If you've been told your MRI, sleep study, or spine surgery needs approval from "Carelon" before your insurance will pay for it, you're not dealing with your insurance company directly — you're dealing with a specialty review vendor your plan has hired to decide whether the service is medically necessary.
That distinction matters because it changes where you send paperwork, who you call with questions, and who you appeal to if the answer is no. Carelon isn't a single call center with one phone number; it's a group of specialty divisions, each reviewing a different slice of care on behalf of dozens of different health plans.
This guide breaks down exactly how Carelon's prior authorization process works in 2026, what typically requires review, how long a decision should take under current federal rules, and what your options are if a request comes back denied.
What Is Carelon and Why It's Reviewing Your Care
Carelon is part of Elevance Health, the same parent company behind Anthem and several independently operated Blue Cross Blue Shield plans. Rather than having every affiliated health plan build its own utilization-review department, Elevance Health centralized that function into a family of Carelon businesses that plans across the country contract with.
Two divisions matter most for prior authorization:
- Carelon Medical Benefits Management (formerly AIM Specialty Health) reviews outpatient procedures, imaging, and certain surgeries for medical necessity.
- CarelonRx (formerly IngenioRx) is the pharmacy benefit manager arm, handling drug formularies and pharmacy prior authorizations.
A third division, Carelon Behavioral Health (formerly Beacon Health Options), manages authorization for behavioral health and substance use treatment on behalf of some plans, though this guide focuses primarily on the medical and pharmacy review process.
Important: Carelon doesn't decide your benefits — your health plan does that. Carelon decides whether a specific requested service meets clinical guidelines for medical necessity under the plan's existing benefit rules.
Which Health Plans Use Carelon
Carelon's reach is broad because many independently operated insurers license its review services rather than building their own. Coverage varies by state and by product line (commercial, Medicare Advantage, Medicaid), so always confirm with your specific plan.
| Health Plan Type | Examples |
|---|---|
| Anthem / Elevance-affiliated Blue plans | Anthem Blue Cross Blue Shield (multiple states), Wellpoint-branded Medicaid plans |
| Independent Blue Cross Blue Shield licensees | Premera Blue Cross, BCBS of Texas, BCBS of Illinois, Horizon BCBS of New Jersey, Blue Cross of Idaho |
| Medicare Advantage plans | Select Medicare Advantage products administered by Carelon-affiliated insurers |
| Medicaid managed care plans | State Medicaid managed care organizations that contract with Carelon for specialty review |
Not every plan uses Carelon for every category of service — some route imaging through Carelon but keep surgical review in-house, or vice versa. The fastest way to confirm is to check your plan's provider or member portal, or call the number on your ID card.
Services and Medications That Require Carelon Review
Carelon's clinical programs are organized by specialty. Here's what's most commonly reviewed across health plans that use Carelon Medical Benefits Management and CarelonRx.
| Category | Examples | Reviewing Division |
|---|---|---|
| Advanced imaging | CT, MRI, MRA, PET scans, nuclear cardiology, echocardiography | Carelon Medical Benefits Management |
| Radiation oncology | Radiation therapy planning and treatment | Carelon Medical Benefits Management |
| Sleep medicine | Sleep studies, home sleep testing, related DME | Carelon Medical Benefits Management |
| Genetic and molecular testing | Hereditary cancer panels, pharmacogenomic testing | Carelon Medical Benefits Management |
| Musculoskeletal / spine | Spine surgery, joint procedures, interventional pain management | Carelon Medical Benefits Management |
| Post-acute inpatient management | Select post-acute facility stays and transitions of care | Carelon Medical Benefits Management |
| Specialty and select traditional drugs | Biologics, oncology infusions, high-cost specialty medications | CarelonRx |
Not required in most programs: emergency room visits, inpatient hospitalization for emergencies, and observation stays are typically excluded from Carelon's prior authorization requirements, since these are urgent by nature.
Exact CPT and drug code lists vary by plan and change periodically, so providers should always confirm requirements through the applicable code lookup tool before scheduling a service. For drug-specific prior auth guidance, see our prior authorization guides by insurance.
