| W21 | Striking against or struck by sports equipment | NON-BILLABLE CODE |
| W21.0 | Struck by hit or thrown ball | NON-BILLABLE CODE |
| W21.00 | Struck by hit or thrown ball, unspecified type | NON-BILLABLE CODE |
| W21.00XA | Struck by hit or thrown ball, unspecified type, initial encounter | BILLABLE CODE |
| W21.00XD | Struck by hit or thrown ball, unspecified type, subsequent encounter | BILLABLE CODE |
| W21.00XS | Struck by hit or thrown ball, unspecified type, sequela | BILLABLE CODE |
| W21.01 | Struck by football | NON-BILLABLE CODE |
| W21.01XA | Struck by football, initial encounter | BILLABLE CODE |
| W21.01XD | Struck by football, subsequent encounter | BILLABLE CODE |
| W21.01XS | Struck by football, sequela | BILLABLE CODE |
| W21.02 | Struck by soccer ball | NON-BILLABLE CODE |
| W21.02XA | Struck by soccer ball, initial encounter | BILLABLE CODE |
| W21.02XS | Struck by soccer ball, sequela | BILLABLE CODE |
| W21.03 | Struck by baseball | NON-BILLABLE CODE |
| W21.03XA | Struck by baseball, initial encounter | BILLABLE CODE |
| W21.03XD | Struck by baseball, subsequent encounter | BILLABLE CODE |
| W21.03XS | Struck by baseball, sequela | BILLABLE CODE |
| W21.04 | Struck by golf ball | NON-BILLABLE CODE |
| W21.04XA | Struck by golf ball, initial encounter | BILLABLE CODE |
| W21.04XD | Struck by golf ball, subsequent encounter | BILLABLE CODE |
| W21.04XS | Struck by golf ball, sequela | BILLABLE CODE |
| W21.05 | Struck by basketball | NON-BILLABLE CODE |
| W21.05XA | Struck by basketball, initial encounter | BILLABLE CODE |
| W21.05XD | Struck by basketball, subsequent encounter | BILLABLE CODE |
| W21.05XS | Struck by basketball, sequela | BILLABLE CODE |
| W21.06 | Struck by volleyball | NON-BILLABLE CODE |
| W21.06XA | Struck by volleyball, initial encounter | BILLABLE CODE |
| W21.06XD | Struck by volleyball, subsequent encounter | BILLABLE CODE |
| W21.06XS | Struck by volleyball, sequela | BILLABLE CODE |
| W21.07 | Struck by softball | NON-BILLABLE CODE |
| W21.07XA | Struck by softball, initial encounter | BILLABLE CODE |
| W21.07XD | Struck by softball, subsequent encounter | BILLABLE CODE |
| W21.07XS | Struck by softball, sequela | BILLABLE CODE |
| W21.09 | Struck by other hit or thrown ball | NON-BILLABLE CODE |
| W21.09XA | Struck by other hit or thrown ball, initial encounter | BILLABLE CODE |
| W21.09XD | Struck by other hit or thrown ball, subsequent encounter | BILLABLE CODE |
| W21.09XS | Struck by other hit or thrown ball, sequela | BILLABLE CODE |
| W21.1 | Struck by bat, racquet or club | NON-BILLABLE CODE |
| W21.11 | Struck by baseball bat | NON-BILLABLE CODE |
| W21.11XA | Struck by baseball bat, initial encounter | BILLABLE CODE |
| W21.11XD | Struck by baseball bat, subsequent encounter | BILLABLE CODE |
| W21.11XS | Struck by baseball bat, sequela | BILLABLE CODE |
| W21.12 | Struck by tennis racquet | NON-BILLABLE CODE |
| W21.12XA | Struck by tennis racquet, initial encounter | BILLABLE CODE |
| W21.12XD | Struck by tennis racquet, subsequent encounter | BILLABLE CODE |
| W21.12XS | Struck by tennis racquet, sequela | BILLABLE CODE |
| W21.13 | Struck by golf club | NON-BILLABLE CODE |
| W21.13XA | Struck by golf club, initial encounter | BILLABLE CODE |
| W21.13XD | Struck by golf club, subsequent encounter | BILLABLE CODE |
| W21.13XS | Struck by golf club, sequela | BILLABLE CODE |
| W21.19 | Struck by other bat, racquet or club | NON-BILLABLE CODE |
| W21.19XA | Struck by other bat, racquet or club, initial encounter | BILLABLE CODE |
| W21.19XD | Struck by other bat, racquet or club, subsequent encounter | BILLABLE CODE |
| W21.19XS | Struck by other bat, racquet or club, sequela | BILLABLE CODE |
