U.S. ICD-10-CM · FY 2027

F43.1 ICD-10-CM Code: Post-traumatic stress disorder (PTSD)

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

Code definition

Official description

F43.1

Post-traumatic stress disorder (PTSD)

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

Classification

Where F43.1 sits

  1. 1

    Chapter 5

    Mental, Behavioral and Neurodevelopmental disorders (F01-F99)

  2. 2

    Section

    Anxiety, dissociative, stress-related, somatoform and other nonpsychotic mental disorders (F40-F48)

  3. 3

    Category F43

    Reaction to severe stress, and adjustment disorders

  4. 4

    Code F43.1

    Post-traumatic stress disorder (PTSD)

More specific choices

Codes under F43.1

F43.1 is a non-billable category. Choose the child code that best matches the documented diagnosis.

Documentation details

Notes for this code

Inclusion terms

  • Traumatic neurosis

Code first

No “code first” instruction is listed for F43.1.

Use additional code

No “use additional code” instruction is listed for F43.1.

Excludes1

Conditions that should not be reported together with this code.

No Excludes1 note is listed for F43.1.

Excludes2

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

No Excludes2 note is listed for F43.1.

Transparency

Source and release

Data release

U.S. ICD-10-CM · FY 2027

Effective date

Oct 1, 2026

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 F43.1 mean?

F43.1 is the FY 2027 U.S. ICD-10-CM code for “Post-traumatic stress disorder (PTSD).”

Is F43.1 a billable or specific ICD-10-CM code?

No. F43.1 has more specific child codes in the FY 2027 reference data. Select the code that matches the documentation and confirm the active code set and payer requirements.

Where is F43.1 located in ICD-10-CM?

F43.1 is listed in Chapter 5, Mental, Behavioral and Neurodevelopmental disorders (F01-F99), within Anxiety, dissociative, stress-related, somatoform and other nonpsychotic mental disorders (F40-F48) (F40–F48), under category F43, Reaction to severe stress, and adjustment disorders.

What coding notes are listed for F43.1?

Its listed inclusion terms are Traumatic neurosis. No code-first instruction is listed. No Excludes1 note is listed. No Excludes2 note is listed.

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