ICD-10-CM > S00-T88 > T20-T25 > T20 > T20.2 > T20.29 T20.29 Burn of second degree of multiple sites of head, face, and neck Non-Billable/Non-Specific Codes T20.29XA..., initial encounterT20.29XD..., subsequent encounterT20.29XS..., sequela