| S20.121 | Blister (nonthermal) of breast, right breast | NON-BILLABLE CODE |
| S20.121A | Blister (nonthermal) of breast, right breast, initial encounter | BILLABLE CODE |
| S20.121D | Blister (nonthermal) of breast, right breast, subsequent encounter | BILLABLE CODE |
| S20.121S | Blister (nonthermal) of breast, right breast, sequela | BILLABLE CODE |
| S20.122 | Blister (nonthermal) of breast, left breast | NON-BILLABLE CODE |
| S20.122A | Blister (nonthermal) of breast, left breast, initial encounter | BILLABLE CODE |
| S20.122D | Blister (nonthermal) of breast, left breast, subsequent encounter | BILLABLE CODE |
| S20.122S | Blister (nonthermal) of breast, left breast, sequela | BILLABLE CODE |
| S20.129 | Blister (nonthermal) of breast, unspecified breast | NON-BILLABLE CODE |
| S20.129A | Blister (nonthermal) of breast, unspecified breast, initial encounter | BILLABLE CODE |
| S20.129D | Blister (nonthermal) of breast, unspecified breast, subsequent encounter | BILLABLE CODE |
| S20.129S | Blister (nonthermal) of breast, unspecified breast, sequela | BILLABLE CODE |
