| S20.461 | Insect bite (nonvenomous) of right back wall of thorax | NON-BILLABLE CODE |
| S20.461A | Insect bite (nonvenomous) of right back wall of thorax, initial encounter | BILLABLE CODE |
| S20.461D | Insect bite (nonvenomous) of right back wall of thorax, subsequent encounter | BILLABLE CODE |
| S20.461S | Insect bite (nonvenomous) of right back wall of thorax, sequela | BILLABLE CODE |
| S20.462 | Insect bite (nonvenomous) of left back wall of thorax | NON-BILLABLE CODE |
| S20.462A | Insect bite (nonvenomous) of left back wall of thorax, initial encounter | BILLABLE CODE |
| S20.462D | Insect bite (nonvenomous) of left back wall of thorax, subsequent encounter | BILLABLE CODE |
| S20.462S | Insect bite (nonvenomous) of left back wall of thorax, sequela | BILLABLE CODE |
| S20.469 | Insect bite (nonvenomous) of unspecified back wall of thorax | NON-BILLABLE CODE |
| S20.469A | Insect bite (nonvenomous) of unspecified back wall of thorax, initial encounter | BILLABLE CODE |
| S20.469D | Insect bite (nonvenomous) of unspecified back wall of thorax, subsequent encounter | BILLABLE CODE |
| S20.469S | Insect bite (nonvenomous) of unspecified back wall of thorax, sequela | BILLABLE CODE |
