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

D64 Other anemias

All 8 codes in the D64 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

8

Can lead a claim

7

Cannot lead a claim

1

What CMS assigns to D64

7 of the 8 codes group to MMTA - Infectious Disease, Neoplasms, and Blood-Forming Diseases; 1 is assigned no clinical group. All 8 count toward the Hemolytic, Aplastic, and Other Anemias comorbidity subgroup. 7 of the 8 can lead a claim. CMS attaches a code-first note to 2 of the 8.

  • Hemolytic, Aplastic, and Other Anemias: can award the low comorbidity tier as a secondary diagnosis.

Code first

CMS grouper convention 12, on D64.1. Code first:

  • underlying disease

CMS grouper convention 13, on D64.2. Code first:

  • poisoning due to drug or toxin, if applicable (T36-T65 with fifth or sixth character 1-4)

Every code in D64

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

CodeDescriptionPrimary positionClinical groupComorbidity subgroup
D64.0Hereditary sideroblastic anemiaCan lead a claimKHemolytic, Aplastic, and Other Anemias
D64.1Secondary sideroblastic anemia due to diseaseCannot lead a claimManifestation code is not reportable as principal diagnosisNoneHemolytic, Aplastic, and Other Anemias
D64.2Secondary sideroblastic anemia due to drugs and toxinsCan lead a claim, code first appliesKHemolytic, Aplastic, and Other Anemias
D64.3Other sideroblastic anemiasCan lead a claimKHemolytic, Aplastic, and Other Anemias
D64.4Congenital dyserythropoietic anemiaCan lead a claimKHemolytic, Aplastic, and Other Anemias
D64.8 Other specified anemias
D64.81Anemia due to antineoplastic chemotherapyCan lead a claimKHemolytic, Aplastic, and Other Anemias
D64.89Other specified anemiasCan lead a claimKHemolytic, Aplastic, and Other Anemias
D64.9Anemia, unspecifiedCan lead a claimKHemolytic, Aplastic, and Other Anemias

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.

The monthly home health regs digest

What CMS changed, what's due next, and what to do about it — one email a month, no fluff. Read the first issue