ICD-10-CM > S00-T88 > S30-S39 > S35 > S35.3 > S35.33 > S35.339 S35.339 Unspecified injury of superior mesenteric vein Non-Billable/Non-Specific Codes S35.339A..., initial encounterS35.339D..., subsequent encounterS35.339S..., sequela