Bill Advantage
CO-173Contractual Adjustment

No authorization obtained for services rendered to this patient

What this code means

A specific type of service required your insurer approval before it was performed, and your provider did not get it.

What to do next

Ask your provider whether they attempted to obtain authorization. If they did, request proof and have them resubmit. If no authorization was attempted, appeal on the grounds of medical urgency or emergency if applicable.

Appeal outlook: Moderate for emergency situations

Recommended tool

Bill Advantage can analyze your denial and generate a ready-to-send appeal or dispute letter in minutes.

Open Prior Authorization Appeal Generator

Related denial codes