Radiology Question for the Week of February 9, 2026

Question:

I’ve heard that starting this year, there will be new territories for the 2026 lower extremity revascularization code set as part of the overhaul. Is this true?

Answer:

Yes, starting in 2026, the arteries will be divided into four unique territories:

• Iliac – three arteries (common iliac, external iliac, internal iliac) (37254–37262)
• Common femoral/popliteal – two arteries (common femoral/profunda femoris and superficial femoral/popliteal) (37263–37279)
• Tibial and peroneal – three vessels (anterior tibial, posterior tibial, and peroneal) (37280–37295): For coding purposes, the tibioperoneal trunk is considered part of either the posterior tibial or peroneal artery and is not a separate vessel unless it is the only vessel treated.
• Inframalleolar – two arteries (dorsalis pedis and plantar) (37296–37299)

Understand that the inframalleolar territory includes the dorsalis pedis and plantar arteries. Note that the pedal arch is considered part of the dorsalis pedis or plantar arteries and not a separate vessel. The exception to this rule is when it is the only vessel treated.