| ICD-10 Code | Description |
| S20.401A | Unspecified superficial injuries of right back wall of thorax, initial encounter |
| S20.401D | Unspecified superficial injuries of right back wall of thorax, subsequent encounter |
| S20.401S | Unspecified superficial injuries of right back wall of thorax, sequela |
| S20.402A | Unspecified superficial injuries of left back wall of thorax, initial encounter |
| S20.402D | Unspecified superficial injuries of left back wall of thorax, subsequent encounter |
| S20.402S | Unspecified superficial injuries of left back wall of thorax, sequela |
| S20.409A | Unspecified superficial injuries of unspecified back wall of thorax, initial encounter |
| S20.409D | Unspecified superficial injuries of unspecified back wall of thorax, subsequent encounter |
| S20.409S | Unspecified superficial injuries of unspecified back wall of thorax, sequela |
| S20.411A | Abrasion of right back wall of thorax, initial encounter |
| S20.411D | Abrasion of right back wall of thorax, subsequent encounter |
| S20.411S | Abrasion of right back wall of thorax, sequela |
| S20.412A | Abrasion of left back wall of thorax, initial encounter |
| S20.412D | Abrasion of left back wall of thorax, subsequent encounter |
| S20.412S | Abrasion of left back wall of thorax, sequela |
| S20.419A | Abrasion of unspecified back wall of thorax, initial encounter |
| S20.419D | Abrasion of unspecified back wall of thorax, subsequent encounter |
| S20.419S | Abrasion of unspecified back wall of thorax, sequela |
| S20.421A | Blister (nonthermal) of right back wall of thorax, initial encounter |
| S20.421D | Blister (nonthermal) of right back wall of thorax, subsequent encounter |
| S20.421S | Blister (nonthermal) of right back wall of thorax, sequela |
| S20.422A | Blister (nonthermal) of left back wall of thorax, initial encounter |
| S20.422D | Blister (nonthermal) of left back wall of thorax, subsequent encounter |
| S20.422S | Blister (nonthermal) of left back wall of thorax, sequela |
| S20.429A | Blister (nonthermal) of unspecified back wall of thorax, initial encounter |
| S20.429D | Blister (nonthermal) of unspecified back wall of thorax, subsequent encounter |
| S20.429S | Blister (nonthermal) of unspecified back wall of thorax, sequela |
| S20.441A | External constriction of right back wall of thorax, initial encounter |
| S20.441D | External constriction of right back wall of thorax, subsequent encounter |
| S20.441S | External constriction of right back wall of thorax, sequela |
| S20.442A | External constriction of left back wall of thorax, initial encounter |
| S20.442D | External constriction of left back wall of thorax, subsequent encounter |
| S20.442S | External constriction of left back wall of thorax, sequela |
| S20.449A | External constriction of unspecified back wall of thorax, initial encounter |
| S20.449D | External constriction of unspecified back wall of thorax, subsequent encounter |
| S20.449S | External constriction of unspecified back wall of thorax, sequela |
| S20.451A | Superficial foreign body of right back wall of thorax, initial encounter |
| S20.451D | Superficial foreign body of right back wall of thorax, subsequent encounter |
| S20.451S | Superficial foreign body of right back wall of thorax, sequela |
| S20.452A | Superficial foreign body of left back wall of thorax, initial encounter |
| S20.452D | Superficial foreign body of left back wall of thorax, subsequent encounter |
| S20.452S | Superficial foreign body of left back wall of thorax, sequela |
| S20.459A | Superficial foreign body of unspecified back wall of thorax, initial encounter |
| S20.459D | Superficial foreign body of unspecified back wall of thorax, subsequent encounter |
| S20.459S | Superficial foreign body of unspecified back wall of thorax, sequela |
| S20.461A | Insect bite (nonvenomous) of right back wall of thorax, initial encounter |
| S20.461D | Insect bite (nonvenomous) of right back wall of thorax, subsequent encounter |
| S20.461S | Insect bite (nonvenomous) of right back wall of thorax, sequela |
| S20.462A | Insect bite (nonvenomous) of left back wall of thorax, initial encounter |
| S20.462D | Insect bite (nonvenomous) of left back wall of thorax, subsequent encounter |
| S20.462S | Insect bite (nonvenomous) of left back wall of thorax, sequela |
| S20.469A | Insect bite (nonvenomous) of unspecified back wall of thorax, initial encounter |
| S20.469D | Insect bite (nonvenomous) of unspecified back wall of thorax, subsequent encounter |
| S20.469S | Insect bite (nonvenomous) of unspecified back wall of thorax, sequela |
| S20.471A | Other superficial bite of right back wall of thorax, initial encounter |
| S20.471D | Other superficial bite of right back wall of thorax, subsequent encounter |
| S20.471S | Other superficial bite of right back wall of thorax, sequela |
| S20.472A | Other superficial bite of left back wall of thorax, initial encounter |
| S20.472D | Other superficial bite of left back wall of thorax, subsequent encounter |
| S20.472S | Other superficial bite of left back wall of thorax, sequela |
| S20.479A | Other superficial bite of unspecified back wall of thorax, initial encounter |
| S20.479D | Other superficial bite of unspecified back wall of thorax, subsequent encounter |
| S20.479S | Other superficial bite of unspecified back wall of thorax, sequela |
