S21.109 - Unspecified open wound of unspecified front wall of thorax without penetration into thoracic cavity S21.1 - Open wound of front wall of thorax without penetration into thoracic cavity S21.10 - Unspecified open wound of front wall of thorax without penetration into thoracic cavity S21.109 - Unspecified open wound of unspecified front wall of thorax without penetration into thoracic cavity