotic features, mood-congruent
  • Severe bipolar ii disorder, most recent episode major depressive with psychotic features, mood-incongruent
  • Severe bipolar ii disorder, most recent episode major depressive without psychotic features
ICD-10-CM F31.81 is grouped within Diagnostic Related Group(s) (MS-DRG v37.0):
  • 885 Psychoses

Convert F31.81 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 F31.81:
  • Disorder (of) - see also Disease
    • bipolar (I) (type 1) F31.9
      ICD-10-CM Diagnosis Code F31.9

      Bipolar disorder, unspecified

        2016 2017 2018 2019 2020 Billable/Specific Code
      Applicable To
      • Manic depression
      • II F31.81 (type 2)

ICD-10-CM Codes Adjacent To F31.81
F31.70 …… most recent episode unspecified
F31.71 Bipolar disorder, in partial remission, most recent episode hypomanic
F31.72 Bipolar disorder, in full remission, most recent episode hypomanic
F31.73 Bipolar disorder, in partial remission, most recent episode manic
F31.74 Bipolar disorder, in full remission, most recent episode manic
F31.75 Bipolar disorder, in partial remission, most recent episode depressed
F31.76 Bipolar disorder, in full remission, most recent episode depressed
F31.77 Bipolar disorder, in partial remission, most recent episode mixed
F31.78 Bipolar disorder, in full remission, most recent episode mixed
F31.8 Other bipolar disorders
F31.81 Bipolar II disorder
F31.89 Other bipolar disorder
F31.9 Bipolar disorder, unspecified
F32 Major depressive disorder, single episode
F32.0 Major depressive disorder, single episode, mild
F32.1 Major depressive disorder, single episode, moderate
F32.2 Major depressive disorder, single episode, severe without psychotic features
F32.3 Major depressive disorder, single episode, severe with psychotic features
F32.4 Major depressive disorder, single episode, in partial remission
F32.5 Major depressive disorder, single episode, in full remission
F32.8 Other depressive episodes

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