| W18.0 | Fall due to bumping against object | NON-BILLABLE CODE |
| W18.00 | Striking against unspecified object with subsequent fall | NON-BILLABLE CODE |
| W18.00XA | Striking against unspecified object with subsequent fall, initial encounter | BILLABLE CODE |
| W18.00XD | Striking against unspecified object with subsequent fall, subsequent encounter | BILLABLE CODE |
| W18.00XS | Striking against unspecified object with subsequent fall, sequela | BILLABLE CODE |
| W18.01 | Striking against sports equipment with subsequent fall | NON-BILLABLE CODE |
| W18.01XA | Striking against sports equipment with subsequent fall, initial encounter | BILLABLE CODE |
| W18.01XD | Striking against sports equipment with subsequent fall, subsequent encounter | BILLABLE CODE |
| W18.01XS | Striking against sports equipment with subsequent fall, sequela | BILLABLE CODE |
| W18.02 | Striking against glass with subsequent fall | NON-BILLABLE CODE |
| W18.02XA | Striking against glass with subsequent fall, initial encounter | BILLABLE CODE |
| W18.02XD | Striking against glass with subsequent fall, subsequent encounter | BILLABLE CODE |
| W18.02XS | Striking against glass with subsequent fall, sequela | BILLABLE CODE |
| W18.09 | Striking against other object with subsequent fall | NON-BILLABLE CODE |
| W18.09XA | Striking against other object with subsequent fall, initial encounter | BILLABLE CODE |
| W18.09XD | Striking against other object with subsequent fall, subsequent encounter | BILLABLE CODE |
| W18.09XS | Striking against other object with subsequent fall, sequela | BILLABLE CODE |
| W18.1 | Fall from or off toilet | NON-BILLABLE CODE |
| W18.11 | Fall from or off toilet without subsequent striking against object | NON-BILLABLE CODE |
| W18.11XA | Fall from or off toilet without subsequent striking against object, initial encounter | BILLABLE CODE |
| W18.11XD | Fall from or off toilet without subsequent striking against object, subsequent encounter | BILLABLE CODE |
| W18.11XS | Fall from or off toilet without subsequent striking against object, sequela | BILLABLE CODE |
| W18.12 | Fall from or off toilet with subsequent striking against object | NON-BILLABLE CODE |
| W18.12XA | Fall from or off toilet with subsequent striking against object, initial encounter | BILLABLE CODE |
| W18.12XD | Fall from or off toilet with subsequent striking against object, subsequent encounter | BILLABLE CODE |
| W18.12XS | Fall from or off toilet with subsequent striking against object, sequela | BILLABLE CODE |
| W18.2 | Fall in (into) shower or empty bathtub | NON-BILLABLE CODE |
| W18.2XXA | Fall in (into) shower or empty bathtub, initial encounter | BILLABLE CODE |
| W18.2XXD | Fall in (into) shower or empty bathtub, subsequent encounter | BILLABLE CODE |
| W18.2XXS | Fall in (into) shower or empty bathtub, sequela | BILLABLE CODE |
| W18.3 | Other and unspecified fall on same level | NON-BILLABLE CODE |
| W18.30 | Fall on same level, unspecified | NON-BILLABLE CODE |
| W18.30XA | Fall on same level, unspecified, initial encounter | BILLABLE CODE |
| W18.30XD | Fall on same level, unspecified, subsequent encounter | BILLABLE CODE |
| W18.30XS | Fall on same level, unspecified, sequela | BILLABLE CODE |
| W18.31 | Fall on same level due to stepping on an object | NON-BILLABLE CODE |
| W18.31XA | Fall on same level due to stepping on an object, initial encounter | BILLABLE CODE |
| W18.31XD | Fall on same level due to stepping on an object, subsequent encounter | BILLABLE CODE |
| W18.31XS | Fall on same level due to stepping on an object, sequela | BILLABLE CODE |
| W18.39 | Other fall on same level | NON-BILLABLE CODE |
| W18.39XA | Other fall on same level, initial encounter | BILLABLE CODE |
| W18.39XD | Other fall on same level, subsequent encounter | BILLABLE CODE |
| W18.39XS | Other fall on same level, sequela | BILLABLE CODE |
| W18.4 | Slipping, tripping and stumbling without falling | NON-BILLABLE CODE |
| W18.40 | Slipping, tripping and stumbling without falling, unspecified | NON-BILLABLE CODE |
| W18.40XA | Slipping, tripping and stumbling without falling, unspecified, initial encounter | BILLABLE CODE |
| W18.40XD | Slipping, tripping and stumbling without falling, unspecified, subsequent encounter | BILLABLE CODE |
| W18.40XS | Slipping, tripping and stumbling without falling, unspecified, sequela | BILLABLE CODE |
| W18.41 | Slipping, tripping and stumbling without falling due to stepping on object | NON-BILLABLE CODE |
| W18.41XA | Slipping, tripping and stumbling without falling due to stepping on object, initial encounter | BILLABLE CODE |
| W18.41XD | Slipping, tripping and stumbling without falling due to stepping on object, subsequent encounter | BILLABLE CODE |
| W18.41XS | Slipping, tripping and stumbling without falling due to stepping on object, sequela | BILLABLE CODE |
| W18.42 | Slipping, tripping and stumbling without falling due to stepping into hole or opening | NON-BILLABLE CODE |
| W18.42XA | Slipping, tripping and stumbling without falling due to stepping into hole or opening, initial encounter | BILLABLE CODE |
| W18.42XD | Slipping, tripping and stumbling without falling due to stepping into hole or opening, subsequent encounter | BILLABLE CODE |
| W18.42XS | Slipping, tripping and stumbling without falling due to stepping into hole or opening, sequela | BILLABLE CODE |
| W18.43 | Slipping, tripping and stumbling without falling due to stepping from one level to another | NON-BILLABLE CODE |
| W18.43XA | Slipping, tripping and stumbling without falling due to stepping from one level to another, initial encounter | BILLABLE CODE |
| W18.43XD | Slipping, tripping and stumbling without falling due to stepping from one level to another, subsequent encounter | BILLABLE CODE |
| W18.43XS | Slipping, tripping and stumbling without falling due to stepping from one level to another, sequela | BILLABLE CODE |
| W18.49 | Other slipping, tripping and stumbling without falling | NON-BILLABLE CODE |
| W18.49XA | Other slipping, tripping and stumbling without falling, initial encounter | BILLABLE CODE |
| W18.49XD | Other slipping, tripping and stumbling without falling, subsequent encounter | BILLABLE CODE |
| W18.49XS | Other slipping, tripping and stumbling without falling, sequela | BILLABLE CODE |
