| S40.821 | Blister (nonthermal) of right upper arm | NON-BILLABLE CODE |
| S40.821A | Blister (nonthermal) of right upper arm, initial encounter | BILLABLE CODE |
| S40.821D | Blister (nonthermal) of right upper arm, subsequent encounter | BILLABLE CODE |
| S40.821S | Blister (nonthermal) of right upper arm, sequela | BILLABLE CODE |
| S40.822 | Blister (nonthermal) of left upper arm | NON-BILLABLE CODE |
| S40.822A | Blister (nonthermal) of left upper arm, initial encounter | BILLABLE CODE |
| S40.822D | Blister (nonthermal) of left upper arm, subsequent encounter | BILLABLE CODE |
| S40.822S | Blister (nonthermal) of left upper arm, sequela | BILLABLE CODE |
| S40.829 | Blister (nonthermal) of unspecified upper arm | NON-BILLABLE CODE |
| S40.829A | Blister (nonthermal) of unspecified upper arm, initial encounter | BILLABLE CODE |
| S40.829D | Blister (nonthermal) of unspecified upper arm, subsequent encounter | BILLABLE CODE |
| S40.829S | Blister (nonthermal) of unspecified upper arm, sequela | BILLABLE CODE |
