ICD-10-CM > S00-T88 > S80-S89 > S85 > S85.3 > S85.30 > S85.309 S85.309 Unspecified injury of greater saphenous vein at lower leg level, unspecified leg Non-Billable/Non-Specific Codes S85.309A..., initial encounterS85.309D..., subsequent encounterS85.309S..., sequela