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UnitedHealthcare Prior Authorization for Imaging: Phone, Portal, Forms

Where to submit a UnitedHealthcare prior authorization for MRI, CT and PET, the phone number to call, the forms and code lists, and the guidelines the reviewer uses.

UnitedHealthcare runs its outpatient radiology prior authorization program through its own provider portal, using eviCore imaging guidelines for commercial and exchange plans.

What to know

  • Prior authorization may be required for CT, MRI, MRA, PET and nuclear cardiology done as an outpatient.
  • No authorization is needed for imaging done in an emergency room, observation unit, urgent care center or during an inpatient stay.
  • Medicare Advantage and Dual Special Needs plans do not require prior authorization for CT, MRI or MRA.
  • Several plan types are excluded from the program, including Oxford, UMR, UnitedHealthcare Shared Services and some self-funded groups; the quick reference guide lists them.
  • A request needs the member ID and group number, the ordering provider's NPI and tax ID, the CPT codes, the working diagnosis with ICD-10 codes, and the clinical picture with symptoms, duration and treatments tried.

Checked against uhcprovider.com on September 29, 2026. Plans change their vendors and phone numbers; if something here is out of date, tell us.

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