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

W21 Striking against or struck by sports equipment

All 72 codes in the W21 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

72

Can lead a claim

0

Cannot lead a claim

72

What CMS assigns to W21

None of the 72 codes is assigned a clinical group. None of the 72 is assigned a comorbidity subgroup. None can lead a claim.

Every code in W21

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

CodeDescriptionPrimary positionClinical groupComorbidity subgroup
W21.0 Struck by hit or thrown ball
W21.00 Struck by hit or thrown ball, unspecified type
W21.00XAStruck by hit or thrown ball, unspecified type, initial encounterCMS: Struck by hit or thrown ball, unspecified type, init encntrCannot lead a claimExternal cause of injury code not reportable as principal diagnosisNoneNone
W21.00XDStruck by hit or thrown ball, unspecified type, subsequent encounterCMS: Struck by hit or thrown ball, unspecified type, subs encntrCannot lead a claimExternal cause of injury code not reportable as principal diagnosisNoneNone
W21.00XSStruck by hit or thrown ball, unspecified type, sequelaCannot lead a claimExternal cause of injury code not reportable as principal diagnosisNoneNone
W21.01 Struck by football
W21.01XAStruck by football, initial encounterCannot lead a claimExternal cause of injury code not reportable as principal diagnosisNoneNone
W21.01XDStruck by football, subsequent encounterCannot lead a claimExternal cause of injury code not reportable as principal diagnosisNoneNone
W21.01XSStruck by football, sequelaCannot lead a claimExternal cause of injury code not reportable as principal diagnosisNoneNone
W21.02 Struck by soccer ball
W21.02XAStruck by soccer ball, initial encounterCannot lead a claimExternal cause of injury code not reportable as principal diagnosisNoneNone
W21.02XDStruck by soccer ball, subsequent encounterCannot lead a claimExternal cause of injury code not reportable as principal diagnosisNoneNone
W21.02XSStruck by soccer ball, sequelaCannot lead a claimExternal cause of injury code not reportable as principal diagnosisNoneNone
W21.03 Struck by baseball
W21.03XAStruck by baseball, initial encounterCannot lead a claimExternal cause of injury code not reportable as principal diagnosisNoneNone
W21.03XDStruck by baseball, subsequent encounterCannot lead a claimExternal cause of injury code not reportable as principal diagnosisNoneNone
W21.03XSStruck by baseball, sequelaCannot lead a claimExternal cause of injury code not reportable as principal diagnosisNoneNone
W21.04 Struck by golf ball
W21.04XAStruck by golf ball, initial encounterCannot lead a claimExternal cause of injury code not reportable as principal diagnosisNoneNone
W21.04XDStruck by golf ball, subsequent encounterCannot lead a claimExternal cause of injury code not reportable as principal diagnosisNoneNone
W21.04XSStruck by golf ball, sequelaCannot lead a claimExternal cause of injury code not reportable as principal diagnosisNoneNone
W21.05 Struck by basketball
W21.05XAStruck by basketball, initial encounterCannot lead a claimExternal cause of injury code not reportable as principal diagnosisNoneNone
W21.05XDStruck by basketball, subsequent encounterCannot lead a claimExternal cause of injury code not reportable as principal diagnosisNoneNone
W21.05XSStruck by basketball, sequelaCannot lead a claimExternal cause of injury code not reportable as principal diagnosisNoneNone
W21.06 Struck by volleyball
W21.06XAStruck by volleyball, initial encounterCannot lead a claimExternal cause of injury code not reportable as principal diagnosisNoneNone
W21.06XDStruck by volleyball, subsequent encounterCannot lead a claimExternal cause of injury code not reportable as principal diagnosisNoneNone
W21.06XSStruck by volleyball, sequelaCannot lead a claimExternal cause of injury code not reportable as principal diagnosisNoneNone
W21.07 Struck by softball
W21.07XAStruck by softball, initial encounterCannot lead a claimExternal cause of injury code not reportable as principal diagnosisNoneNone
W21.07XDStruck by softball, subsequent encounterCannot lead a claimExternal cause of injury code not reportable as principal diagnosisNoneNone
W21.07XSStruck by softball, sequelaCannot lead a claimExternal cause of injury code not reportable as principal diagnosisNoneNone
