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ICD-10-CM 2027 diagnosis code

F45.8Other somatoform disorders

✓ Billable / specific

F45.8 is a valid, billable ICD-10-CM code for other somatoform disorders. It can be reported on claims for dates of service from October 1, 2026 – September 30, 2027.

Looking up by condition? See ICD-10 code for Globus, ICD-10 code for Aerophagy, ICD-10 code for Pneumophagia, ICD-10 code for Pseudocyesis.

Code unchanged since ICD-10-CM took effect on October 1, 2015. Source: official FY2027 ICD-10-CM release from CDC/NCHS and CMS. Page updated September 29, 2026. About our data

About F45.8

F45.8 is the ICD-10-CM diagnosis code for other somatoform disorders. It belongs to category F45 (somatoform disorders), block F40-F48 (anxiety, dissociative, stress-related, somatoform and other nonpsychotic mental disorders) and chapter 5 (mental, Behavioral and Neurodevelopmental disorders). It is billable, so it can be reported on its own for dates of service from October 1, 2026 through September 30, 2027.

Within F45, choose F45.8 (Other somatoform disorders) only when documentation doesn't support a more specific option: Somatization disorder (F45.0), Undifferentiated somatoform disorder (F45.1), hypochondriacal disorders (F45.2), pain disorders related to psychological factors (F45.4) and somatoform disorder, unspecified (F45.9).

Don't report F45.8 together with the conditions in its Excludes1 note: sleep related teeth grinding (G47.63).

It is not a CC or MCC, so as a secondary diagnosis it doesn't change the MS-DRG severity level.

In MS-DRG v44.0, it is part of the grouping logic for DRG 882 (Neuroses Except Depressive, relative weight 0.9952), in MDC 19 (Mental Diseases and Disorders), as a principal or secondary diagnosis. The DRG a claim lands in depends on the principal diagnosis, procedures and any CC/MCC secondary diagnoses.

It has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.

Before ICD-10, this condition was coded in ICD-9-CM as 300.89 (other somatoform disorders), 306.0 (musculoskeletal malfunction arising from mental factors), 306.1 (respiratory malfunction arising from mental factors) and 9 more.

Coding notes

Applicable toConditions and synonyms classified to this code
  • Psychogenic dysmenorrhea
  • Psychogenic dysphagia, including 'globus hystericus'
  • Psychogenic pruritus
  • Psychogenic torticollis
  • Somatoform autonomic dysfunction
  • Teeth grinding
Excludes1Not coded here — never report together with this code
  • sleep related teeth grinding (G47.63)

Notes that apply from higher levels

Instructions written at a parent level also apply to F45.8.

› From F45 Somatoform disorders
Excludes2
  • 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)

Broader instructions also apply from Chapter 5: Mental, Behavioral and Neurodevelopmental disorders.

Alphabetic index entries

40 entries

Terms in the official ICD-10-CM index that lead to F45.8.

Codes whose notes reference F45.8

MS-DRG v44.0 grouping

All DRGs →

Inpatient MS-DRGs this diagnosis can group to, as the principal or a secondary diagnosis, depending on the rest of the claim.

MDC 19 · Mental Diseases and Disorders

ICD-9-CM equivalent

Converter →
  • 300.89Other somatoform disordersapproximate
  • 306.0Musculoskeletal malfunction arising from mental factorsapproximate
  • 306.1Respiratory malfunction arising from mental factorsapproximate
  • 306.2Cardiovascular malfunction arising from mental factorsapproximate
  • 306.3Skin disorder arising from mental factorsapproximate
  • 306.4Gastrointestinal malfunction arising from mental factorsapproximate
  • 306.50Psychogenic genitourinary malfunction, unspecifiedapproximate
  • 306.52Psychogenic dysmenorrheaapproximate
  • 306.53Psychogenic dysuriaapproximate
  • 306.59Other genitourinary malfunction arising from mental factorsapproximate
  • 306.7Disorder of organs of special sense arising from mental factorsapproximate
  • 306.8Other specified psychophysiological malfunctionapproximate

From the CMS 2018 General Equivalence Mappings (GEMs), the final GEMs release.

Code history

  1. 2016
  2. 2017
  3. 2018
  4. 2019
  5. 2020
  6. 2021
  7. 2022
  8. 2023
  9. 2024
  10. 2025
  11. 2026
  12. 2027
  • FY2016 (effective 10/1/2015): Added (first year of ICD-10-CM)
  • No changes since FY2016.

Common questions about F45.8

Is F45.8 billable?

Yes. F45.8 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).

Can F45.8 be used as a principal diagnosis?

Yes. The Medicare Code Editor doesn't restrict F45.8 as a principal diagnosis.

Is F45.8 a CC or MCC?

No. F45.8 is neither a CC nor an MCC under MS-DRG v44.0.

What DRG does F45.8 group to?

F45.8 is used in the MS-DRG v44.0 logic for MS-DRG 882 (Neuroses Except Depressive). Which one applies depends on whether it is the principal diagnosis and on the rest of the claim.

What is the ICD-9 code for F45.8?

The CMS General Equivalence Mappings map F45.8 to ICD-9-CM 300.89, 306.0, 306.1, 306.2 and 8 more.