ICD-10-CM > S00-T88 > T20-T25 > T24 > T24.1 T24.1 Burn of first degree of lower limb, except ankle and foot Non-Billable/Non-Specific Use Additional external cause code to identify the source, place and intent of the burn (X00-X19, X75-X77, X96-X98, Y92) Codes T24.10Burn of first degree of unspecified site of lower limb, except ankle and footT24.101Burn of first degree of unspecified site of right lower limb, except ankle and footT24.101A..., initial encounterT24.101D..., subsequent encounterT24.101S..., sequelaT24.102Burn of first degree of unspecified site of left lower limb, except ankle and footT24.102A..., initial encounterT24.102D..., subsequent encounterT24.102S..., sequelaT24.109Burn of first degree of unspecified site of unspecified lower limb, except ankle and footT24.109A..., initial encounterT24.109D..., subsequent encounterT24.109S..., sequelaT24.11Burn of first degree of thighT24.111Burn of first degree of right thighT24.111A..., initial encounterT24.111D..., subsequent encounterT24.111S..., sequelaT24.112Burn of first degree of left thighT24.112A..., initial encounterT24.112D..., subsequent encounterT24.112S..., sequelaT24.119Burn of first degree of unspecified thighT24.119A..., initial encounterT24.119D..., subsequent encounterT24.119S..., sequelaT24.12Burn of first degree of kneeT24.121Burn of first degree of right kneeT24.121A..., initial encounterT24.121D..., subsequent encounterT24.121S..., sequelaT24.122Burn of first degree of left kneeT24.122A..., initial encounterT24.122D..., subsequent encounterT24.122S..., sequelaT24.129Burn of first degree of unspecified kneeT24.129A..., initial encounterT24.129D..., subsequent encounterT24.129S..., sequelaT24.13Burn of first degree of lower legT24.131Burn 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..., sequelaT24.19Burn of first degree of multiple sites of lower limb, except ankle and footT24.191Burn of first degree of multiple sites of right lower limb, except ankle and footT24.191A..., initial encounterT24.191D..., subsequent encounterT24.191S..., sequelaT24.192Burn of first degree of multiple sites of left lower limb, except ankle and footT24.192A..., initial encounterT24.192D..., subsequent encounterT24.192S..., sequelaT24.199Burn of first degree of multiple sites of unspecified lower limb, except ankle and footT24.199A..., initial encounterT24.199D..., subsequent encounterT24.199S..., sequela