U.S. ICD-10-CM · FY 2027

F34.1 ICD-10-CM Code: Dysthymic disorder

A clear reference for the official code description, hierarchy, and related coding information from the FY 2027 U.S. release.

Code definition

Official description

F34.1

Dysthymic disorder

ICD-10-CM diagnosis code · United States clinical modification

Classification

Where F34.1 sits

  1. 1

    Chapter 5

    Mental, Behavioral and Neurodevelopmental disorders (F01-F99)

  2. 2

    Section

    Mood [affective] disorders (F30-F39)

  3. 3

    Category F34

    Persistent mood [affective] disorders

  4. 4

    Code F34.1

    Dysthymic disorder

Documentation details

Notes for this code

Inclusion terms

  • Depressive neurosis
  • Depressive personality disorder
  • Dysthymia
  • Neurotic depression
  • Persistent anxiety depression
  • Persistent depressive disorder

Code first

No “code first” instruction is listed for F34.1.

Use additional code

No “use additional code” instruction is listed for F34.1.

Excludes1

Conditions that should not be reported together with this code.

No Excludes1 note is listed for F34.1.

Excludes2

Conditions not included here that may be reported separately when present.

  • anxiety depression (mild or not persistent) (F41.8)

Transparency

Source and release

Data release

U.S. ICD-10-CM · FY 2027

Effective date

Oct 1, 2026

Publisher

Vero Scribe Inc.

This reference is generated from Vero’s ICD-10-CM description, hierarchy, and code-note dataset. The visible content and structured data share that source.

Review the CDC/NCHS ICD-10-CM source

Code-specific guidance

Frequently asked questions

What does ICD-10-CM code F34.1 mean?

F34.1 is the FY 2027 U.S. ICD-10-CM code for “Dysthymic disorder.”

Is F34.1 a billable or specific ICD-10-CM code?

Yes. In the FY 2027 reference data used on this page, F34.1 has no child codes and is presented as a billable/specific code. Always confirm the active code set and payer requirements before use.

Where is F34.1 located in ICD-10-CM?

F34.1 is listed in Chapter 5, Mental, Behavioral and Neurodevelopmental disorders (F01-F99), within Mood [affective] disorders (F30-F39) (F30–F39), under category F34, Persistent mood [affective] disorders.

What coding notes are listed for F34.1?

Its listed inclusion terms are Depressive neurosis; Depressive personality disorder; Dysthymia; Neurotic depression; Persistent anxiety depression; Persistent depressive disorder. No code-first instruction is listed. No Excludes1 note is listed. Excludes2 notes: anxiety depression (mild or not persistent) (F41.8).

Keep exploring

Related F34 codes

F34.0

Cyclothymic disorder

F34.8

Other persistent mood [affective] disorders

F34.9

Persistent mood [affective] disorder, unspecified

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