ICD-10 · PDGM grouping
F43 Reaction to severe stress, and adjustment disorders
All 14 codes in the F43 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
14
Can lead a claim
13
Cannot lead a claim
1
What CMS assigns to F43
13 of the 14 codes group to Behavioral Health; 1 is assigned no clinical group. None of the 14 is assigned a comorbidity subgroup. 13 of the 14 can lead a claim.
Every code in F43
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 |
|---|---|---|---|---|
| F43.0 | Acute stress reaction | Can lead a claim | F | None |
| F43.1 Post-traumatic stress disorder (PTSD) | ||||
| F43.10 | Post-traumatic stress disorder, unspecified | Can lead a claim | F | None |
| F43.11 | Post-traumatic stress disorder, acute | Can lead a claim | F | None |
| F43.12 | Post-traumatic stress disorder, chronic | Can lead a claim | F | None |
| F43.2 Adjustment disorders | ||||
| F43.20 | Adjustment disorder, unspecified | Can lead a claim | F | None |
| F43.21 | Adjustment disorder with depressed mood | Can lead a claim | F | None |
| F43.22 | Adjustment disorder with anxiety | Can lead a claim | F | None |
| F43.23 | Adjustment disorder with mixed anxiety and depressed mood | Can lead a claim | F | None |
| F43.24 | Adjustment disorder with disturbance of conduct | Can lead a claim | F | None |
| F43.25 | Adjustment disorder with mixed disturbance of emotions and conductCMS: Adjustment disorder w mixed disturb of emotions and conduct | Can lead a claim | F | None |
| F43.29 | Adjustment disorder with other symptoms | Can lead a claim | F | None |
| F43.8 Other reactions to severe stress | ||||
| F43.81 | Prolonged grief disorder | Can lead a claim | F | None |
| F43.89 | Other reactions to severe stress | Can lead a claim | F | None |
| F43.9 | Reaction to severe stress, unspecified | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
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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