Carelon Medical Benefits Management vs. CarelonRx
Because these are two different divisions with separate systems, sending a request to the wrong one is one of the most common causes of delay.
| Feature | Carelon Medical Benefits Management | CarelonRx |
|---|---|---|
| What it reviews | Procedures, imaging, surgeries, testing | Prescription drugs, including specialty medications |
| Formerly known as | AIM Specialty Health | IngenioRx |
| Primary submission channel | Carelon MBM Provider Portal (providerportal.com) | Electronic prior authorization (ePA) via CoverMyMeds or Surescripts, or phone |
| Typical phone hours | Varies by plan; often weekday business hours plus weekend windows | 8 a.m.–9 p.m. ET weekdays, 10 a.m.–2 p.m. ET Saturday (pharmacy PA line) |
| Who submits requests | Ordering physician's office or facility | Prescriber's office, often through the EHR/pharmacy system |
Standard vs. Expedited Requests: Timelines Compared
Whether a request is treated as "standard" or "expedited" (urgent) significantly affects how quickly you'll get a decision. As of January 1, 2026, federal rules under the CMS Interoperability and Prior Authorization Final Rule set firm outer limits for most Medicare Advantage, Medicaid, and CHIP plans.
| Request Type | Maximum Decision Time | When It Applies |
|---|---|---|
| Standard (non-urgent) | 7 calendar days | Routine, scheduled services with no immediate health risk from waiting |
| Standard, extended | Up to 14 additional calendar days | When more clinical information is needed or an extension is in the member's interest |
| Expedited (urgent) | 72 hours | Delaying care could seriously jeopardize the patient's health or ability to function |
Good to know: These are outer limits, not typical wait times. Many Carelon online submissions with complete documentation are decided the same day using automated clinical algorithms, with more complex cases routed to a clinical reviewer.
These federal timeframes apply to Medicare Advantage organizations, Medicaid and CHIP managed care plans, and most Qualified Health Plan issuers. Fully insured commercial and self-funded employer plans may follow separate state-level or contractual timeframes, so always check your specific plan documents. For background on how this interacts with Medicare drug coverage specifically, see our Medicare Part D guide.
What You Need Before You Submit a Request
| Item | Why It's Needed |
|---|---|
| Member ID and plan information | Confirms eligibility and which review program applies |
| Ordering/rendering provider NPI | Required per CMS guidelines on the claim and authorization request |
| CPT/HCPCS or drug code for the requested service | Determines whether prior authorization is required at all |
| Clinical documentation supporting medical necessity | Diagnosis, prior treatments tried, relevant test results |
| Site of service | Some programs review whether a lower-cost setting is appropriate |
| Urgency designation | Determines whether the standard or expedited timeline applies |
How to Submit a Carelon Prior Authorization, Step by Step
Confirm prior authorization is actually required
Check member eligibility and benefits, then use the plan's code lookup tool to confirm the specific CPT or drug code needs Carelon review before scheduling anything.
Register for the correct portal
For medical/procedural requests, register at the Carelon MBM Provider Portal (providerportal.com). For pharmacy requests, use your EHR's ePA workflow or CoverMyMeds.
Submit the request with complete clinical documentation
Incomplete clinical information is the single biggest cause of delay. Include diagnosis, relevant history, prior conservative treatment, and supporting test results up front.
Mark urgency accurately
Only flag a request as expedited if delaying care would seriously risk the patient's health — misuse of the urgent designation can slow down genuinely urgent cases across the system.
Respond promptly if a peer-to-peer is requested
If Carelon's clinical reviewer needs more information, the case is placed "in progress" and will pend for a call-back. Failing to respond before the case closes typically results in a denial.
Confirm the authorization and its expiration date before scheduling
Approval notifications include an authorization number and an expiration date. Schedule the service before that date to avoid needing a new request.
Ready to submit or check a request?
Use the Carelon Medical Benefits Management provider portal for procedure and imaging requests, or call the number on the back of the member's ID card for plan-specific support.
Go to Carelon Provider Portal → See What You'll NeedHow to Check the Status of a Request
Providers can log in to the Carelon MBM Provider Portal at any time to view case status, order numbers, and any letters attached to a case. The portal is available 24/7 once registration is complete, and status updates typically post in real time as a reviewer works the case.
Members without portal access can call the customer service number on their ID card and ask whether an authorization has been issued for a specific service before scheduling it. It's worth confirming this even after a provider's office says a request was submitted, since paperwork occasionally gets misrouted between the health plan and Carelon.
Decision Tree: Do You Need Carelon Prior Authorization?
Step 1: Is this an emergency room visit, inpatient emergency admission, or observation stay?
✔ Yes → Prior authorization is not required.
✖ No → Continue to Step 2.
Step 2: Does your health plan contract with Carelon for this type of service (imaging, MSK, sleep, genetic testing, or specialty drugs)?
✔ Yes → Continue to Step 3.
✖ No → Prior authorization, if required at all, is handled directly by your health plan.
