ICD-10-CM > S00-T88 > T20-T25 > T23 > T23.0 > T23.02 > T23.022 T23.022 Burn of unspecified degree of single left finger (nail) except thumb Non-Billable/Non-Specific Codes T23.022A..., initial encounterT23.022D..., subsequent encounterT23.022S..., sequela