F42.3 – Hoarding disorder

ICD-10-CM 2027 diagnosis code · Anxiety, dissociative, stress-related, somatoform and other nonpsychotic mental disorders

Billable code

ICD-10-CM code F42.3

Code: F42.3 (claims format: F423)
Description: Hoarding disorder
Billable: Yes – valid for HIPAA-covered transactions
Valid for: Dates of service October 1, 2026 – September 30, 2027 (FY2027)
Chapter: 5. Mental, Behavioral and Neurodevelopmental disorders (F01-F99)
Block: F40-F48 Anxiety, dissociative, stress-related, somatoform and other nonpsychotic mental disorders
Parent codes: F42

Notes inherited from parent codes

Instructional notes at a category or block level apply to every code below it.

F42 – Obsessive-compulsive disorder

Excludes2 (not included here):

obsessive-compulsive personality (disorder) (F60.5)
obsessive-compulsive symptoms occurring in depression (F32.-, F33.-)
obsessive-compulsive symptoms occurring in schizophrenia (F20.-)

Index terms for F42.3

Entries in the ICD-10-CM alphabetic index that lead to this code:

Disorder, hoarding

Related codes in F42

F42.2 – Mixed obsessional thoughts and actsBillable
F42.4 – Excoriation (skin-picking) disorderBillable
F42.8 – Other obsessive-compulsive disorderBillable
F42.9 – Obsessive-compulsive disorder, unspecifiedBillable

Frequently asked questions

What is ICD-10 code F42.3?

F42.3 is the ICD-10-CM code for hoarding disorder, in the block F40-F48 (Anxiety, dissociative, stress-related, somatoform and other nonpsychotic mental disorders).

Is F42.3 a billable code?

Yes. F42.3 is a billable/specific code that can be used to indicate a diagnosis for reimbursement purposes.

What category does F42.3 belong to?

It belongs to category F42 – Obsessive-compulsive disorder.

Source: CDC/NCHS ICD-10-CM FY2027 code files, tabular list and index. Reference only – code assignment must follow the official ICD-10-CM guidelines and documentation in the medical record.