ICD-10-CM > S00-T88 > S60-S69 > S65 > S65.4 > S65.40 > S65.409 S65.409 Unspecified injury of blood vessel of unspecified thumb Non-Billable/Non-Specific Codes S65.409A..., initial encounterS65.409D..., subsequent encounterS65.409S..., sequela