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

C72 Malignant neoplasm of spinal cord, cranial nerves and other parts of central nervous system

All 14 codes in the C72 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

14

Can lead a claim

10

Cannot lead a claim

4

What CMS assigns to C72

10 of the 14 codes group to Neuro Rehabilitation; 4 are assigned no clinical group. 9 of the 14 count toward the Malignant Neoplasm of Spinal Cord, Cranial Nerves and Other Parts of Central Nervous system comorbidity subgroup; 5 are assigned none. 10 of the 14 can lead a claim.

  • Malignant Neoplasm of Spinal Cord, Cranial Nerves and Other Parts of Central Nervous system

Every code in C72

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

CodeDescriptionPrimary positionClinical groupComorbidity subgroup
C72.0Malignant neoplasm of spinal cordCan lead a claimBMalignant Neoplasm of Spinal Cord, Cranial Nerves and Other Parts of Central Nervous system
C72.1Malignant neoplasm of cauda equinaCan lead a claimBMalignant Neoplasm of Spinal Cord, Cranial Nerves and Other Parts of Central Nervous system
C72.2 Malignant neoplasm of olfactory nerve
C72.20Malignant neoplasm of unspecified olfactory nerveCannot lead a claimPrincipal diagnosis not assigned to a clinical groupNoneNone
C72.21Malignant neoplasm of right olfactory nerveCan lead a claimBMalignant Neoplasm of Spinal Cord, Cranial Nerves and Other Parts of Central Nervous system
C72.22Malignant neoplasm of left olfactory nerveCan lead a claimBMalignant Neoplasm of Spinal Cord, Cranial Nerves and Other Parts of Central Nervous system
C72.3 Malignant neoplasm of optic nerve
C72.30Malignant neoplasm of unspecified optic nerveCannot lead a claimPrincipal diagnosis not assigned to a clinical groupNoneNone
C72.31Malignant neoplasm of right optic nerveCan lead a claimBMalignant Neoplasm of Spinal Cord, Cranial Nerves and Other Parts of Central Nervous system
C72.32Malignant neoplasm of left optic nerveCan lead a claimBMalignant Neoplasm of Spinal Cord, Cranial Nerves and Other Parts of Central Nervous system
C72.4 Malignant neoplasm of acoustic nerve
C72.40Malignant neoplasm of unspecified acoustic nerveCannot lead a claimPrincipal diagnosis not assigned to a clinical groupNoneNone
C72.41Malignant neoplasm of right acoustic nerveCan lead a claimBMalignant Neoplasm of Spinal Cord, Cranial Nerves and Other Parts of Central Nervous system
C72.42Malignant neoplasm of left acoustic nerveCan lead a claimBMalignant Neoplasm of Spinal Cord, Cranial Nerves and Other Parts of Central Nervous system
C72.5 Malignant neoplasm of other and unspecified cranial nerves
C72.50Malignant neoplasm of unspecified cranial nerveCannot lead a claimPrincipal diagnosis not assigned to a clinical groupNoneNone
C72.59Malignant neoplasm of other cranial nervesCan lead a claimBMalignant Neoplasm of Spinal Cord, Cranial Nerves and Other Parts of Central Nervous system
C72.9Malignant neoplasm of central nervous system, unspecifiedCan lead a claimBNone

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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