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