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

I60 Nontraumatic subarachnoid hemorrhage

All 18 codes in the I60 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

18

Can lead a claim

18

Cannot lead a claim

0

What CMS assigns to I60

All 18 codes group to Neuro Rehabilitation. None of the 18 is assigned a comorbidity subgroup. Every code can lead a claim.

Every code in I60

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

CodeDescriptionPrimary positionClinical groupComorbidity subgroup
I60.0 Nontraumatic subarachnoid hemorrhage from carotid siphon and bifurcation
I60.00Nontraumatic subarachnoid hemorrhage from unspecified carotid siphon and bifurcationCMS: Ntrm subarach hemorrhage from unsp carotid siphon and bifurcCan lead a claimBNone
I60.01Nontraumatic subarachnoid hemorrhage from right carotid siphon and bifurcationCMS: Ntrm subarach hemor from right carotid siphon and bifurcCan lead a claimBNone
I60.02Nontraumatic subarachnoid hemorrhage from left carotid siphon and bifurcationCMS: Ntrm subarach hemorrhage from left carotid siphon and bifurcCan lead a claimBNone
I60.1 Nontraumatic subarachnoid hemorrhage from middle cerebral artery
I60.10Nontraumatic subarachnoid hemorrhage from unspecified middle cerebral arteryCMS: Ntrm subarach hemorrhage from unsp middle cerebral arteryCan lead a claimBNone
I60.11Nontraumatic subarachnoid hemorrhage from right middle cerebral arteryCMS: Ntrm subarach hemorrhage from right middle cerebral arteryCan lead a claimBNone
I60.12Nontraumatic subarachnoid hemorrhage from left middle cerebral arteryCMS: Ntrm subarach hemorrhage from left middle cerebral arteryCan lead a claimBNone
I60.2Nontraumatic subarachnoid hemorrhage from anterior communicating arteryCMS: Ntrm subarach hemorrhage from anterior communicating arteryCan lead a claimBNone
I60.3 Nontraumatic subarachnoid hemorrhage from posterior communicating artery
I60.30Nontraumatic subarachnoid hemorrhage from unspecified posterior communicating arteryCMS: Ntrm subarach hemor from unsp posterior communicating arteryCan lead a claimBNone
I60.31Nontraumatic subarachnoid hemorrhage from right posterior communicating arteryCMS: Ntrm subarach hemor from right post communicating arteryCan lead a claimBNone
I60.32Nontraumatic subarachnoid hemorrhage from left posterior communicating arteryCMS: Ntrm subarach hemor from left posterior communicating arteryCan lead a claimBNone
I60.4Nontraumatic subarachnoid hemorrhage from basilar arteryCan lead a claimBNone
I60.5 Nontraumatic subarachnoid hemorrhage from vertebral artery
I60.50Nontraumatic subarachnoid hemorrhage from unspecified vertebral arteryCMS: Nontraumatic subarachnoid hemorrhage from unsp verteb artCan lead a claimBNone
I60.51Nontraumatic subarachnoid hemorrhage from right vertebral arteryCMS: Nontraumatic subarachnoid hemorrhage from r verteb artCan lead a claimBNone
I60.52Nontraumatic subarachnoid hemorrhage from left vertebral arteryCMS: Nontraumatic subarachnoid hemorrhage from l verteb artCan lead a claimBNone
I60.6Nontraumatic subarachnoid hemorrhage from other intracranial arteriesCMS: Nontraumatic subarachnoid hemorrhage from oth intracran artCan lead a claimBNone
I60.7Nontraumatic subarachnoid hemorrhage from unspecified intracranial arteryCMS: Nontraumatic subarachnoid hemorrhage from unsp intracran artCan lead a claimBNone
I60.8Other nontraumatic subarachnoid hemorrhageCan lead a claimBNone
I60.9Nontraumatic subarachnoid hemorrhage, 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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