2026 ICD-10-CM Diagnosis Code F45.0Somatization disorder

ICD-10-CM Codes›F01–F99›F40-F48›F45

ICD-10-CM F45.0
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

F45.0 is a billable ICD-10-CM diagnosis code for somatization disorder. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026). Coders also document this condition as Briquet's syndrome. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Somatic disorders.

Code Identity

ICD-10-CM Code
F45.0
Billable Status
Yes — Valid for Submission
Code Describes
Somatization disorder
Short Description
Somatization disorder
Same as the full description in the CMS dataset.
Parent Code
F45
Somatoform disorders

Code Classification

ChapterF01–F99Mental and behavioural disorders
SectionF40-F48Anxiety, dissociative, stress-related, somatoform and other nonpsychotic mental disorders
CategoryF45Somatoform disorders
This CodeF45.0Somatization disorder

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Briquet's syndrome
  • Polysomatizing disorder
  • Somatization disorder

Tabular List NotesGuidance

Coding notes and annotation back-references applicable to this code.

Inclusion Terms

  • Briquet's disorder
  • Multiple psychosomatic disorder

Index to Diseases and InjuriesGuidance

Alphabetical index entries that point to this code.

External Cause of Injuries IndexGuidance

References for this code in the External Cause of Injuries Index.

    • Briquet's disorder or syndrome
    • Disorder(of)
      • Briquet's
    • Disorder(of)
      • psychosomatic NOS
        • multiple
    • Disorder(of)
      • somatization
    • Disorder(of)
      • somatoform
        • somatization (multiple) (long-lasting)

Clinical ClassificationClinical

AHRQ’s CCSR groups this code into broader clinical categories.

CCSR MBD011
Somatic disorders
Default principal diagnosis: inpatient Yes · outpatient Yes

Clinical InformationClinical

  • Somatoform Disorders

    disorders having the presence of physical symptoms that suggest a general medical condition but that are not fully explained by another medical condition, by the direct effects of a substance, or by another mental disorder. the medically unexplained symptoms must cause clinically significant distress or impairment in social, occupational, or other areas of functioning. in contrast to factitious disorders and malingering, the physical symptoms are not under voluntary control. (apa, dsm-v)

Patient EducationClinical

Mental Disorders

Mental disorders (or mental illnesses) are conditions that affect your thinking, feeling, mood, and behavior. They may happen over a short period of time or come and go. Some can be chronic (long-lasting). They can affect your ability to relate to others and function each day..

The full article covers:

  • What are mental disorders?
  • What are some types of mental disorders?
  • What causes mental disorders?
  • Who is at risk for mental disorders?
  • How are mental disorders diagnosed?
  • What are the treatments for mental disorders?

Read the full article at MedlinePlus

Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.

Convert F45.0 to ICD-9-CMHistory

The closest ICD-9-CM equivalents under the General Equivalence Mappings.

ICD-9-CM
300.81 Somatization disorder
Exact Match The mapping is direct, with no qualifiers.

Code HistoryHistory

FY 2016AddedAdded to the ICD-10-CM code setEffective October 1, 2015, the first year of ICD-10-CM.
FY 2017–2025No changes
FY 2026CurrentCurrent code set, no changesEffective October 1, 2025 through September 30, 2026.

Questions About F45.0Overview

Is F45.0 (Somatoform disorders) a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report somatization disorder on HIPAA-covered claims from October 1, 2025 through September 30, 2026.

What is the ICD-9 equivalent of F45.0?

Under the General Equivalence Mappings, somatization disorder converts to ICD-9-CM 300.81 (somatization disorder). The mapping is a direct match.

Footnotes

[1] Chronic - a chronic condition code indicates a condition lasting 12 months or longer and its effect on the patient based on one or both of the following criteria:

  • The condition results in the need for ongoing intervention with medical products,treatment, services, and special equipment
  • The condition places limitations on self-care, independent living, and social interactions.