ICD-10 · PDGM grouping
D43 Neoplasm of uncertain behavior of brain and central nervous system
All 7 codes in the D43 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.
Codes in family
7
Can lead a claim
6
Cannot lead a claim
1
What CMS assigns to D43
6 of the 7 codes group to Neuro Rehabilitation (4) and MMTA - Infectious Disease, Neoplasms, and Blood-Forming Diseases (2); 1 is assigned no clinical group. None of the 7 is assigned a comorbidity subgroup. 6 of the 7 can lead a claim.
Every code in D43
Descriptions are CDC’s FY2027 wording; where CMS’s grouper abbreviates one, its form is shown beneath.
| Code | Description | Primary position | Clinical group | Comorbidity subgroup |
|---|---|---|---|---|
| D43.0 | Neoplasm of uncertain behavior of brain, supratentorial | Can lead a claim | B | None |
| D43.1 | Neoplasm of uncertain behavior of brain, infratentorial | Can lead a claim | B | None |
| D43.2 | Neoplasm of uncertain behavior of brain, unspecified | Can lead a claim | B | None |
| D43.3 | Neoplasm of uncertain behavior of cranial nerves | Can lead a claim | B | None |
| D43.4 | Neoplasm of uncertain behavior of spinal cord | Can lead a claim | K | None |
| D43.8 | Neoplasm of uncertain behavior of other specified parts of central nervous systemCMS: Neoplasm of uncertain behavior of prt central nervous system | Can lead a claim | K | None |
| D43.9 | Neoplasm of uncertain behavior of central nervous system, unspecifiedCMS: Neoplasm of uncertain behavior of cnsl, unsp | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
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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