S21.249 - Puncture wound with foreign body of unspecified back wall of thorax without penetration into thoracic cavity S21.2 - Open wound of back wall of thorax without penetration into thoracic cavity S21.24 - Puncture wound with foreign body of back wall of thorax without penetration into thoracic cavity S21.249 - Puncture wound with foreign body of unspecified back wall of thorax without penetration into thoracic cavity