W21.09 Struck by other hit or thrown ball
W21.09XAStruck by other hit or thrown ball, initial encounterCannot lead a claimExternal cause of injury code not reportable as principal diagnosisNoneNone
W21.09XDStruck by other hit or thrown ball, subsequent encounterCannot lead a claimExternal cause of injury code not reportable as principal diagnosisNoneNone
W21.09XSStruck by other hit or thrown ball, sequelaCannot lead a claimExternal cause of injury code not reportable as principal diagnosisNoneNone
W21.1 Struck by bat, racquet or club
W21.11 Struck by baseball bat
W21.11XAStruck by baseball bat, initial encounterCannot lead a claimExternal cause of injury code not reportable as principal diagnosisNoneNone
W21.11XDStruck by baseball bat, subsequent encounterCannot lead a claimExternal cause of injury code not reportable as principal diagnosisNoneNone
W21.11XSStruck by baseball bat, sequelaCannot lead a claimExternal cause of injury code not reportable as principal diagnosisNoneNone
W21.12 Struck by tennis racquet
W21.12XAStruck by tennis racquet, initial encounterCannot lead a claimExternal cause of injury code not reportable as principal diagnosisNoneNone
W21.12XDStruck by tennis racquet, subsequent encounterCannot lead a claimExternal cause of injury code not reportable as principal diagnosisNoneNone
W21.12XSStruck by tennis racquet, sequelaCannot lead a claimExternal cause of injury code not reportable as principal diagnosisNoneNone
W21.13 Struck by golf club
W21.13XAStruck by golf club, initial encounterCannot lead a claimExternal cause of injury code not reportable as principal diagnosisNoneNone
W21.13XDStruck by golf club, subsequent encounterCannot lead a claimExternal cause of injury code not reportable as principal diagnosisNoneNone
W21.13XSStruck by golf club, sequelaCannot lead a claimExternal cause of injury code not reportable as principal diagnosisNoneNone
W21.19 Struck by other bat, racquet or club
W21.19XAStruck by other bat, racquet or club, initial encounterCannot lead a claimExternal cause of injury code not reportable as principal diagnosisNoneNone
W21.19XDStruck by other bat, racquet or club, subsequent encounterCannot lead a claimExternal cause of injury code not reportable as principal diagnosisNoneNone
W21.19XSStruck by other bat, racquet or club, sequelaCannot lead a claimExternal cause of injury code not reportable as principal diagnosisNoneNone
W21.2 Struck by hockey stick or puck
W21.21 Struck by hockey stick
W21.210 Struck by ice hockey stick
W21.210AStruck by ice hockey stick, initial encounterCannot lead a claimExternal cause of injury code not reportable as principal diagnosisNoneNone
W21.210DStruck by ice hockey stick, subsequent encounterCannot lead a claimExternal cause of injury code not reportable as principal diagnosisNoneNone
W21.210SStruck by ice hockey stick, sequelaCannot lead a claimExternal cause of injury code not reportable as principal diagnosisNoneNone
W21.211 Struck by field hockey stick
W21.211AStruck by field hockey stick, initial encounterCannot lead a claimExternal cause of injury code not reportable as principal diagnosisNoneNone
W21.211DStruck by field hockey stick, subsequent encounterCannot lead a claimExternal cause of injury code not reportable as principal diagnosisNoneNone
W21.211SStruck by field hockey stick, sequelaCannot lead a claimExternal cause of injury code not reportable as principal diagnosisNoneNone
W21.22 Struck by hockey puck
W21.220 Struck by ice hockey puck
W21.220AStruck by ice hockey puck, initial encounterCannot lead a claimExternal cause of injury code not reportable as principal diagnosisNoneNone
W21.220DStruck by ice hockey puck, subsequent encounterCannot lead a claimExternal cause of injury code not reportable as principal diagnosisNoneNone
W21.220SStruck by ice hockey puck, sequelaCannot lead a claimExternal cause of injury code not reportable as principal diagnosisNoneNone
W21.221 Struck by field hockey puck
W21.221AStruck by field hockey puck, initial encounterCannot lead a claimExternal cause of injury code not reportable as principal diagnosisNoneNone
W21.221DStruck by field hockey puck, subsequent encounterCannot lead a claimExternal cause of injury code not reportable as principal diagnosisNoneNone
