ICD-10-CM Code F34.1

Dysthymic disorder

Version 2020 Billable Code

Valid for Submission

F34.1 is a billable code used to specify a medical diagnosis of dysthymic disorder. The code is valid for the year 2020 for the submission of HIPAA-covered transactions. The ICD-10-CM code F34.1 might also be used to specify conditions or terms like chronic depression, chronic depressive personality disorder, dysthymia, early onset dysthymia, hypomanic personality disorder, late onset dysthymia, etc

Short Description:Dysthymic disorder
Long Description:Dysthymic disorder

Tabular List of Diseases and Injuries

The Tabular List of Diseases and Injuries is a list of ICD-10 codes, organized "head to toe" into chapters and sections with guidance for inclusions, exclusions, descriptions and more. The following references are applicable to the code F34.1:

Inclusion Terms

Inclusion Terms
These terms are the conditions for which that code is to be used. The terms may be synonyms of the code title, or, in the case of "other specified" codes, the terms are a list of the various conditions assigned to that code. The inclusion terms are not necessarily exhaustive. Additional terms found only in the Alphabetic Index may also be assigned to a code.
  • Depressive neurosis
  • Depressive personality disorder
  • Dysthymia
  • Neurotic depression
  • Persistent anxiety depression
  • Persistent depressive disorder

Type 2 Excludes

Type 2 Excludes
A type 2 excludes note represents "Not included here". An excludes2 note indicates that the condition excluded is not part of the condition represented by the code, but a patient may have both conditions at the same time. When an Excludes2 note appears under a code, it is acceptable to use both the code and the excluded code together, when appropriate.
  • anxiety depression mild or not persistent F41.8

Index to Diseases and Injuries

The Index to Diseases and Injuries is an alphabetical listing of medical terms, with each term mapped to one or more ICD-10 code(s). The following references for the code F34.1 are found in the index:


The following clinical terms are approximate synonyms or lay terms that might be used to identify the correct diagnosis code:

  • Chronic depression
  • Chronic depressive personality disorder
  • Dysthymia
  • Early onset dysthymia
  • Hypomanic personality disorder
  • Late onset dysthymia
  • Lifelong depressive personality trait
  • Primary dysthymia
  • Primary dysthymia early onset
  • Primary dysthymia late onset
  • Secondary dysthymia
  • Secondary dysthymia early onset
  • Secondary dysthymia late onset

Clinical Information

  • DYSTHYMIC DISORDER-. chronically depressed mood that occurs for most of the day more days than not for at least 2 years. the required minimum duration in children to make this diagnosis is 1 year. during periods of depressed mood at least 2 of the following additional symptoms are present: poor appetite or overeating insomnia or hypersomnia low energy or fatigue low self esteem poor concentration or difficulty making decisions and feelings of hopelessness. dsm iv

Convert F34.1 to ICD-9

  • 300.4 - Dysthymic disorder (Approximate Flag)
  • 301.12 - Chr depressive person (Approximate Flag)

Code Classification

  • Mental and behavioural disorders (F00–F99)
    • Mood [affective] disorders (F30-F39)
      • Persistent mood [affective] disorders (F34)

Code History

  • FY 2016 - New Code, effective from 10/1/2015 through 9/30/2016
    (First year ICD-10-CM implemented into the HIPAA code set)
  • FY 2017 - No Change, effective from 10/1/2016 through 9/30/2017
  • FY 2018 - No Change, effective from 10/1/2017 through 9/30/2018
  • FY 2019 - No Change, effective from 10/1/2018 through 9/30/2019
  • FY 2020 - No Change, effective from 10/1/2019 through 9/30/2020

Information for Patients


Depression is a serious medical illness. It's more than just a feeling of being sad or "blue" for a few days. If you are one of the more than 19 million teens and adults in the United States who have depression, the feelings do not go away. They persist and interfere with your everyday life. Symptoms can include

  • Feeling sad or "empty"
  • Loss of interest in favorite activities
  • Overeating, or not wanting to eat at all
  • Not being able to sleep, or sleeping too much
  • Feeling very tired
  • Feeling hopeless, irritable, anxious, or guilty
  • Aches or pains, headaches, cramps, or digestive problems
  • Thoughts of death or suicide

Depression is a disorder of the brain. There are a variety of causes, including genetic, biological, environmental, and psychological factors. Depression can happen at any age, but it often begins in teens and young adults. It 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, talk therapy, or both.

NIH: National Institute of Mental Health

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