S20.2 - Contusion of thorax S20 - Superficial injury of thorax S20.2 - Contusion of thorax S20.20 - Contusion of thorax, unspecified S20.21 - Contusion of front wall of thorax S20.211 - Contusion of right front wall of thorax S20.212 - Contusion of left front wall of thorax S20.219 - Contusion of unspecified front wall of thorax S20.22 - Contusion of back wall of thorax S20.221 - Contusion of right back wall of thorax S20.222 - Contusion of left back wall of thorax S20.229 - Contusion of unspecified back wall of thorax