S85.4Injury of lesser saphenous vein at lower leg level

S85.4 is the ICD-10-CM diagnosis code for injury of lesser saphenous vein at lower leg level. It belongs to category S85 (injury of blood vessels at lower leg level), block S80-S89 (injuries to the knee and lower leg) and chapter 19 (injury, poisoning and certain other consequences of external causes). It is a header code, so it can't be reported by itself; one of its 3 subcodes must be used instead.

Within S85 (injury of blood vessels at lower leg level), S85.4 is specifically for injury of lesser saphenous vein at lower leg level. Related codes cover popliteal artery (S85.0), tibial artery (S85.1), peroneal artery (S85.2), greater saphenous vein at lower leg level (S85.3), popliteal vein (S85.5), other blood vessels at lower leg level (S85.8) and unspecified blood vessel at lower leg level (S85.9).

Codes in this range require a 7th character: A for initial encounter, D for subsequent encounter and S for sequela. Use placeholder "X" characters to fill any empty positions before the 7th character.

It has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.