Material adverse change


This communication applies to the Commercial and Medicare Advantage programs from
Anthem Blue Cross and Blue Shield (Anthem).


Effective for dates of service on and after September 11, 2022, the following updates will apply to the AIM Specialty Health advanced imaging clinical appropriateness guidelines. As part of the AIM guideline annual review process, these updates are focused on advancing efforts to drive clinically appropriate, safe, and affordable health care services.


Updates by Guideline

Imaging of the Spine:

  • Perioperative and periprocedural imaging – added requirement for initial evaluation with radiographs


Imaging of the Extremities:

  • Trauma – added CT as an alternative to MRI for tibial plateau fracture; added indication for evaluation of supracondylar fracture
  • Rotator cuff tear – combined acute and chronic rotator cuff tear criteria; standardized conservative management duration to 6 weeks
  • Shoulder arthroplasty – modified language to clarify intent regarding limited scenarios where advanced imaging is indicated for total shoulder arthroplasty
  • Perioperative imaging – excluded robotic-assisted hip arthroplasty as robotic-assisted surgery in general does not provide net benefit over conventional arthroplasty


Vascular Imaging:

  • Stenosis or occlusion, extracranial carotid arteries: New indications for post neck irradiation, incidental carotid calcification scenarios.
  • Stroke/TIA, extracranial evaluation: Subacute stroke/TIA: CTA/MRA Neck allowed without prerequisite ultrasound (US), in alignment with 2021 AHA/ASA guidelines.
  • Chronic stroke/TIA: New indication; modality approach by circulation presentation.
  • Pulmonary Embolism - Removal of nondiagnostic CXR requirement (lower threshold for elevated D-dimer scenarios, thrombosis related to COVID infection, etc).
  • Imaging study modality and/or site expansion: Pulsatile Tinnitus, Acute Aortic Syndrome, Abdominal venous thrombosis
  • Stenosis or occlusion, extracranial carotid arteries: Post-revascularization scenario aligned with SVS guidelines to allow annual surveillance regardless of residual stenosis.
  • Aneurysm of the abdominal aorta or iliac arteries: Management/surveillance scenarios aligned with SVS guidelines.
  • Upper or Lower Extremity Peripheral arterial disease (PAD):
    • Suspected PAD without physiologic testing (including exercise testing) not indicated
    • New indication for Popliteal artery aneurysm US surveillance post-repair (2021 SVS guidelines)


  • Access AIM’s ProviderPortalSM directly at
    • Online access is available 24/7 to process orders in real-time and is the fastest and most convenient way to request authorization.
  • Access AIM via the Availity Web Portal at
  • Call the AIM Contact Center toll-free number: 866-714-1103, Monday through Friday, from 8:00 a.m. to 6:00 p.m.


For questions related to guidelines, please contact AIM via email at Additionally, you may access and download a copy of the current and upcoming guidelines here.



Featured In:
June 2022 Anthem Provider News - Georgia