ICD-10-CM > S00-T88 > T20-T25 > T25 > T25.1 > T25.13 > T25.139 T25.139 Burn of first degree of unspecified toe(s) (nail) Non-Billable/Non-Specific Codes T25.139A..., initial encounterT25.139D..., subsequent encounterT25.139S..., sequela