ICD-10-CM > S00-T88 > T33-T34 > T33 > T33.5 > T33.52 > T33.529 T33.529 Superficial frostbite of unspecified hand Non-Billable/Non-Specific Codes T33.529A..., initial encounterT33.529D..., subsequent encounterT33.529S..., sequela