ICD-10-CM 2027
ICD-10 code for Hoarding disorder
From the official ICD-10-CM alphabetic index entry “Disorder (of) › hoarding”. Page updated September 29, 2026.
About coding Hoarding disorder
The ICD-10-CM code for Hoarding disorder is F42.3 (Hoarding disorder).
Within F42 (obsessive-compulsive disorder), F42.3 is specifically for Hoarding disorder. Related codes cover mixed obsessional thoughts and acts (F42.2), Excoriation (skin-picking) disorder (F42.4), other obsessive-compulsive disorder (F42.8) and unspecified (F42.9).
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.
Common questions about Hoarding disorder ICD-10 codes
What is the ICD-10 code for Hoarding disorder?
- F42.3 — Hoarding disorder.
Is F42.3 billable?
- Yes. F42.3 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can F42.3 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict F42.3 as a principal diagnosis.
Is F42.3 a CC or MCC?
- No. F42.3 is neither a CC nor an MCC under MS-DRG v44.0.