ICD-10-CM > S00-T88 > T20-T25 > T23 > T23.1 > T23.13 T23.13 Burn of first degree of multiple fingers (nail), not including thumb Non-Billable/Non-Specific Codes T23.131Burn of first degree of multiple right fingers (nail), not including thumbT23.131A..., initial encounterT23.131D..., subsequent encounterT23.131S..., sequelaT23.132Burn of first degree of multiple left fingers (nail), not including thumbT23.132A..., initial encounterT23.132D..., subsequent encounterT23.132S..., sequelaT23.139Burn of first degree of unspecified multiple fingers (nail), not including thumbT23.139A..., initial encounterT23.139D..., subsequent encounterT23.139S..., sequela