ICD-10-CM > S00-T88 > T20-T25 > T24 > T24.3 > T24.33 > T24.339 T24.339 Burn of third degree of unspecified lower leg Non-Billable/Non-Specific Codes T24.339A..., initial encounterT24.339D..., subsequent encounterT24.339S..., sequela