UnitedHealthcare MRI Lumbar Spine without contrast prior authorization requirements (2026)
What UnitedHealthcare generally requires to approve MRI Lumbar Spine without contrast (CPT 72148), for Commercial plans. Yes. UnitedHealthcare generally requires prior authorization for MRI Lumbar Spine without contrast (CPT 72148).
Medical-necessity criteria UnitedHealthcare generally applies
Lumbar spine MRI is appropriate (per ACR Appropriateness Criteria for Low Back Pain) when EITHER: (a) low back pain has persisted or progressed despite at least 6 weeks of conservative management and the patient is a surgical or interventional candidate or diagnostic uncertainty remains; (b) radiculopathy has lasted more than 6 weeks with failed conservative management; or (c) red flags suggest a serious underlying condition (cauda equina syndrome, suspected malignancy, infection, or severe/progressive neurologic deficit). Document the conservative-care trial (type and duration) and any red-flag findings.
Situations to verify before submitting
UnitedHealthcare may not cover MRI Lumbar Spine without contrast in these situations. Verify against the current policy rather than assuming a denial:
- {"text":"Routine, uncomplicated acute low back pain of less than 6 weeks duration without red flags or neurologic deficit (imaging not indicated per ACR criteria)","source":"ACR Appropriateness Criteria: Low Back Pain (2021 Update)"}
Sources & verification
- BindingSource — Radiology prior authorization (UHCprovider.com) · effective 2025-02-01.View
Binding = the payer's own policy. Proxy = a public, evidence-based clinical guideline the payer mirrors. Portal-only = the binding criteria are confirmed in the administrator's portal. Always confirm against the payer for the member's specific plan. Last verified 2026-06-12.
Frequently asked questions
Does UnitedHealthcare require prior authorization for MRI Lumbar Spine without contrast?
Yes. UnitedHealthcare generally requires prior authorization for MRI Lumbar Spine without contrast (CPT 72148).
What does UnitedHealthcare require to approve MRI Lumbar Spine without contrast?
Lumbar spine MRI is appropriate (per ACR Appropriateness Criteria for Low Back Pain) when EITHER: (a) low back pain has persisted or progressed despite at least 6 weeks of conservative management and the patient is a surgical or interventional candidate or diagnostic uncertainty remains; (b) radiculopathy has lasted more than 6 weeks with failed conservative management; or (c) red flags suggest a … Always confirm against the current UnitedHealthcare policy.
How long does a UnitedHealthcare prior authorization take?
Turnaround varies by plan and submission method. Check the UnitedHealthcare portal for current timeframes.
Submitting MRI Lumbar Spine without contrast to UnitedHealthcare?
Praxigen checks your clinical note against these criteria before you submit and drafts a policy-cited appeal if it is denied. You review and submit; nothing is sent automatically.