2027 ICD-10-CM Diagnosis Code F45.8Other somatoform disorders

ICD-10-CM Codes›F01–F99›F40-F48›F45

ICD-10-CM F45.8
CMSSource: CMS FY 2027 ICD-10-CM dataset · Effective Oct 1, 2026 – Sep 30, 2027

F45.8 is a billable ICD-10-CM diagnosis code for other somatoform disorders. It is valid on HIPAA claims for fiscal year 2027 (October 1, 2026 through September 30, 2027) and groups to MS-DRG 882. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Somatic disorders.

F45.8 does not risk-adjust for Medicare Advantage under the CMS-HCC V28 model. It still risk-adjusts in the RxHCC Part D (V08) category 133 for payment year 2027.

Code Identity

ICD-10-CM Code
F45.8
Billable Status
Yes — Valid for Submission
Code Describes
Other somatoform disorders
Short Description
Other somatoform disorders
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 CodeF45.8Other somatoform disorders

Medicare Risk Adjustment (HCC)Billing

F45.8 does not risk-adjust for Medicare Advantage under the CMS-HCC V28 model, but it maps to payment categories in the other CMS models shown below.

CMS-HCC V28 (Medicare Advantage Payment Model)
Not mapped
no payment category in the model that pays 100% of MA risk scores
Prior Model (CMS-HCC V24)
Not mapped under V24
this diagnosis newly risk-adjusts under the V28 model
Part D (RxHCC)
RxHCC 133 — Anxiety and Other Psychiatric Disorders
also risk-adjusts in the Part D prescription drug model (V08)

Source: CMS Payment Year 2027 risk adjustment mappings and model software. Weights are relative factors, not dollar amounts; a beneficiary's total RAF also includes demographics and interactions. Browse all CMS-HCC categories.

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Adult rumination syndrome of ingested food
  • Aerophagy
  • Air hunger
  • Anxiety hyperventilation
  • Bodily distress disorder
  • Brain fag
  • Breathing pattern disorder
  • Bruxism
  • Cheshire cat syndrome
  • Dermatological non-disease
  • Dysesthesia
  • Dysmenorrhea
  • Dysuria
  • Finding of sensation of tooth
  • Finding of yawning
  • Functional aerophagy in childhood
  • Functional dysphagia
  • Ghost sickness
  • Hiccoughs
  • Hyperventilation
  • Mild bodily distress disorder
  • Moderate bodily distress disorder
  • Nervous diarrhea
  • Neurocirculatory asthenia
  • Occlusal dysesthesia
  • Pain of uterus
  • Physiologic pseudocyesis
  • Psychogenic air hunger
  • Psychogenic alopecia
  • Psychogenic constipation
  • Psychogenic cough
  • Psychogenic diarrhea
  • Psychogenic disorder of the genitourinary system
  • Psychogenic dysmenorrhea
  • Psychogenic dyspepsia
  • Psychogenic dysuria
  • Psychogenic formication
  • Psychogenic hiccough
  • Psychogenic hyperventilation
  • Psychogenic pruritus
  • Psychogenic pylorospasm
  • Psychogenic sensory disturbance of skin
  • Psychogenic skin disease
  • Psychogenic symptom of special sense organ
  • Psychogenic torticollis
  • Psychogenic urticaria
  • Psychogenic vocal cord dysfunction
  • Psychogenic voice disorder
  • Psychogenic yawning
  • Psychological pseudocyesis
  • Psychosomatic musculoskeletal symptoms
  • Pylorospasm
  • Root work
  • Rumination disorder
  • Severe bodily distress disorder
  • Somatoform autonomic dysfunction
  • Somatoform autonomic dysfunction of gastrointestinal tract
  • Somatoform autonomic dysfunction of respiratory tract
  • Yawning

Instructional NotesGuidance

Instructions from the official ICD-10-CM Tabular List that apply to F45.8: its own notes plus those printed at F45 and Chapter 5. A note printed at a category, block or chapter applies to every code under it.

