ICD-10-CM > S00-T88 > T33-T34 > T33 > T33.8 > T33.82 T33.82 Superficial frostbite of foot Non-Billable/Non-Specific Codes T33.821Superficial frostbite of right footT33.821A..., initial encounterT33.821D..., subsequent encounterT33.821S..., sequelaT33.822Superficial frostbite of left footT33.822A..., initial encounterT33.822D..., subsequent encounterT33.822S..., sequelaT33.829Superficial frostbite of unspecified footT33.829A..., initial encounterT33.829D..., subsequent encounterT33.829S..., sequela