ICD-10-CM > S00-T88 > S60-S69 > S61 > S61.1 > S61.10 > S61.109 S61.109 Unspecified open wound of unspecified thumb with damage to nail Non-Billable/Non-Specific Codes S61.109A..., initial encounterS61.109D..., subsequent encounterS61.109S..., sequela