Includes

Further defines, or gives examples of, the content of the category.

From Chapter 5 (F01-F99) Mental and behavioural disorders applies to 872 codes
  • disorders of psychological development

Applicable To

Conditions this code is used for: synonyms of the title or, for "other specified" codes, the conditions assigned to it. The list is not exhaustive.

  • Psychogenic dysmenorrhea
  • Psychogenic dysphagia, including 'globus hystericus'
  • Psychogenic pruritus
  • Psychogenic torticollis
  • Somatoform autonomic dysfunction
  • Teeth grinding

Excludes1

Not coded here: the excluded code is never reported together with this one, unless the two conditions are unrelated.

  • sleep related teeth grinding (G47.63)

Excludes2

Not included here: the excluded condition is not part of this code, but a patient may have both, so both codes may be reported.

From F45 Somatoform disorders applies to 10 codes
  • dissociative and conversion disorders (F44.-)
  • factitious disorders (F68.1-, F68.A)
  • hair-plucking (F63.3)
  • lalling (F80.0)
  • lisping (F80.0)
  • malingering [conscious simulation] (Z76.5)
  • nail-biting (F98.8)
  • psychological or behavioral factors associated with disorders or diseases classified elsewhere (F54)
  • sexual dysfunction, not due to a substance or known physiological condition (F52.-)
  • thumb-sucking (F98.8)
  • tic disorders (in childhood and adolescence) (F95.-)
  • Tourette's syndrome (F95.2)
  • trichotillomania (F63.3)
From Chapter 5 (F01-F99) Mental and behavioural disorders applies to 872 codes
  • symptoms, signs and abnormal clinical laboratory findings, not elsewhere classified (R00-R99)

Source: CMS ICD-10-CM Tabular List. How to read instructional notes.

Referenced in Other NotesGuidance

Instructional notes printed at other codes that name F45.8, its category, or a range that includes it.

Excludes1 26

These codes carry an Excludes1 note naming F45.8: they are not reported together with it, unless the two conditions are unrelated.

  • G24.3 Spasmodic torticollis
    psychogenic torticollis (F45.8)
  • G47.63 Sleep related bruxism
    psychogenic bruxism (F45.8)
  • K30 Functional dyspepsia
    nervous dyspepsia (F45.8)
  • K30 Functional dyspepsia
    neurotic dyspepsia (F45.8)
  • K30 Functional dyspepsia
    psychogenic dyspepsia (F45.8)
  • K31.3 Pylorospasm, not elsewhere classified
    neurotic pylorospasm (F45.8)
  • K31.3 Pylorospasm, not elsewhere classified
    psychogenic pylorospasm (F45.8)
  • K52.9 Noninfective gastroenteritis and colitis, unspecified
    psychogenic diarrhea (F45.8)
  • K59 Other functional intestinal disorders
    psychogenic intestinal disorders (F45.8)
  • L29 Pruritus
    psychogenic pruritus (F45.8)
  • M26.5 Dentofacial functional abnormalities
    bruxism (F45.8)
  • M26.5 Dentofacial functional abnormalities
    teeth-grinding NOS (F45.8)
  • M43.6 Torticollis
    psychogenic torticollis (F45.8)
  • M79 Other and unspecified soft tissue disorders, not elsewhere classified
    psychogenic rheumatism (F45.8)
  • N94.6 Dysmenorrhea, unspecified
    psychogenic dysmenorrhea (F45.8)

11 more Excludes1 notes name this code. Browse all Excludes1 notes.

Excludes2 4

These codes carry an Excludes2 note naming F45.8: its condition is not part of those codes, and both may be reported when the patient has both.

