ICD-10-CM > S00-T88 > T33-T34 > T34 > T34.5 > T34.52 > T34.522 T34.522 Frostbite with tissue necrosis of left hand Non-Billable/Non-Specific Codes T34.522A..., initial encounterT34.522D..., subsequent encounterT34.522S..., sequela