| S21.431 | Puncture wound without foreign body of right back wall of thorax with penetration into thoracic cavity | NON-BILLABLE CODE |
| S21.431A | Puncture wound without foreign body of right back wall of thorax with penetration into thoracic cavity, initial encounter | BILLABLE CODE |
| S21.431D | Puncture wound without foreign body of right back wall of thorax with penetration into thoracic cavity, subsequent encounter | BILLABLE CODE |
| S21.431S | Puncture wound without foreign body of right back wall of thorax with penetration into thoracic cavity, sequela | BILLABLE CODE |
| S21.432 | Puncture wound without foreign body of left back wall of thorax with penetration into thoracic cavity | NON-BILLABLE CODE |
| S21.432A | Puncture wound without foreign body of left back wall of thorax with penetration into thoracic cavity, initial encounter | BILLABLE CODE |
| S21.432D | Puncture wound without foreign body of left back wall of thorax with penetration into thoracic cavity, subsequent encounter | BILLABLE CODE |
| S21.432S | Puncture wound without foreign body of left back wall of thorax with penetration into thoracic cavity, sequela | BILLABLE CODE |
| S21.439 | Puncture wound without foreign body of unspecified back wall of thorax with penetration into thoracic cavity | NON-BILLABLE CODE |
| S21.439A | Puncture wound without foreign body of unspecified back wall of thorax with penetration into thoracic cavity, initial encounter | BILLABLE CODE |
| S21.439D | Puncture wound without foreign body of unspecified back wall of thorax with penetration into thoracic cavity, subsequent encounter | BILLABLE CODE |
| S21.439S | Puncture wound without foreign body of unspecified back wall of thorax with penetration into thoracic cavity, sequela | BILLABLE CODE |
