ICD-10-CM > S00-T88 > S60-S69 > S61 > S61.4 > S61.40 > S61.409 S61.409 Unspecified open wound of unspecified hand Non-Billable/Non-Specific Codes S61.409A..., initial encounterS61.409D..., subsequent encounterS61.409S..., sequela