How long until the insurer decides?

Under the ACA: 72 hours for urgent / pre-service claims, 30 days for non-urgent pre-service claims, 60 days for post-service claims. ERISA timelines are similar. If the insurer misses the deadline, you can deem the appeal denied and proceed to external review. Document the timeline carefully — exhausted-internal-appeal-by-deadline is a basis for accelerated external review.

What is external review?

An independent third-party review at the insurer's expense, available after exhaustion of the internal appeals process. Required by the ACA for non-grandfathered plans. The independent review organisation's decision is binding on the insurer (not on you — you can still sue if dissatisfied). State-DOI-administered external review covers state-regulated plans; federal-HHS external review covers self-funded plans without a state process. Statistics show external reviewers reverse insurer denials 40-50% of the time.

Should I get my doctor to write a letter of support?

Yes — strongly recommended. A peer-to-peer letter from the ordering provider citing clinical guidelines and patient-specific factors is often the single most important piece of evidence. Some insurers will schedule a "peer-to-peer" phone call between the ordering provider and the insurer's medical director; this often resolves denials without further written appeal.

What if I need urgent treatment and cannot wait for the appeal?

Use the expedited appeal process — the ACA requires insurers to decide urgent/pre-service appeals within 72 hours. Mark the appeal "URGENT" with the medical reason, and have the provider explicitly state that delay would jeopardise the patient's life or ability to regain maximum function. External review can also be expedited.

Can I sue the insurer if appeals fail?

For ACA non-grandfathered plans: after external review is exhausted, yes — you can sue under ERISA (for employer plans) or state insurance law. Damages are typically limited to the cost of the denied service and attorney's fees; punitive damages are difficult under ERISA. For grandfathered plans or some self-funded ERISA plans, your remedy may be more limited. Consult a healthcare or ERISA attorney; many take cases on contingency.

Insurance Claim Appeal Letter

Formal appeal to a health-insurance denial — internal first level, with citations to plan and law.

Customise

Your name

Your address

Your phone

Member / policy ID

Group number

Insurer name

Insurer appeals address

Claim / reference number

Denial / EOB date

Date of service

Service / procedure denied

Ordering provider

Reason given for denial (from EOB)

Appeal category

Argument and supporting facts

Requested remedy

If internal appeal is denied, do you intend to escalate?

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Jordan Alex Taylor
482 Elm Street, Apt 3B, Portland, OR 97214
Phone: +1 503 555 0118

Date: May 5, 2026

BlueCross BlueShield Oregon
BCBSOR Appeals Department, P.O. Box 30001, Lewiston, ID 83501

Re:  FORMAL APPEAL — Internal First-Level Review
     Member ID:     88312-Q
     Group #:       GRP-OR-44218
     Claim #:       CLM-2026-0044128
     Denial date:   April 22, 2026
     Service date:  March 8, 2026
     Service:       MRI right knee — CPT 73721
     Ordering MD:   Dr. Lin Chen, MD — OHSU Internal Medicine

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To the Appeals Department,

I am formally appealing the denial of the claim referenced above.

REASON GIVEN FOR DENIAL (from EOB)

Denial code 197 — "Precertification / authorization absent." EOB states authorization was not on file at the time of the claim.

APPEAL CATEGORY

   ► Authorization was obtained or not required

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ARGUMENT AND SUPPORTING FACTS

On 2026-03-04, my ordering provider Dr. Lin Chen submitted a prior-authorization request for CPT 73721 (MRI right knee) via the BCBSOR provider portal. The authorization was approved on 2026-03-06 (authorization number AUTH-2026-118432, attached). The MRI was performed on 2026-03-08, two days after the approved authorization, well within the 30-day validity window stated on the authorization.
The denial citing "Precertification absent" appears to be a processing error — the authorization is on file, was issued by BCBSOR, and was active at the time of service. I respectfully request the claim be reprocessed with the authorization applied and an updated EOB issued.
The service was also medically necessary: persistent right-knee pain with mechanical symptoms (locking, give-way), unresponsive to 8 weeks of physical therapy, with concern for meniscal injury. ACR Appropriateness Criteria support MRI for this indication after failed conservative management.