W21.221SStruck by field hockey puck, sequelaCannot lead a claimExternal cause of injury code not reportable as principal diagnosisNoneNone
W21.3 Struck by sports foot wear
W21.31 Struck by shoe cleats
W21.31XAStruck by shoe cleats, initial encounterCannot lead a claimExternal cause of injury code not reportable as principal diagnosisNoneNone
W21.31XDStruck by shoe cleats, subsequent encounterCannot lead a claimExternal cause of injury code not reportable as principal diagnosisNoneNone
W21.31XSStruck by shoe cleats, sequelaCannot lead a claimExternal cause of injury code not reportable as principal diagnosisNoneNone
W21.32 Struck by skate blades
W21.32XAStruck by skate blades, initial encounterCannot lead a claimExternal cause of injury code not reportable as principal diagnosisNoneNone
W21.32XDStruck by skate blades, subsequent encounterCannot lead a claimExternal cause of injury code not reportable as principal diagnosisNoneNone
W21.32XSStruck by skate blades, sequelaCannot lead a claimExternal cause of injury code not reportable as principal diagnosisNoneNone
W21.39 Struck by other sports foot wear
W21.39XAStruck by other sports foot wear, initial encounterCannot lead a claimExternal cause of injury code not reportable as principal diagnosisNoneNone
W21.39XDStruck by other sports foot wear, subsequent encounterCannot lead a claimExternal cause of injury code not reportable as principal diagnosisNoneNone
W21.39XSStruck by other sports foot wear, sequelaCannot lead a claimExternal cause of injury code not reportable as principal diagnosisNoneNone
W21.4 Striking against diving board
W21.4XXAStriking against diving board, initial encounterCannot lead a claimExternal cause of injury code not reportable as principal diagnosisNoneNone
W21.4XXDStriking against diving board, subsequent encounterCannot lead a claimExternal cause of injury code not reportable as principal diagnosisNoneNone
W21.4XXSStriking against diving board, sequelaCannot lead a claimExternal cause of injury code not reportable as principal diagnosisNoneNone
W21.8 Striking against or struck by other sports equipment
W21.81 Striking against or struck by football helmet
W21.81XAStriking against or struck by football helmet, initial encounterCMS: Striking against or struck by football helmet, init encntrCannot lead a claimExternal cause of injury code not reportable as principal diagnosisNoneNone
W21.81XDStriking against or struck by football helmet, subsequent encounterCMS: Striking against or struck by football helmet, subs encntrCannot lead a claimExternal cause of injury code not reportable as principal diagnosisNoneNone
W21.81XSStriking against or struck by football helmet, sequelaCannot lead a claimExternal cause of injury code not reportable as principal diagnosisNoneNone
W21.89 Striking against or struck by other sports equipment
W21.89XAStriking against or struck by other sports equipment, initial encounterCMS: Striking against or struck by oth sports equipment, initCannot lead a claimExternal cause of injury code not reportable as principal diagnosisNoneNone
W21.89XDStriking against or struck by other sports equipment, subsequent encounterCMS: Striking against or struck by oth sports equipment, subsCannot lead a claimExternal cause of injury code not reportable as principal diagnosisNoneNone
W21.89XSStriking against or struck by other sports equipment, sequelaCMS: Striking against or struck by oth sports equipment, sequelaCannot lead a claimExternal cause of injury code not reportable as principal diagnosisNoneNone
W21.9 Striking against or struck by unspecified sports equipment
W21.9XXAStriking against or struck by unspecified sports equipment, initial encounterCMS: Striking against or struck by unsp sports equipment, initCannot lead a claimExternal cause of injury code not reportable as principal diagnosisNoneNone
W21.9XXDStriking against or struck by unspecified sports equipment, subsequent encounterCMS: Striking against or struck by unsp sports equipment, subsCannot lead a claimExternal cause of injury code not reportable as principal diagnosisNoneNone
W21.9XXSStriking against or struck by unspecified sports equipment, sequelaCMS: Striking against or struck by unsp sports equipment, 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.

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