ICD-10-CM > S00-T88 > T33-T34 > T33 > T33.9 > T33.99 T33.99 Superficial frostbite of other sites Non-Billable/Non-Specific Applicable To Superficial frostbite of leg NOSSuperficial frostbite of trunk NOS Codes T33.99XA..., initial encounterT33.99XD..., subsequent encounterT33.99XS..., sequela