  • K03 Other diseases of hard tissues of teeth
    bruxism (F45.8)
  • K03 Other diseases of hard tissues of teeth
    teeth-grinding NOS (F45.8)
  • F41 Other anxiety disorders
    psychophysiologic disorders (F45.-) names F45.-, which includes this code
  • F93.0 Separation anxiety disorder of childhood
    nonpsychotic mental disorders (F40-F48) names F40-F48, which includes this code

Index to Diseases and InjuriesGuidance

Alphabetical index entries that point to this code.

  • Tumor See Also: Neoplasm, unspecified behavior, by site;

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

  • Aerophagy

    spasmodic swallowing of air.

  • Neurocirculatory Asthenia

    a clinical syndrome characterized by palpitation, shortness of breath, labored breathing, subjective complaints of effort and discomfort, all following slight physical exertion. other symptoms may be dizziness, tremulousness, sweating, and insomnia. neurocirculatory asthenia is most typically seen as a form of anxiety disorder.

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 F45.8 to ICD-9-CMHistory

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

ICD-9-CM
300.89 Somatoform disorders NEC
Approximate The match is approximate rather than exact.
ICD-9-CM
306.0 Psychogen musculskel dis
Approximate The match is approximate rather than exact.
ICD-9-CM
306.1 Psychogenic respir dis
Approximate The match is approximate rather than exact.
ICD-9-CM
306.2 Psychogen cardiovasc dis
Approximate The match is approximate rather than exact.
ICD-9-CM
306.3 Psychogenic skin disease
Approximate The match is approximate rather than exact.
ICD-9-CM
306.4 Psychogenic GI disease
Approximate The match is approximate rather than exact.
ICD-9-CM
306.50 Psychogenic gu dis NOS
Approximate The match is approximate rather than exact.
ICD-9-CM
306.52 Psychogenic dysmenorrhea
Approximate The match is approximate rather than exact.
ICD-9-CM
306.53 Psychogenic dysuria
Approximate The match is approximate rather than exact.
ICD-9-CM
306.59 Psychogenic gu dis NEC
Approximate The match is approximate rather than exact.
ICD-9-CM
306.7 Psychogenic sensory dis
Approximate The match is approximate rather than exact.
ICD-9-CM
306.8 Psychogenic disorder NEC
Approximate The match is approximate rather than exact.

Code HistoryHistory

FY 2016AddedAdded to the ICD-10-CM code setEffective October 1, 2015, the first year of ICD-10-CM.
FY 2017–2026No changes
FY 2027CurrentCurrent code set, no changesEffective October 1, 2026 through September 30, 2027.

Questions About F45.8Overview

What is the ICD-10 code for other somatoform disorders?

The ICD-10-CM code for other somatoform disorders is F45.8 (sometimes written as F458). It is billable on HIPAA-covered claims from October 1, 2026 through September 30, 2027.

Is F45.8 (Somatoform disorders) a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report other somatoform disorders on HIPAA-covered claims from October 1, 2026 through September 30, 2027.

What MS-DRG does F45.8 group to?

When other somatoform disorders is the principal diagnosis on an inpatient stay, it groups to MS-DRG 882 (neuroses Except Depressive), which carries a relative weight of 0.9953. Higher weights mean higher Medicare reimbursement.

Can F45.8 be reported with G47.63?

Not as a rule. The Excludes1 note on F45.8 lists "sleep related teeth grinding (G47.63)". An Excludes1 note means the excluded code is never reported together with this one; the only exception is when the two conditions are unrelated to each other (Official Guidelines, Section I.A.12.a).

What is the ICD-9 equivalent of F45.8?

Under the General Equivalence Mappings, other somatoform disorders converts to ICD-9-CM 300.89 (somatoform disorders NEC), 306.0 (psychogen musculskel dis), and 306.1 (psychogenic respir dis). The mapping is approximate, so confirm the match fits the documentation.

Does F45.8 risk-adjust for Medicare Advantage payment?

Not for Medicare Advantage: F45.8 maps to no category in the CMS-HCC V28 model. It still risk-adjusts in the RxHCC Part D (V08) category 133 (Anxiety and Other Psychiatric Disorders).