ICD-10 · PDGM grouping
F42 Obsessive-compulsive disorder
All 5 codes in the F42 family, with the PDGM clinical group, comorbidity subgroup and primary-position rule CMS assigns, read from the CMS grouper crosswalk v07.2.26 and the CDC FY2027 code file.
Codes in family
5
Can lead a claim
5
Cannot lead a claim
0
What CMS assigns to F42
All 5 codes group to Behavioral Health. 4 of the 5 count toward the Phobias, Other Anxiety and Obsessive compulsive disorders comorbidity subgroup; 1 is assigned none. Every code can lead a claim.
- Phobias, Other Anxiety and Obsessive compulsive disorders
Every code in F42
Descriptions are CDC’s FY2027 wording; where CMS’s grouper abbreviates one, its form is shown beneath.
| Code | Description | Primary position | Clinical group | Comorbidity subgroup |
|---|---|---|---|---|
| F42.2 | Mixed obsessional thoughts and acts | Can lead a claim | F | Phobias, Other Anxiety and Obsessive compulsive disorders |
| F42.3 | Hoarding disorder | Can lead a claim | F | Phobias, Other Anxiety and Obsessive compulsive disorders |
| F42.4 | Excoriation (skin-picking) disorder | Can lead a claim | F | None |
| F42.8 | Other obsessive-compulsive disorder | Can lead a claim | F | Phobias, Other Anxiety and Obsessive compulsive disorders |
| F42.9 | Obsessive-compulsive disorder, unspecified | Can lead a claim | F | Phobias, Other Anxiety and Obsessive compulsive disorders |
Sources: CMS HH PPS Grouper Software v07.2.26, effective 2026-10-01, for the clinical group, comorbidity subgroup, code-first conventions and primary-position flags; CDC NCHS ICD-10-CM FY2027 code descriptions for the family title and code wording. This is the crosswalk Medicare runs a claim through. Grouping also depends on admission source, timing, the OASIS functional items and the rest of the diagnosis list.
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