ICD-10-CM > S00-T88 > T20-T25 > T25 > T25.0 > T25.09 > T25.099 T25.099 Burn of unspecified degree of multiple sites of unspecified ankle and foot Non-Billable/Non-Specific Codes T25.099A..., initial encounterT25.099D..., subsequent encounterT25.099S..., sequela