F42.9 ICD-10-CM Code: Obsessive-compulsive disorder, unspecified
A clear reference for the official code description, hierarchy, and related coding information from the FY 2027 U.S. release.
Code definition
Official description
F42.9Obsessive-compulsive disorder, unspecified
ICD-10-CM diagnosis code · United States clinical modification
Classification
Where F42.9 sits
- 1
Chapter 5
Mental, Behavioral and Neurodevelopmental disorders (F01-F99)
- 2
Section
Anxiety, dissociative, stress-related, somatoform and other nonpsychotic mental disorders (F40-F48)
- 3
Category F42
Obsessive-compulsive disorder
- 4
Code F42.9
Obsessive-compulsive disorder, unspecified
Documentation details
Notes for this code
Inclusion terms
No inclusion terms are listed for F42.9.
Code first
No “code first” instruction is listed for F42.9.
Use additional code
No “use additional code” instruction is listed for F42.9.
Excludes1
Conditions that should not be reported together with this code.
No Excludes1 note is listed for F42.9.
Excludes2
Conditions not included here that may be reported separately when present.
No Excludes2 note is listed for F42.9.
Transparency
Source and release
This reference is generated from Vero’s ICD-10-CM description, hierarchy, and code-note dataset. The visible content and structured data share that source.
Review the CDC/NCHS ICD-10-CM sourceCode-specific guidance
Frequently asked questions
What does ICD-10-CM code F42.9 mean?
F42.9 is the FY 2027 U.S. ICD-10-CM code for “Obsessive-compulsive disorder, unspecified.”
Is F42.9 a billable or specific ICD-10-CM code?
Yes. In the FY 2027 reference data used on this page, F42.9 has no child codes and is presented as a billable/specific code. Always confirm the active code set and payer requirements before use.
Where is F42.9 located in ICD-10-CM?
F42.9 is listed in Chapter 5, Mental, Behavioral and Neurodevelopmental disorders (F01-F99), within Anxiety, dissociative, stress-related, somatoform and other nonpsychotic mental disorders (F40-F48) (F40–F48), under category F42, Obsessive-compulsive disorder.
What coding notes are listed for F42.9?
No inclusion terms are listed for F42.9 in this reference record. No code-first instruction is listed. No Excludes1 note is listed. No Excludes2 note is listed.
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