What Is Changing with UHC Radiology Prior Authorization in October 2026?
As of October 1, 2026, UnitedHealthcare requires prior authorization for certain outpatient radiology services on Surest fully insured and level funded plans. These imaging procedures were already under prior authorization requirements for other UHC commercial plans, and this change standardizes the approach across Surest membership. Radiology practices rendering advanced imaging for Surest members must obtain authorization before scheduling or performing covered procedures.
- What is affected: Advanced outpatient imaging services including CT, MRI, PET, and nuclear medicine studies on Surest plans. The CPT code list mirrors the existing UHC commercial radiology prior authorization program.
- Who needs to act: Ordering physicians must obtain prior authorization before scheduling, and rendering providers must confirm authorization has been issued before performing the study.
- What happens if you miss it: Claims submitted without a prior authorization number for covered imaging services will receive administrative denials, regardless of medical necessity or clinical appropriateness.
What the Surest Plan Change Covers
UnitedHealthcare announced on June 22, 2026, that beginning October 1, 2026, Surest fully insured and level funded plans will require prior authorization for the same outpatient radiology services that already require authorization under other UHC commercial plans. The affected imaging modalities include CT scans, MRI studies, PET scans, nuclear medicine procedures, and other advanced imaging services listed in the UHC prior authorization code list.
This is not a new prior authorization program. It is an expansion of the existing UHC outpatient radiology prior authorization protocol to a plan type that was previously exempt. The CPT codes, submission requirements, and decision timelines are the same ones already in effect for UHC commercial and exchange plans. Practices that already handle UHC commercial radiology prior auth are running the same workflow, just for a larger patient pool.
Alongside the Surest expansion, UnitedHealthcare published updated Cardiovascular and Radiology Imaging Guidelines effective September 1, 2026, and October 1, 2026. These guideline updates affect coverage criteria and documentation requirements across all UHC commercial and exchange plan types, not just Surest.
Does This Apply to My Radiology Practice?
This change applies to any radiology practice that renders advanced outpatient imaging for patients enrolled in a UHC Surest fully insured or level funded plan. If your practice currently performs CT, MRI, PET, or nuclear medicine studies and accepts UHC Surest patients, you need a prior authorization workflow in place before October 1, 2026.
The prior authorization requirement does not apply to imaging performed in an emergency department or during an inpatient admission. It also does not apply to basic radiography (X-rays) or standard ultrasound studies. The requirement targets advanced outpatient imaging, which is the same scope as the existing UHC commercial radiology prior auth program.
The most common issue we see providers run into with payer-specific prior authorization is not knowing which plan type a patient is on until the claim denies. Surest plans are a relatively newer product in the UHC portfolio, and many front-desk teams do not yet flag them differently from other UHC commercial plans. After October 1, that distinction matters, because imaging rendered without auth on a Surest plan will deny even if the same study would have processed without auth on the patient’s prior plan.
Surest Radiology Auth: Before vs. After October 1
| Before October 1, 2026 | After October 1, 2026 | |
| Advanced imaging (CT, MRI, PET) | No prior auth required for Surest plans | Prior auth required, same protocol as UHC commercial |
| Basic imaging (X-ray, ultrasound) | No prior auth | No prior auth (unchanged) |
| Emergency imaging | Exempt | Exempt (unchanged) |
| Submission channel | N/A for Surest | UHC Provider Portal or 278 EDI transaction |
| Decision timeline | N/A for Surest | 15 calendar days standard, 72 hours urgent |
What Should Radiology Practices Do Before October 1?
The operational preparation is straightforward if your practice already manages UHC commercial prior auth. If it does not, this is the step list to get the workflow in place before the effective date.
- Confirm which patients in your upcoming schedule are on Surest fully insured or level funded plans by checking eligibility through the UHC Provider Portal or your clearinghouse.
- Register for the UHC Provider Portal if your practice does not already have access, and ensure your staff can use the Prior Authorization and Notification tool.
- Pull the current UHC radiology prior authorization CPT code list from the UHC radiology prior authorization resource page and load it into your scheduling and billing system so flagging is automatic.
- Build a verification step into the scheduling workflow: before any advanced imaging study is scheduled for a UHC member, check whether the plan type requires prior auth and whether authorization has been obtained.
- Train front-desk and scheduling staff to identify Surest plan types on the insurance card and route them through the prior auth workflow before the study is performed.
- Assign responsibility for tracking authorization status, because the rendering provider is liable for confirming authorization was issued before performing the study, even when the ordering physician initiated the request.
