ICD-10-CM > S00-T88 > T20-T25 > T24 > T24.2 > T24.20 > T24.209 T24.209 Burn of second degree of unspecified site of unspecified lower limb, except ankle and foot Non-Billable/Non-Specific Codes T24.209A..., initial encounterT24.209D..., subsequent encounterT24.209S..., sequela