ICD-10-CM > S00-T88 > T20-T25 > T24 > T24.2 > T24.23 > T24.239 T24.239 Burn of second degree of unspecified lower leg Non-Billable/Non-Specific Codes T24.239A..., initial encounterT24.239D..., subsequent encounterT24.239S..., sequela