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

Y08 Assault by other specified means

All 15 codes in the Y08 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

15

Can lead a claim

0

Cannot lead a claim

15

What CMS assigns to Y08

None of the 15 codes is assigned a clinical group. None of the 15 is assigned a comorbidity subgroup. None can lead a claim.

Every code in Y08

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

CodeDescriptionPrimary positionClinical groupComorbidity subgroup
Y08.0 Assault by strike by sport equipment
Y08.01 Assault by strike by hockey stick
Y08.01XAAssault by strike by hockey stick, initial encounterCannot lead a claimExternal cause of injury code not reportable as principal diagnosisNoneNone
Y08.01XDAssault by strike by hockey stick, subsequent encounterCannot lead a claimExternal cause of injury code not reportable as principal diagnosisNoneNone
Y08.01XSAssault by strike by hockey stick, sequelaCannot lead a claimExternal cause of injury code not reportable as principal diagnosisNoneNone
Y08.02 Assault by strike by baseball bat
Y08.02XAAssault by strike by baseball bat, initial encounterCannot lead a claimExternal cause of injury code not reportable as principal diagnosisNoneNone
Y08.02XDAssault by strike by baseball bat, subsequent encounterCannot lead a claimExternal cause of injury code not reportable as principal diagnosisNoneNone
Y08.02XSAssault by strike by baseball bat, sequelaCannot lead a claimExternal cause of injury code not reportable as principal diagnosisNoneNone
Y08.09 Assault by strike by other specified type of sport equipment
Y08.09XAAssault by strike by other specified type of sport equipment, initial encounterCMS: Assault by strike by oth type of sport equipment, initCannot lead a claimExternal cause of injury code not reportable as principal diagnosisNoneNone
Y08.09XDAssault by strike by other specified type of sport equipment, subsequent encounterCMS: Assault by strike by oth type of sport equipment, subsCannot lead a claimExternal cause of injury code not reportable as principal diagnosisNoneNone
Y08.09XSAssault by strike by other specified type of sport equipment, sequelaCMS: Assault by strike by oth type of sport equipment, sequelaCannot lead a claimExternal cause of injury code not reportable as principal diagnosisNoneNone
Y08.8 Assault by other specified means
Y08.81 Assault by crashing of aircraft
Y08.81XAAssault by crashing of aircraft, initial encounterCannot lead a claimExternal cause of injury code not reportable as principal diagnosisNoneNone
Y08.81XDAssault by crashing of aircraft, subsequent encounterCannot lead a claimExternal cause of injury code not reportable as principal diagnosisNoneNone
Y08.81XSAssault by crashing of aircraft, sequelaCannot lead a claimExternal cause of injury code not reportable as principal diagnosisNoneNone
Y08.89 Assault by other specified means
Y08.89XAAssault by other specified means, initial encounterCannot lead a claimExternal cause of injury code not reportable as principal diagnosisNoneNone
Y08.89XDAssault by other specified means, subsequent encounterCannot lead a claimExternal cause of injury code not reportable as principal diagnosisNoneNone
Y08.89XSAssault by other specified means, sequelaCannot 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.

The monthly home health regs digest

What CMS changed, what's due next, and what to do about it — one email a month, no fluff. Read the first issue