ICD-10 · PDGM grouping
N25 Disorders resulting from impaired renal tubular function
All 5 codes in the N25 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
4
Cannot lead a claim
1
What CMS assigns to N25
4 of the 5 codes group to MMTA - Gastrointestinal tract and Genitourinary system; 1 is assigned no clinical group. 1 of the 5 counts toward the Other disorders of the kidney and ureter, excluding chronic kidney disease and ESRD comorbidity subgroup; 4 are assigned none. 4 of the 5 can lead a claim.
- Other disorders of the kidney and ureter, excluding chronic kidney disease and ESRD: counts toward the high comorbidity tier only in an interaction pair.
Every code in N25
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 |
|---|---|---|---|---|
| N25.0 | Renal osteodystrophy | Can lead a claim | J | None |
| N25.1 | Nephrogenic diabetes insipidus | Can lead a claim | J | Other disorders of the kidney and ureter, excluding chronic kidney disease and ESRD |
| N25.8 Other disorders resulting from impaired renal tubular function | ||||
| N25.81 | Secondary hyperparathyroidism of renal origin | Can lead a claim | J | None |
| N25.89 | Other disorders resulting from impaired renal tubular functionCMS: Oth disorders resulting from impaired renal tubular function | Can lead a claim | J | None |
| N25.9 | Disorder resulting from impaired renal tubular function, unspecifiedCMS: Disorder rslt from impaired renal tubular function, unsp | 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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