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

Y65 Other misadventures during surgical and medical care

All 9 codes in the Y65 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

9

Can lead a claim

0

Cannot lead a claim

9

What CMS assigns to Y65

None of the 9 codes is assigned a clinical group. None of the 9 is assigned a comorbidity subgroup. None can lead a claim.

Every code in Y65

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

CodeDescriptionPrimary positionClinical groupComorbidity subgroup
Y65.0Mismatched blood in transfusionCannot lead a claimExternal cause of injury code not reportable as principal diagnosisNoneNone
Y65.1Wrong fluid used in infusionCannot lead a claimExternal cause of injury code not reportable as principal diagnosisNoneNone
Y65.2Failure in suture or ligature during surgical operationCannot lead a claimExternal cause of injury code not reportable as principal diagnosisNoneNone
Y65.3Endotracheal tube wrongly placed during anesthetic procedureCannot lead a claimExternal cause of injury code not reportable as principal diagnosisNoneNone
Y65.4Failure to introduce or to remove other tube or instrumentCannot lead a claimExternal cause of injury code not reportable as principal diagnosisNoneNone
Y65.5 Performance of wrong procedure (operation)
Y65.51Performance of wrong procedure (operation) on correct patientCMS: Performance of wrong procedure (op) on correct patientCannot lead a claimExternal cause of injury code not reportable as principal diagnosisNoneNone
Y65.52Performance of procedure (operation) on patient not scheduled for surgeryCMS: Perform of proc (op) on patient not scheduled for surgeryCannot lead a claimExternal cause of injury code not reportable as principal diagnosisNoneNone
Y65.53Performance of correct procedure (operation) on wrong side or body partCMS: Perform of correct procedure (op) on wrong side or body partCannot lead a claimExternal cause of injury code not reportable as principal diagnosisNoneNone
Y65.8Other specified misadventures during surgical and medical careCMS: Oth misadventures during surgical and medical careCannot lead a claimExternal cause of injury code not reportable as principal diagnosisNoneNone

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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