| S20.411 | Abrasion of right back wall of thorax | NON-BILLABLE CODE |
| S20.411A | Abrasion of right back wall of thorax, initial encounter | BILLABLE CODE |
| S20.411D | Abrasion of right back wall of thorax, subsequent encounter | BILLABLE CODE |
| S20.411S | Abrasion of right back wall of thorax, sequela | BILLABLE CODE |
| S20.412 | Abrasion of left back wall of thorax | NON-BILLABLE CODE |
| S20.412A | Abrasion of left back wall of thorax, initial encounter | BILLABLE CODE |
| S20.412D | Abrasion of left back wall of thorax, subsequent encounter | BILLABLE CODE |
| S20.412S | Abrasion of left back wall of thorax, sequela | BILLABLE CODE |
| S20.419 | Abrasion of unspecified back wall of thorax | NON-BILLABLE CODE |
| S20.419A | Abrasion of unspecified back wall of thorax, initial encounter | BILLABLE CODE |
| S20.419D | Abrasion of unspecified back wall of thorax, subsequent encounter | BILLABLE CODE |
| S20.419S | Abrasion of unspecified back wall of thorax, sequela | BILLABLE CODE |
