ICD-10-CM > S00-T88 > T33-T34 > T34 > T34.5 > T34.51 > T34.511 T34.511 Frostbite with tissue necrosis of right wrist Non-Billable/Non-Specific Codes T34.511A..., initial encounterT34.511D..., subsequent encounterT34.511S..., sequela