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

I89 Other noninfective disorders of lymphatic vessels and lymph nodes

All 4 codes in the I89 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

4

Can lead a claim

3

Cannot lead a claim

1

What CMS assigns to I89

3 of the 4 codes group to MMTA - Cardiac and Circulatory (2) and Wound (1); 1 is assigned no clinical group. 1 of the 4 counts toward the Varicose Veins and Lymphedema comorbidity subgroup; 3 are assigned none. 3 of the 4 can lead a claim.

  • Varicose Veins and Lymphedema: can award the low comorbidity tier as a secondary diagnosis.

Every code in I89

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

CodeDescriptionPrimary positionClinical groupComorbidity subgroup
I89.0Lymphedema, not elsewhere classifiedCan lead a claimCVaricose Veins and Lymphedema
I89.1LymphangitisCan lead a claimHNone
I89.8Other specified noninfective disorders of lymphatic vessels and lymph nodesCMS: Oth noninfective disorders of lymphatic vessels and nodesCan lead a claimHNone
I89.9Noninfective disorder of lymphatic vessels and lymph nodes, unspecifiedCMS: Noninfective disorder of lymphatic vessels and nodes, unspCannot lead a claimPrincipal diagnosis not assigned to a clinical groupNoneNone

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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