Coding and coverage · ICD-10-CM

F42 Obsessive-compulsive disorder

Not billable (header)Chapter 5

Report one of the more specific codes below.

Check coverage with this diagnosis

Codes under this one

  • F42.2 Mixed obsessional thoughts and acts
  • F42.3 Hoarding disorder
  • F42.4 Excoriation (skin-picking) disorder
  • F42.8 Other obsessive-compulsive disorder
  • F42.9 Obsessive-compulsive disorder, unspecified

Instructional notes

Chapter 5

Excludes2Not included here: the patient may have both; report both when both are present.
  • symptoms, signs and abnormal clinical laboratory findings, not elsewhere classified (R00-R99)
Includes
  • disorders of psychological development

This code

Excludes2Not included here: the patient may have both; report both when both are present.
  • obsessive-compulsive personality (disorder) (F60.5)
  • obsessive-compulsive symptoms occurring in depression (F32.-, F33.-)
  • obsessive-compulsive symptoms occurring in schizophrenia (F20.-)

Chapter 5: Mental, Behavioral and Neurodevelopmental disorders · F40-F48 Anxiety, dissociative, stress-related, somatoform and other nonpsychotic mental disorders (F40-F48)

Source: ICD-10-CM FY 2027 code descriptions and tabular list (CMS and CDC National Center for Health Statistics), effective 2026-10-01 through 2027-09-30 · CMS ICD-10 files. HCC mapping: CMS-HCC V28, payment year 2027. As of 2026-11-04.

Coverage and payment depend on the claim details; confirm with the Medicare Administrative Contractor.