Prior authorization is the single largest administrative burden in radiology billing, and a single missed auth on an advanced imaging study is a guaranteed denial. If your team cannot keep up with the volume of payer-specific auth requirements, a radiology billing partner handles the workflow so your staff focuses on patient care. Billing Service Quotes matches radiology practices with vetted billing companies at no cost.
Common Prior Auth Mistakes in Radiology Billing
Across the billing companies we vet, prior authorization errors on imaging claims follow the same patterns regardless of the payer. These are the mistakes that cost radiology practices the most, and they are the ones most likely to spike after October 1 when Surest plans enter the prior auth workflow.
- Assuming the ordering physician handled auth when no confirmation number exists on file. The rendering provider is responsible for verifying authorization before performing the study.
- Submitting the prior auth request after the study has already been performed. Retrospective authorization requests are denied by most UHC plans except in genuine emergencies.
- Using the wrong CPT code on the auth request and then billing a different code on the claim. The authorized procedure must match the performed and billed procedure.
- Failing to check whether the patient’s specific UHC plan type requires prior auth. UHC operates multiple plan types with different auth requirements, and the CPT 74176 CT abdomen and pelvis that processes cleanly on one UHC plan may deny on another.
- Letting an authorization expire before the study is scheduled. UHC authorizations are valid for a defined period, and a study performed after the auth window closes denies as unauthorized.
Managing Radiology Prior Auth: In-House vs. Outsourced
Whether to handle prior authorization in-house or through a billing partner depends on imaging volume and the number of payers that require auth. A single-modality outpatient imaging center with a manageable payer mix may track authorizations internally. A multi-site radiology group performing CT, MRI, PET, and nuclear medicine across a dozen commercial payers, each with its own auth rules and portal, is spending staff hours on a process that scales poorly.
In our experience matching providers with billing partners, radiology practices that outsource prior auth to a specialized partner see two things improve immediately: the denial rate on unauthorized imaging drops, and the scheduling bottleneck caused by waiting on auth decisions shrinks. The billing partner’s team is on the portal daily, knows the payer’s documentation requirements, and escalates urgent requests before they time out. That is not a capability most in-house billing teams can maintain across every payer simultaneously.
The ACR appropriateness criteria remain the clinical foundation for demonstrating that an imaging study is medically necessary. A billing partner who aligns the auth request with ACR criteria at submission reduces the chance of a clinical denial, which is harder to overturn than an administrative one.
Frequently Asked Questions
No. UHC requires prior auth for advanced outpatient imaging services such as CT, MRI, PET, and nuclear medicine. Basic radiography and standard ultrasound are not included. Emergency imaging is exempt regardless of plan type.
Surest is a UnitedHealthcare plan product offered as fully insured or level funded coverage. It uses a different cost-sharing model than traditional copay and deductible plans. Starting October 1, 2026, Surest plans require prior authorization for advanced outpatient radiology services.
Submit through the Prior Authorization and Notification tool in the UHC Provider Portal at UHCprovider.com, or via a 278 EDI transaction from your EHR or clearinghouse. Phone requests can be made at 866-889-8054 for urgent cases.
The claim will receive an administrative denial. UHC does not retroactively authorize imaging studies that were performed without prior auth unless the study was performed in a genuine emergency. The denial applies regardless of medical necessity.
UHC’s Gold Card program allows qualifying provider groups to bypass full review on select codes. Whether the program extends to Surest plan radiology services should be confirmed directly with your UHC representative, as eligibility criteria may differ by plan type.
UnitedHealthcare published updated Cardiovascular and Radiology Imaging Guidelines with effective dates of September 1, 2026, and October 1, 2026. These apply to commercial and exchange plans and affect coverage criteria for imaging services across plan types. Review the current guidelines on the UHC radiology prior authorization page.
Next Steps
- Need to understand how CT billing works with prior auth? See our CPT 74176 CT abdomen and pelvis billing guide.
- Reviewing clinical appropriateness criteria for auth submissions? See our ACR imaging guidelines overview.
- Billing a chest X-ray under CPT 71046? Basic radiography is not affected by this prior auth expansion.
- Ready to hand radiology prior auth off to a specialist? Get matched with vetted radiology billing companies at no cost.
UHC’s October 1 prior authorization expansion for Surest plans is one more rule your billing team has to track across an already complex payer landscape. A specialized radiology billing partner manages prior auth for every payer, enforces the workflow before the study is scheduled, and catches the administrative denials that cost your practice real money. Billing Service Quotes matches radiology practices with vetted billing companies at no cost across all 50 states.
