ICD-10 · PDGM grouping
Z49 Encounter for care involving renal dialysis
All 4 codes in the Z49 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
4
Can lead a claim
0
Cannot lead a claim
4
What CMS assigns to Z49
None of the 4 codes is assigned a clinical group. None of the 4 is assigned a comorbidity subgroup. None can lead a claim.
Every code in Z49
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 |
|---|---|---|---|---|
| Z49.0 Preparatory care for renal dialysis | ||||
| Z49.01 | Encounter for fitting and adjustment of extracorporeal dialysis catheterCMS: Encounter for fit/adjst of extracorporeal dialysis catheter | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| Z49.02 | Encounter for fitting and adjustment of peritoneal dialysis catheterCMS: Encounter for fit/adjst of peritoneal dialysis catheter | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| Z49.3 Encounter for adequacy testing for dialysis | ||||
| Z49.31 | Encounter for adequacy testing for hemodialysis | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| Z49.32 | Encounter for adequacy testing for peritoneal dialysis | 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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