October 1 update. Our PDGM and ICD-10 tools now use the FY2027 code set: 190 codes added, 30 deleted, and no existing code changed clinical group.

See what changed

ICD-10 · PDGM grouping

N29 Other disorders of kidney and ureter in diseases classified elsewhere

The one code in the N29 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.

ICD-10-CM FY2027 · CMS grouper v07.2.26

Codes in family

1

Can lead a claim

0

Cannot lead a claim

1

What CMS assigns to N29

This code is assigned no clinical group. It counts toward the Other disorders of the kidney and ureter, excluding chronic kidney disease and ESRD comorbidity subgroup. It cannot lead a claim. CMS attaches a code-first note to it.

  • Other disorders of the kidney and ureter, excluding chronic kidney disease and ESRD: counts toward the high comorbidity tier only in an interaction pair.

Code first

CMS grouper convention 139. Code first:

  • amyloidosis (E85.-)
  • nephrocalcinosis (E83.59)
  • schistosomiasis (B65.0-B65.9)
  • underlying disease, such as:

The N29 code

Descriptions are CDC’s FY2027 wording; where CMS’s grouper abbreviates one, its form is shown beneath.

CodeDescriptionPrimary positionClinical groupComorbidity subgroup
N29Other disorders of kidney and ureter in diseases classified elsewhereCMS: Oth disorders of kidney and ureter in diseases classd elswhrCannot lead a claimManifestation code is not reportable as principal diagnosisNoneOther disorders of the kidney and ureter, excluding chronic kidney disease and ESRD

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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