ICD-10-CM > S00-T88 > S60-S69 > S61 > S61.1 > S61.10 S61.10 Unspecified open wound of thumb with damage to nail Non-Billable/Non-Specific Codes S61.101Unspecified open wound of right thumb with damage to nailS61.101A..., initial encounterS61.101D..., subsequent encounterS61.101S..., sequelaS61.102Unspecified open wound of left thumb with damage to nailS61.102A..., initial encounterS61.102D..., subsequent encounterS61.102S..., sequelaS61.109Unspecified open wound of unspecified thumb with damage to nailS61.109A..., initial encounterS61.109D..., subsequent encounterS61.109S..., sequela