| W21.2 | Struck by hockey stick or puck | NON-BILLABLE CODE |
| W21.21 | Struck by hockey stick | NON-BILLABLE CODE |
| W21.210 | Struck by ice hockey stick | NON-BILLABLE CODE |
| W21.210A | Struck by ice hockey stick, initial encounter | BILLABLE CODE |
| W21.210D | Struck by ice hockey stick, subsequent encounter | BILLABLE CODE |
| W21.210S | Struck by ice hockey stick, sequela | BILLABLE CODE |
| W21.211 | Struck by field hockey stick | NON-BILLABLE CODE |
| W21.211A | Struck by field hockey stick, initial encounter | BILLABLE CODE |
| W21.211D | Struck by field hockey stick, subsequent encounter | BILLABLE CODE |
| W21.211S | Struck by field hockey stick, sequela | BILLABLE CODE |
| W21.22 | Struck by hockey puck | NON-BILLABLE CODE |
| W21.220 | Struck by ice hockey puck | NON-BILLABLE CODE |
| W21.220A | Struck by ice hockey puck, initial encounter | BILLABLE CODE |
| W21.220D | Struck by ice hockey puck, subsequent encounter | BILLABLE CODE |
| W21.220S | Struck by ice hockey puck, sequela | BILLABLE CODE |
| W21.221 | Struck by field hockey puck | NON-BILLABLE CODE |
| W21.221A | Struck by field hockey puck, initial encounter | BILLABLE CODE |
| W21.221D | Struck by field hockey puck, subsequent encounter | BILLABLE CODE |
| W21.221S | Struck by field hockey puck, sequela | BILLABLE CODE |
| W21.3 | Struck by sports foot wear | NON-BILLABLE CODE |
| W21.31 | Struck by shoe cleats | NON-BILLABLE CODE |
| W21.31XA | Struck by shoe cleats, initial encounter | BILLABLE CODE |
| W21.31XD | Struck by shoe cleats, subsequent encounter | BILLABLE CODE |
| W21.31XS | Struck by shoe cleats, sequela | BILLABLE CODE |
| W21.32 | Struck by skate blades | NON-BILLABLE CODE |
| W21.32XA | Struck by skate blades, initial encounter | BILLABLE CODE |
| W21.32XD | Struck by skate blades, subsequent encounter | BILLABLE CODE |
| W21.32XS | Struck by skate blades, sequela | BILLABLE CODE |
| W21.39 | Struck by other sports foot wear | NON-BILLABLE CODE |
| W21.39XA | Struck by other sports foot wear, initial encounter | BILLABLE CODE |
| W21.39XD | Struck by other sports foot wear, subsequent encounter | BILLABLE CODE |
| W21.39XS | Struck by other sports foot wear, sequela | BILLABLE CODE |
| W21.4 | Striking against diving board | NON-BILLABLE CODE |
| W21.4XXA | Striking against diving board, initial encounter | BILLABLE CODE |
| W21.4XXD | Striking against diving board, subsequent encounter | BILLABLE CODE |
| W21.4XXS | Striking against diving board, sequela | BILLABLE CODE |
| W21.8 | Striking against or struck by other sports equipment | NON-BILLABLE CODE |
| W21.81 | Striking against or struck by football helmet | NON-BILLABLE CODE |
| W21.81XA | Striking against or struck by football helmet, initial encounter | BILLABLE CODE |
| W21.81XD | Striking against or struck by football helmet, subsequent encounter | BILLABLE CODE |
| W21.81XS | Striking against or struck by football helmet, sequela | BILLABLE CODE |
| W21.89 | Striking against or struck by other sports equipment | NON-BILLABLE CODE |
| W21.89XA | Striking against or struck by other sports equipment, initial encounter | BILLABLE CODE |
| W21.89XD | Striking against or struck by other sports equipment, subsequent encounter | BILLABLE CODE |
| W21.89XS | Striking against or struck by other sports equipment, sequela | BILLABLE CODE |
| W21.9 | Striking against or struck by unspecified sports equipment | NON-BILLABLE CODE |
| W21.9XXA | Striking against or struck by unspecified sports equipment, initial encounter | BILLABLE CODE |
| W21.9XXD | Striking against or struck by unspecified sports equipment, subsequent encounter | BILLABLE CODE |
| W21.9XXS | Striking against or struck by unspecified sports equipment, sequela | BILLABLE CODE |
