ICD-10-CM > S00-T88 > T20-T25 > T20 > T20.0 > T20.09 T20.09 Burn of unspecified degree of multiple sites of head, face, and neck Non-Billable/Non-Specific Codes T20.09XA..., initial encounterT20.09XD..., subsequent encounterT20.09XS..., sequela