ICD-10-CM 2027
ICD-10 code for somatoform disorder
From the official ICD-10-CM alphabetic index entry “Disorder (of) › somatoform”. Page updated September 29, 2026.
About coding somatoform disorder
The ICD-10-CM code for somatoform disorder is F45.9 (Somatoform disorder, unspecified). The official index lists 4 more specific codes, so check the documentation for details such as type, cause, site or severity before settling on F45.9.
Within F45, choose F45.9 (Somatoform disorder, unspecified) 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 other somatoform disorders (F45.8).
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.
More specific somatoform disorder codes (official index)
Common questions about somatoform disorder ICD-10 codes
What is the ICD-10 code for somatoform disorder?
- F45.9 — Somatoform disorder, unspecified. More specific codes apply when the documentation supports them: F45.41, F45.0, F45.8, F45.1.
What is the ICD-10 code for pain somatoform disorder?
- F45.41 — Pain disorder exclusively related to psychological factors.
What is the ICD-10 code for somatization somatoform disorder?
- F45.0 — Somatization disorder.
What is the ICD-10 code for undifferentiated somatoform disorder?
- F45.1 — Undifferentiated somatoform disorder.
Is F45.9 billable?
- Yes. F45.9 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can F45.9 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict F45.9 as a principal diagnosis.
Is F45.9 a CC or MCC?
- No. F45.9 is neither a CC nor an MCC under MS-DRG v44.0.