S20.31 - Abrasion of front wall of thorax S20.3 - Other and unspecified superficial injuries of front wall of thorax S20.31 - Abrasion of front wall of thorax S20.311 - Abrasion of right front wall of thorax S20.312 - Abrasion of left front wall of thorax S20.319 - Abrasion of unspecified front wall of thorax