| T33.70 | Superficial frostbite of unspecified knee and lower leg | NON-BILLABLE CODE |
| T33.70XA | Superficial frostbite of unspecified knee and lower leg, initial encounter | BILLABLE CODE |
| T33.70XD | Superficial frostbite of unspecified knee and lower leg, subsequent encounter | BILLABLE CODE |
| T33.70XS | Superficial frostbite of unspecified knee and lower leg, sequela | BILLABLE CODE |
| T33.71 | Superficial frostbite of right knee and lower leg | NON-BILLABLE CODE |
| T33.71XA | Superficial frostbite of right knee and lower leg, initial encounter | BILLABLE CODE |
| T33.71XD | Superficial frostbite of right knee and lower leg, subsequent encounter | BILLABLE CODE |
| T33.71XS | Superficial frostbite of right knee and lower leg, sequela | BILLABLE CODE |
| T33.72 | Superficial frostbite of left knee and lower leg | NON-BILLABLE CODE |
| T33.72XA | Superficial frostbite of left knee and lower leg, initial encounter | BILLABLE CODE |
| T33.72XD | Superficial frostbite of left knee and lower leg, subsequent encounter | BILLABLE CODE |
| T33.72XS | Superficial frostbite of left knee and lower leg, sequela | BILLABLE CODE |
