ICD-10-CM > S00-T88 > T20-T25 > T24 > T24.1 > T24.10 > T24.109 T24.109 Burn of first degree of unspecified site of unspecified lower limb, except ankle and foot Non-Billable/Non-Specific Codes T24.109A..., initial encounterT24.109D..., subsequent encounterT24.109S..., sequela