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REQUESTED REMEDY

Reverse the denial and reprocess the claim with authorization AUTH-2026-118432 applied. Issue an updated EOB and pay the provider per plan benefits. Refund any patient-responsibility amount I have already paid that exceeds my correct cost-sharing under the plan.

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LEGAL FRAMEWORK

This appeal is submitted under:

  • The plan's internal appeal procedures (Summary of Benefits and Coverage, Appeals section).
  • The Affordable Care Act (ACA) and its implementing regulations, 45 CFR §147.136, requiring (a) acknowledgement of the appeal within 72 hours, (b) decision on the internal appeal within 30 days for pre-service claims or 60 days for post-service claims, and (c) availability of external review if the internal appeal is denied.
  • For ERISA-governed plans, 29 CFR §2560.503-1, with substantively similar timelines and procedural protections.
  • State-law overlays as applicable.

If this internal appeal is denied, I intend to: Yes — request external review through state DOI.

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ATTACHMENTS

  • EOB / denial letter dated April 22, 2026
  • Authorization documentation (where applicable)
  • Ordering provider's clinical notes supporting medical necessity
  • Plan's relevant policy or coverage criteria (where cited)

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This letter is being sent by certified mail with return receipt. Please confirm receipt and provide the case number for this appeal in writing within 7 days. Direct all correspondence to the address and phone above.

Thank you for your prompt attention.

Sincerely,


_______________________________            Date: ____________________
Jordan Alex Taylor

About this template

Health-insurance denials are appealable, and a properly-written appeal succeeds far more often than most patients expect — published rates from the Government Accountability Office and Kaiser Family Foundation analyses suggest 40-60% of appealed denials are reversed, with even higher rates for clearly procedural denials (missing authorization, coding errors). The Affordable Care Act guarantees specific procedural rights for non-grandfathered plans: acknowledgement within 72 hours, internal appeal decision within 30 days for pre-service claims and 60 days for post-service claims, and access to external review (an independent third-party review at the insurer's expense) if the internal appeal is denied. ERISA-governed plans (most employer-sponsored) follow substantively similar timelines under 29 CFR §2560.503-1. The most successful appeals do four things: (1) state the dispute category clearly (procedural error, medical necessity, coverage interpretation), (2) cite the specific facts and evidence supporting the appeal, (3) cite the controlling clinical guidelines or plan documents (ACR Appropriateness Criteria for imaging, NCCN guidelines for oncology, plan benefit booklet for coverage), and (4) request a specific remedy. Generic "I think this should be covered" letters succeed less often than letters with citation and specificity. External review by an independent organisation overturns roughly 40-50% of insurer denials in published state-DOI data. Filing complaints with the state Department of Insurance often accelerates processing even before formal external review. For complex denials, patient-advocacy organisations and health-law clinics provide free assistance.

When to use it

Claim denied for "lack of medical necessity."
Claim denied for missing prior authorization that was actually obtained.
Claim denied as "experimental" or "investigational" for a treatment with strong evidence.
Claim denied as "not a covered benefit" but the plan booklet shows otherwise.
Out-of-network charge under the No Surprises Act.
Coding-error-related denial.

What to include

Member ID, group number, and claim number.
Specific reason given for denial (from EOB).
Detailed argument with citations.
Clinical notes from ordering provider supporting necessity.
Specific requested remedy.
Citation to ACA / ERISA appeals framework.

Frequently asked

Most non-grandfathered plans require the internal appeal to be filed within 180 days of the denial date. ERISA plans typically have 180 days as well. Don't wait — the deadline is firm and missed deadlines are difficult to revive. File the first-level appeal in writing as soon as you have the EOB and supporting documents.

⚠ Legal disclaimer. Health-insurance appeals law is complex and varies between ACA-regulated plans, ERISA-governed employer plans, and grandfathered plans. Internal-appeal deadlines (typically 180 days from denial) are firm. For complex denials — especially "experimental/investigational" denials for serious illness — work with a patient advocate, healthcare attorney, or non-profit patient-advocacy organisation (Patient Advocate Foundation, etc.). State Department of Insurance offices handle complaints and external review for state-regulated plans.