Prior authorization approval does not guarantee that the insurer will pay the final claim. HealthCare.gov explicitly distinguishes preauthorization from a promise to cover the cost. The submitted claim must still satisfy the applicable benefit, eligibility, network, and billing requirements.
That does not make every denial after approval correct. An authorization may be missing from the claim, the claim may contain an error, or the insurer may have applied a rule incorrectly. The useful question is not simply “Was anything approved?” but “Does the final claim match what was approved, and what exact rule caused the denial?”
Gather three documents
- The approval notice: authorization number, patient, approved procedure or drug, dates, units or visits, provider, facility, and any conditions.
- The latest EOB or denial notice: claim number, service date, reason and remark codes, patient responsibility, and appeal instructions.
- The provider’s itemized claim information: billed service, procedure codes where available, location, units, and the authorization reference submitted.
Use secure insurer and provider channels. Keep copies of the documents as originally issued. A verbal statement that “we got approval” is less useful for resolving a mismatch than the written notice.
Compare the approval with the claim
| Check | Question to ask |
|---|---|
| Dates and quantity | Was the service inside the approved date range and number of visits or units? |
| Service identity | Did the billed procedure differ from the authorized procedure? |
| Provider and location | Was approval tied to a specific facility, clinician, or setting? |
| Coverage on service date | Was the member enrolled in the plan that issued the approval? |
| Claim linkage | Did the claim include the correct authorization number? |
| Benefit rule | Is the dispute about authorization, an exclusion, medical necessity, or another requirement? |
These are investigation prompts, not findings about your claim. Ask the insurer to identify the precise plan provision and how it applies. Do not assume an authorization overrides an exclusion or transfers automatically to a new plan.
Example: correcting a mismatched claim
Suppose a plan approves six therapy visits during a stated period. The provider submits one of those visits without the authorization number, and the EOB says authorization was absent. A practical first step is to ask the provider to verify the billed service and submit a corrected claim with the approval reference, then confirm with the insurer that it is linked.
This hypothetical example does not predict payment. If the insurer instead says the approved treatment is not a covered benefit, ask for its written explanation and review the appeal route. A coding correction and an appeal of a coverage decision are different tasks.
Protect the appeal deadline while seeking a fix
Ask whether the insurer wants a corrected claim, an internal appeal, or additional medical records. Follow the denial notice’s deadline and submission method. Do not assume that a provider’s resubmission or a customer-service call pauses your own appeal clock.
An appeal packet can include the approval, EOB, relevant plan language, a short chronology, and a provider statement explaining the service or medical necessity. Request the specific remedy: correct the authorization match, reconsider the denial, or explain the remaining issue.
External review may be available under the rules governing the plan and the type of denial. If waiting could seriously jeopardize health, ask the insurer and treating clinician about expedited review rather than using an ordinary billing timeline.
Before the next service
- Confirm approval details in writing and ask what remains subject to benefit review.
- Verify both the provider and facility network status for your exact plan.
- Ask the provider to notify you if the procedure, location, or treatment quantity changes.
- Remember that an approved service can still have deductible, copay, or coinsurance obligations.
Use our appeal guide for the broader process, or the bill-versus-EOB checklist if the provider’s balance is the immediate problem.
Official sources to verify details
Confirm with your issued policy and the relevant government or regulatory body; rules vary by jurisdiction and plan.
Source pages checked November 14, 2026. Examples are hypothetical; no professional review is claimed.
- HealthCare.gov: Preauthorization — Explains that preauthorization is not a promise that the plan will cover the cost.
- HealthCare.gov: How to appeal an insurance company decision — Explains internal appeals, urgent review and independent external review; procedures depend on the applicable plan rules.
- HealthCare.gov: Getting regular medical care — Recommends checking the plan directory, calling the insurer and calling the doctor’s office.
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Editorial note: Policy Made Clear provides general education, not personalized insurance, legal, tax, medical, or financial advice. We are not an insurer or agency. The issued contract and applicable law control your coverage.