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

D47 Other neoplasms of uncertain behavior of lymphoid, hematopoietic and related tissue

All 11 codes in the D47 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

11

Can lead a claim

10

Cannot lead a claim

1

What CMS assigns to D47

10 of the 11 codes group to MMTA - Infectious Disease, Neoplasms, and Blood-Forming Diseases; 1 is assigned no clinical group. None of the 11 is assigned a comorbidity subgroup. 10 of the 11 can lead a claim. CMS attaches a code-first note to 1 of the 11.

Code first

CMS grouper convention 6, on D47.Z1. Code first:

  • complication of transplanted organ (T86.-)

Every code in D47

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

CodeDescriptionPrimary positionClinical groupComorbidity subgroup
D47.0 Mast cell neoplasms of uncertain behavior
D47.01Cutaneous mastocytosisCan lead a claimKNone
D47.02Systemic mastocytosisCan lead a claimKNone
D47.09Other mast cell neoplasms of uncertain behaviorCan lead a claimKNone
D47.1Chronic myeloproliferative diseaseCan lead a claimKNone
D47.2Monoclonal gammopathyCan lead a claimKNone
D47.3Essential (hemorrhagic) thrombocythemiaCan lead a claimKNone
D47.4OsteomyelofibrosisCan lead a claimKNone
D47.Z Other specified neoplasms of uncertain behavior of lymphoid, hematopoietic and related tissue
D47.Z1Post-transplant lymphoproliferative disorder (PTLD)Cannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosisNoneNone
D47.Z2Castleman diseaseCan lead a claimKNone
D47.Z9Other specified neoplasms of uncertain behavior of lymphoid, hematopoietic and related tissueCMS: Oth neoplm of uncrt behav of lymphoid, hematpoetc & rel tissCan lead a claimKNone
D47.9Neoplasm of uncertain behavior of lymphoid, hematopoietic and related tissue, unspecifiedCMS: Neoplm of uncrt behav of lymphoid,hematpoetc & rel tiss,unspCan lead a claimKNone

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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