Who this is for
Patients, caregivers, and healthcare workers explaining delays, denials, and approval requirements for covered care.
60-second summary
Prior authorization is a plan requirement to approve certain drugs, tests, procedures, equipment, or post-acute services before coverage is confirmed. A clinician's recommendation does not guarantee plan approval. Delays often involve missing documentation, unmet criteria, coding or site-of-care issues, network rules, or a request that has not been submitted. Ask for the request date, reference number, status, reason, required documentation, and appeal or urgent-review pathway.
Fact sheet
The direct answer
Prior authorization is an insurer or benefit-plan review that may be required before the plan agrees to cover a service or medication.
- The ordering clinician usually supplies clinical documentation, diagnosis codes, prior treatments, and the requested service details.
- The plan compares the request with its coverage criteria and may approve, request more information, redirect care, or deny coverage.
- A pending request is different from a denied request, and an unsubmitted request is different from both.
- Urgent-review and appeal options may exist when delay could jeopardize health or recovery.
Prior authorization
A health plan decision that a service, treatment plan, prescription drug, or DME is medically necessary before the plan covers it.
- Also called preauthorization, prior approval, or precertification.
- Often applies to expensive imaging, procedures, medications, home services, equipment, and facility care.
- Usually does not apply the same way in emergencies.
- Approval does not always guarantee final payment.
Why it delays care
- The provider may need to submit records, diagnosis codes, clinical notes, and medical necessity documentation.
- The insurer may request more information.
- A request can be approved, denied, partially approved, or redirected to a different service or site of care.
- Timing can affect discharge planning, imaging, procedures, medications, home health, rehab, or DME.
Approval is not a blank check
- The patient may still owe deductible, copay, or coinsurance.
- The provider and facility still need to be in-network when required.
- The final claim must be coded and billed correctly.
- The patient must still be eligible and covered on the date of service.
- A different service than the one approved may process differently.
What to ask
- Does this require prior authorization?
- Who is responsible for submitting it?
- Has it been approved, denied, or still pending?
- What service, date range, provider, and location were approved?
- What is the authorization number?
- What will I owe after deductible, copay, or coinsurance?
The MRI that is ordered but not approved yet
A clinician orders an MRI for back pain. The imaging center schedules it, but the insurer requires prior authorization. If the patient gets the MRI before approval, the plan may deny or delay payment. The safer path is to confirm the authorization number, approved location, and expected patient cost before the appointment when possible.
A practical review process
- Confirm whether prior authorization is required for the exact service, medication, equipment, facility, and provider.
- Ask the ordering office when the request was submitted and obtain the reference number.
- Ask the plan whether the request is pending, approved, denied, cancelled, or waiting for information.
- Identify the specific missing document or coverage criterion when action is required.
- Coordinate the provider response, peer-to-peer review, corrected coding, or alternative site of care when appropriate.
- Use the appeal, expedited review, or external-review pathway when the plan's decision warrants challenge.
Questions to ask HR or the plan administrator
- Was the request submitted, and what is the reference number?
- What is the exact status and expected decision date?
- Is any clinical note, test result, code, or treatment history missing?
- Which coverage criterion or policy is being applied?
- Can the ordering clinician request a peer-to-peer review?
- Does the situation qualify for expedited review or appeal?
Prior Authorization Next-Step Guide
Common mistakes
- Assuming an order means insurance approval.
- Assuming authorization means the service is free.
- Not checking whether the approved site is in-network.
- Not getting the authorization number.
- Forgetting that approval can be limited by date range, service code, or provider.
Key takeaway
Prior authorization is the payer's approval step, not the clinician's recommendation. Confirm approval, location, date range, and expected cost before scheduled care when possible.
Next useful step
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Benefits and Insurance Tools
Pick the situation first: EOB, bill, open enrollment, spouse coverage, prescriptions, or prior authorization.
Open the relevant calculator
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Open Enrollment Guide
Use this when the question affects next year's benefit elections or payroll deductions.
Sources
- HealthCare.gov· Preauthorization glossary
Official definition of preauthorization and warning that approval is not a payment guarantee.
- HealthCare.gov· Allowed amount glossary
Official definition of allowed amount for covered health care services.
- HealthCare.gov· Network glossary
Official definition of health plan provider networks.