| S20.301 | Unspecified superficial injuries of right front wall of thorax | NON-BILLABLE CODE |
| S20.301A | Unspecified superficial injuries of right front wall of thorax, initial encounter | BILLABLE CODE |
| S20.301D | Unspecified superficial injuries of right front wall of thorax, subsequent encounter | BILLABLE CODE |
| S20.301S | Unspecified superficial injuries of right front wall of thorax, sequela | BILLABLE CODE |
| S20.302 | Unspecified superficial injuries of left front wall of thorax | NON-BILLABLE CODE |
| S20.302A | Unspecified superficial injuries of left front wall of thorax, initial encounter | BILLABLE CODE |
| S20.302D | Unspecified superficial injuries of left front wall of thorax, subsequent encounter | BILLABLE CODE |
| S20.302S | Unspecified superficial injuries of left front wall of thorax, sequela | BILLABLE CODE |
| S20.303 | Unspecified superficial injuries of bilateral front wall of thorax | NON-BILLABLE CODE |
| S20.303A | Unspecified superficial injuries of bilateral front wall of thorax, initial encounter | BILLABLE CODE |
| S20.303D | Unspecified superficial injuries of bilateral front wall of thorax, subsequent encounter | BILLABLE CODE |
| S20.303S | Unspecified superficial injuries of bilateral front wall of thorax, sequela | BILLABLE CODE |
| S20.304 | Unspecified superficial injuries of middle front wall of thorax | NON-BILLABLE CODE |
| S20.304A | Unspecified superficial injuries of middle front wall of thorax, initial encounter | BILLABLE CODE |
| S20.304D | Unspecified superficial injuries of middle front wall of thorax, subsequent encounter | BILLABLE CODE |
| S20.304S | Unspecified superficial injuries of middle front wall of thorax, sequela | BILLABLE CODE |
| S20.309 | Unspecified superficial injuries of unspecified front wall of thorax | NON-BILLABLE CODE |
| S20.309A | Unspecified superficial injuries of unspecified front wall of thorax, initial encounter | BILLABLE CODE |
| S20.309D | Unspecified superficial injuries of unspecified front wall of thorax, subsequent encounter | BILLABLE CODE |
| S20.309S | Unspecified superficial injuries of unspecified front wall of thorax, sequela | BILLABLE CODE |
