ICD-10-CM > S00-T88 > T33-T34 > T34 > T34.8 > T34.82 T34.82 Frostbite with tissue necrosis of foot Non-Billable/Non-Specific Codes T34.821Frostbite with tissue necrosis of right footT34.821A..., initial encounterT34.821D..., subsequent encounterT34.821S..., sequelaT34.822Frostbite with tissue necrosis of left footT34.822A..., initial encounterT34.822D..., subsequent encounterT34.822S..., sequelaT34.829Frostbite with tissue necrosis of unspecified footT34.829A..., initial encounterT34.829D..., subsequent encounterT34.829S..., sequela