Insurance appeals

Appeal an Out-of-Network Denial (Letter Template)

4 min · reviewed June 14, 2026

Template, not legal advice. Fill in the [bracketed] fields, confirm the current deadline and dollar threshold for your state and health plan, and keep a dated copy of everything you send. For complex or high-dollar disputes, consider a nonprofit patient advocate or an attorney.

Sometimes a claim is denied or underpaid simply because the provider was out of network — even when you had little choice. You can appeal and ask the plan to cover the care at the in-network level. Strong grounds include: no in-network provider was reasonably available, an emergency, a provider who went out-of-network mid-treatment, or care at an in-network facility delivered by an out-of-network clinician.

Pick your strongest ground

The letter

[Your full name]
[Your address]
[City, State ZIP]
[Phone] | [Email]

[Date]

[Insurance company - Appeals Department]
[Address from your denial letter]

Re: Appeal of out-of-network denial - request for in-network coverage
Member: [Name]   Member ID: [number]
Claim number: [number]   Date(s) of service: [dates]
Provider: [name]   Facility: [name]

To the Appeals Department:

This claim was processed at out-of-network benefits (or denied). I am appealing
and requesting that it be covered at the in-network level, on the following basis:

[ Choose the ground that applies and explain: ]
  - No in-network provider was reasonably available for [specialty/service]
    within a reasonable distance/time, so I had to use this provider.
  - This was emergency care and should be covered at in-network cost-sharing.
  - I was receiving ongoing treatment from this provider, who left the network
    on [date]; I am requesting continuity of care through [date/end of course].
  - The facility was in-network, but the treating clinician was out-of-network
    and not chosen by me.

Please reprocess this claim at in-network benefits and adjust my cost-sharing
accordingly. If you uphold the denial, please cite the plan provision relied on
and explain how to request an external review.

Sincerely,
[Your signature]
[Your printed name]

How to send it

Appeal within the plan deadline and send on the record. For the “in-network facility / out-of-network clinician” and emergency situations, also check whether the No Surprises Act already caps what you owe — you may not need to negotiate at all.


Notes. Network-adequacy and continuity-of-care rules vary by plan and state, and some plans have specific forms for these requests — call member services and ask which applies. If the appeal is upheld, escalate to an external review. General information, not legal or medical advice.

← All letters