ICD-10-CM > S00-T88 > T20-T25 > T24 > T24.1 > T24.13 T24.13 Burn of first degree of lower leg Non-Billable/Non-Specific Codes T24.131Burn of first degree of right lower legT24.131A..., initial encounterT24.131D..., subsequent encounterT24.131S..., sequelaT24.132Burn of first degree of left lower legT24.132A..., initial encounterT24.132D..., subsequent encounterT24.132S..., sequelaT24.139Burn of first degree of unspecified lower legT24.139A..., initial encounterT24.139D..., subsequent encounterT24.139S..., sequela