How is this different from calling my insurance company

Calling the member-services number can help you understand a denial. It rarely reverses one. The reason is procedural: a phone call does not start any regulatory clock. A written appeal does.

What a phone call gets you

• A live person can explain what the denial code means
• They can sometimes correct a clerical error on the spot (wrong provider taxonomy, missing modifier)
• They can reissue a claim if the original was rejected for a data problem
• They can tell you the appeals address and window

That is genuinely useful. If the fix is clerical, the phone call is the fastest path. Take notes: date, time, agent first name, reference number.

What a phone call does not get you

• It does not obligate the plan to review the denial under its own procedures
• It does not preserve your right to an external review later
• It does not create a document a state insurance department or an attorney can read
• It does not force the plan to answer inside 30 or 60 days

For ERISA-governed group health plans, the plan has to give you a "full and fair review" of a formal written appeal under 29 CFR 2560.503-1. Calling does not trigger that. Sending a letter does.

Why a written appeal matters procedurally

Once you file a written internal appeal, four things happen that a phone call cannot do:

1. The plan owes you a written decision on a schedule. Post-service claim appeals must be decided within 60 days for group health plans, faster for pre-service and urgent.
2. You unlock external review. For non-grandfathered plans, ACA section 2719 (45 CFR 147.136) gives you an independent external review after you exhaust internal appeals. You cannot get there without a written internal appeal on record.
3. You create a paper trail. If you later hire an ERISA attorney or complain to your state insurance department, the file starts with your letter and their response.
4. You force the plan to identify the specific plan provision it relied on. The regulation requires the denial to name it. In practice, a written appeal often surfaces reasoning the phone rep did not have.

How Basis Appeals fits

Basis Appeals writes the letter. You still control the send. You print it, sign it, and mail it USPS Certified Mail with Return Receipt. Or you upload it to the insurer portal if the insurer accepts uploaded appeals. See How to send by certified mail (step-by-step).

Do both

The best move is usually to do both. Call member services to fix any clerical issue and to confirm the correct appeals address. Then send the written appeal. The phone call closes any easy misunderstanding; the written appeal starts the clock the insurer has to answer on.

Ready to draft? /new.