ICD-10 · PDGM grouping
I08 Multiple valve diseases
All 6 codes in the I08 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
6
Can lead a claim
6
Cannot lead a claim
0
What CMS assigns to I08
All 6 codes group to MMTA - Cardiac and Circulatory. All 6 count toward the Valve Disorders comorbidity subgroup. Every code can lead a claim.
- Valve Disorders: counts toward the high comorbidity tier only in an interaction pair.
Every code in I08
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 |
|---|---|---|---|---|
| I08.0 | Rheumatic disorders of both mitral and aortic valves | Can lead a claim | H | Valve Disorders |
| I08.1 | Rheumatic disorders of both mitral and tricuspid valves | Can lead a claim | H | Valve Disorders |
| I08.2 | Rheumatic disorders of both aortic and tricuspid valves | Can lead a claim | H | Valve Disorders |
| I08.3 | Combined rheumatic disorders of mitral, aortic and tricuspid valvesCMS: Comb rheumatic disord of mitral, aortic and tricuspid valves | Can lead a claim | H | Valve Disorders |
| I08.8 | Other rheumatic multiple valve diseases | Can lead a claim | H | Valve Disorders |
| I08.9 | Rheumatic multiple valve disease, unspecified | Can lead a claim | H | Valve 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.
The monthly home health regs digest
What CMS changed, what's due next, and what to do about it — one email a month, no fluff. Read the first issue