ICD-10-CM > S00-T88 > S60-S69 > S65 > S65.4 > S65.40 S65.40 Unspecified injury of blood vessel of thumb Non-Billable/Non-Specific Codes S65.401Unspecified injury of blood vessel of right thumbS65.401A..., initial encounterS65.401D..., subsequent encounterS65.401S..., sequelaS65.402Unspecified injury of blood vessel of left thumbS65.402A..., initial encounterS65.402D..., subsequent encounterS65.402S..., sequelaS65.409Unspecified injury of blood vessel of unspecified thumbS65.409A..., initial encounterS65.409D..., subsequent encounterS65.409S..., sequela