ICD-10-CM > S00-T88 > T20-T25 > T25 > T25.3 > T25.39 > T25.391 T25.391 Burn of third degree of multiple sites of right ankle and foot Non-Billable/Non-Specific Codes T25.391A..., initial encounterT25.391D..., subsequent encounterT25.391S..., sequela