ICD-10-CM > S00-T88 > T20-T25 > T25 > T25.1 > T25.19 > T25.199 T25.199 Burn of first degree of multiple sites of unspecified ankle and foot Non-Billable/Non-Specific Codes T25.199A..., initial encounterT25.199D..., subsequent encounterT25.199S..., sequela