| T33.821 | Superficial frostbite of right foot | NON-BILLABLE CODE |
| T33.821A | Superficial frostbite of right foot, initial encounter | BILLABLE CODE |
| T33.821D | Superficial frostbite of right foot, subsequent encounter | BILLABLE CODE |
| T33.821S | Superficial frostbite of right foot, sequela | BILLABLE CODE |
| T33.822 | Superficial frostbite of left foot | NON-BILLABLE CODE |
| T33.822A | Superficial frostbite of left foot, initial encounter | BILLABLE CODE |
| T33.822D | Superficial frostbite of left foot, subsequent encounter | BILLABLE CODE |
| T33.822S | Superficial frostbite of left foot, sequela | BILLABLE CODE |
| T33.829 | Superficial frostbite of unspecified foot | NON-BILLABLE CODE |
| T33.829A | Superficial frostbite of unspecified foot, initial encounter | BILLABLE CODE |
| T33.829D | Superficial frostbite of unspecified foot, subsequent encounter | BILLABLE CODE |
| T33.829S | Superficial frostbite of unspecified foot, sequela | BILLABLE CODE |
