ICD-10 · PDGM grouping
N25-N29 — Other disorders of kidney and ureter
Every ICD-10-CM code in this range and the PDGM clinical group CMS assigns to it, read from the CMS grouper crosswalk v07.2.26.
Codes in range
22
No clinical group
5
A period cannot be grouped from these.
Barred as primary
0
CMS rejects these in the primary position.
Where these codes group
12 of the 22 codes in N25-N29 group to MMTA - Gastrointestinal tract and Genitourinary system, but the range is not uniform — it spreads across 2 clinical groups. A further 5 are assigned no clinical group at all, which means a 30-day period cannot be grouped from them.
Code families in N25-N29
One page per three-character family: every code in it, whether it can lead a claim, its clinical group and comorbidity subgroup.
Every code in N25-N29
Descriptions are CMS’s own, abbreviated as CMS abbreviates them.
| Code | Description | Clinical group | Primary position |
|---|---|---|---|
| N250 | Renal osteodystrophy | J | Can lead a claim |
| N251 | Nephrogenic diabetes insipidus | J | Can lead a claim |
| N2581 | Secondary hyperparathyroidism of renal origin | J | Can lead a claim |
| N2589 | Oth disorders resulting from impaired renal tubular function | J | Can lead a claim |
| N259 | Disorder rslt from impaired renal tubular function, unsp | None | Cannot lead a claim |
| N261 | Atrophy of kidney (terminal) | J | Can lead a claim |
| N262 | Page kidney | A | Can lead a claim |
| N269 | Renal sclerosis, unspecified | None | Cannot lead a claim |
| N270 | Small kidney, unilateral | A | Can lead a claim |
| N271 | Small kidney, bilateral | A | Can lead a claim |
| N279 | Small kidney, unspecified | None | Cannot lead a claim |
| N280 | Ischemia and infarction of kidney | J | Can lead a claim |
| N281 | Cyst of kidney, acquired | J | Can lead a claim |
| N2881 | Hypertrophy of kidney | A | Can lead a claim |
| N2882 | Megaloureter | J | Can lead a claim |
| N2883 | Nephroptosis | A | Can lead a claim |
| N2884 | Pyelitis cystica | J | Can lead a claim |
| N2885 | Pyeloureteritis cystica | J | Can lead a claim |
| N2886 | Ureteritis cystica | J | Can lead a claim |
| N2889 | Other specified disorders of kidney and ureter | J | Can lead a claim |
| N289 | Disorder of kidney and ureter, unspecified | None | Cannot lead a claim |
| N29 | Oth disorders of kidney and ureter in diseases classd elswhr | None | Cannot lead a claim |
Source: CMS HH PPS Grouper Software v07.2.26, effective 2026-10-01. 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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