Step 3: Is the specific CPT/HCPCS or drug code on the plan's prior authorization list?
✔ Yes → Submit a request through the Carelon provider portal before scheduling.
✖ No → No prior authorization is needed for that code, but confirm benefits separately.
Approval Timelines by Request Type
| Situation | Typical Timeframe |
|---|---|
| Complete online submission, automated determination | Often same-day |
| Standard request routed to clinical reviewer | Up to 7 calendar days (2026 CMS rule for MA/Medicaid/CHIP) |
| Expedited/urgent request | Up to 72 hours |
| Case pending peer-to-peer review | Pends up to 72 hours for urgent cases after initial receipt |
| Extended standard review | Up to 14 additional days when justified |
Renewals and Retro-Authorization
Carelon authorizations aren't open-ended. Each approval includes an expiration date, and if the service isn't performed before then, a new request is typically required. For ongoing courses of treatment — such as a multi-session radiation therapy plan or a series of injections — providers should track authorized visit counts and submit a renewal request before the current approval runs out or the visit count is exhausted.
Some plans allow retrospective ("retro") authorization requests, generally within about 7 days of the date of service, but only by phone and typically only when there's a compelling reason the request wasn't submitted beforehand. Retro requests submitted after that window are usually denied without a medical necessity review, and the associated claim is denied as well.
Don't wait until the last minute. Because retro-authorization windows are short and not guaranteed, submitting the initial request well before a scheduled service is always safer than relying on a retroactive fix.
Pros and Cons of Carelon Managing Your Prior Authorization
Pros
- 24/7 online portal for submission and status checks
- Many straightforward requests get automated, same-day determinations
- Standardized clinical guidelines applied consistently across plans
- Clear peer-to-peer and reconsideration options before a formal appeal
- Federal timelines now cap how long MA/Medicaid/CHIP decisions can take
Cons
- An extra layer between your provider and your insurance company
- Contact numbers and portals vary by plan, which can be confusing
- Documentation requirements can be extensive for complex cases
- Authorizations expire and don't automatically renew
- Retro-authorization windows are short and not guaranteed
Common Mistakes That Cause Denials or Delays
- Sending a pharmacy request to Carelon Medical Benefits Management instead of CarelonRx, or vice versa
- Scheduling a service before confirming the authorization was actually approved, not just submitted
- Missing the peer-to-peer call-back window while a case is "in progress"
- Submitting incomplete clinical documentation, forcing a request into a longer review queue
- Letting an approved authorization expire before the service is performed
- Assuming a routine request qualifies as "expedited" without meeting the urgency criteria
- Not verifying which specific health plan's Carelon program applies, since requirements differ even within the same insurer's product lines
What to Do If You're Denied: Peer-to-Peer & Appeals
A denial isn't necessarily final. Most Carelon-managed programs offer a structured path to challenge a decision before it becomes permanent.
| Step | What Happens | Typical Window |
|---|---|---|
| Peer-to-peer review | Ordering physician discusses the case directly with a Carelon physician reviewer before the case closes | While case is "in progress," often up to 72 hours for urgent cases |
| Reconsideration request | Provider submits additional clinical information for a physician reviewer to re-evaluate the denial | Typically within about 10 calendar days of the denial |
| Formal appeal | Member or provider files a written appeal through the health plan, citing medical necessity | Varies by plan; commonly 60–180 days |
| External review | An independent reviewer outside the health plan evaluates the case after internal appeals are exhausted | State-specific; instructions included in the final denial letter |
Read the denial letter carefully. It specifies the exact appeal deadline, required forms, and whether the case qualifies for an expedited appeal. Missing a stated deadline can forfeit your right to further review.
Real Patient & Provider Scenarios
Scenario: Routine MRI for chronic back pain
A primary care provider orders a lumbar MRI for a patient with several months of back pain. Because conservative treatment (physical therapy, medication) hasn't yet been tried and documented, the initial request is more likely to pend for additional clinical information. Submitting physical therapy notes and imaging history up front avoids the back-and-forth.
Scenario: Urgent PET scan for suspected cancer progression
An oncologist orders a PET scan to evaluate suspected disease progression and marks the request as urgent, citing the clinical risk of delay. Properly flagged and documented, this type of request should be decided within the 72-hour expedited window rather than the standard 7-day timeframe.
Scenario: Missed authorization expiration
A patient's spine surgery is approved, but scheduling delays push the procedure past the authorization's expiration date. The facility discovers this at check-in and has to request a new authorization, delaying the surgery. Tracking expiration dates against the surgical schedule would have prevented this.