Health insurance or Medicaid said no in Mississippi? Deadlines and free help

In Mississippi, your health plan is regulated by Mississippi Insurance Department (MID), Consumer Services Division, if it is a state-regulated plan.

Mississippi runs its own independent review of denials: Health Care External Review. You generally have 4 months to ask for it.

External review means a doctor or reviewer outside your plan decides again. Internal appeal means your plan looks at its own decision again.

Pick your plan type

Which kind of coverage was denied? The plan type decides which rules and deadlines apply.

Insurance I bought or got through work

Your state insurance rules may apply. First appeal to your plan, then ask for an outside review.

My employer pays claims itself (self-funded)

Federal rules apply, and most state insurance laws do not. Free help comes from the U.S. Department of Labor.

Mississippi Medicaid

You ask the state for a fair hearing. In a Medicaid health plan, you usually appeal to the plan first.

Marketplace (HealthCare.gov) decision

A decision about whether you can buy a plan or get financial help is appealed to the Marketplace.

How long do I have?Urgent care: faster decisionWrite my appealFree help

Checked against official sources: October 30, 2026.

Appeal deadlines are strict. If you are near a deadline or your care is urgent, call free help today.

Some of Mississippi's rules rest on limited sources.

Check the official sources below, or ask a legal aid office, before you rely on them.

How long do I have in Mississippi?

Appeal to your plan
At least 180 days from receipt of the denial (federal rule)
Outside review
4 months
Hearing deadline
30 days
Appeal to the plan first
60 days (federal rule)
Appeal deadline – HealthCare.gov
90 days (federal rule)

All the details →

How long do I have? Deadline calculator

How do I know which plan type I have?

How to tell which agency regulates your plan

If your coverage comes through your employer, ask whether it is a self-funded plan. Most self-funded plans are not eligible for Mississippi's external review; some offer external review voluntarily with their own procedures.

Law: MID External Review Request Form (19 Miss. Admin. Code Pt. 3, R. 15.21, Appendix B)

Step 1: Appeal to your plan in Mississippi

What it is called: Internal grievance (internal appeal)

If you file a grievance about a denial and your insurer does not give you a written decision within 30 days (unless you asked for or agreed to a delay), you are treated as having finished the internal appeal and can ask for external review. Any person aggrieved by a final utilization review decision also has the right to go to court.

Law: 19 Miss. Admin. Code Pt. 3, R. 15.06(A)(2); R. 19.10

All the details →

Step 2: Outside review in Mississippi

Health Care External Review

Deadline to ask: 4 months.

All the details →

Urgent care in Mississippi: faster decisions

Outside review

If your treating provider certifies that waiting for a standard review would seriously jeopardize your life or health or your ability to regain maximum function, or the denial concerns care after emergency services while you are still in the facility, you can ask for an expedited review. It must be completed within 72 hours. Call the Insurance Department at 601-359-3569 before sending your paperwork for instructions on the fastest way to submit.

Law: 19 Miss. Admin. Code Pt. 3, Ch. 15 (Mississippi Health Carrier External Review Regulation), R. 15.05-15.10, 15.15

Standard: 45 days; Urgent: 72 hours

Medicaid

If you are uninsured and need a medical procedure or treatment that is scheduled or needs to be scheduled, you can ask your Medicaid regional office for an expedited hearing in person, by mail, by phone or by other electronic means. If it is granted, the decision is due within 7 working days; if not, the standard 90-day timeframe applies.

Law: 23 Miss. Admin. Code Pt. 300, Ch. 2 (as revised eff. 3/1/2023 and 7/1/2025); DOM Eligibility Hearings pamphlet (rev. 02/01/2026)

Complaints about your plan in Mississippi

For other problems with an insurer, you can file a complaint with the Mississippi Insurance Department online or with its complaint form, or call the Consumer Services Division at 601-359-2453. Mailing address: Consumer Services Division, Mississippi Insurance Department, P.O. Box 79, Jackson, MS 39205.

www.mid.ms.gov

Medicaid (Mississippi Medicaid (including MississippiCAN managed care and CHIP)) denials in Mississippi

Who holds the hearing: Division of Medicaid regional office (local hearing) and DOM Bureau of Appeals (state hearing).

Hearing deadline: 30 days

All the details →

Marketplace decisions in Mississippi

Mississippi uses HealthCare.gov. Appeals go to the federal Marketplace Appeals Center.

HealthCare.gov

1-855-231-1751

Other rights in Mississippi

Prior approval deadlines

An insurer must decide a non-urgent prior authorization within 7 calendar days after it has all necessary information, and an urgent one within 48 hours (2 business days for prescription drugs). A prior approval from your previous insurer must be honored for at least the first 90 days of new coverage. If a doctor certifies within 72 hours of a hospital admission that you needed immediate emergency care, that is treated as strong evidence the admission was medically necessary.

Law: 19 Miss. Admin. Code Pt. 3, Ch. 19, R. 19.11, 19.18 (effective January 1, 2025); Miss. Code Ann. 83-5-901 to 83-5-937, 83-9-6.3

How long do I have? Deadline calculator

Pick your plan type and enter the dates on your notice. We count from the rules in Mississippi and the federal rules.

Worked out in your browser. Nothing you enter here is saved or sent.

If you are not sure when it arrived, use the date printed on the notice. That date is never later than the day it arrived.

Choose what was decided and enter the date on your notice

We add the number of days or months from the law to your date. Nothing is saved.

Write my appeal: free letters

Free help in Mississippi

Good to know in Mississippi

  • Mississippi's external review rules are set by Insurance Department regulation, not by statute.

    Law: 19 Miss. Admin. Code Pt. 3, Ch. 15, adopted under Miss. Code Ann. 83-5-1

  • Mississippi Medicaid gives 30 days from the postmark date of the notice to ask for a hearing.

    Law: 23 Miss. Admin. Code Pt. 300, R. 2.8

  • To keep Mississippi Medicaid benefits during an appeal, the hearing request must reach the regional office within 10 days of the notice date.

    Law: 23 Miss. Admin. Code Pt. 300, R. 2.21

Changes in 2024–2026

January 1, 2025: new Insurance Department utilization review and prior authorization rules under Miss. Code Ann. 83-5-901 to 83-5-937: 7-day non-urgent and 48-hour urgent prior authorization deadlines and 90-day continuity of prior approvals. The Division of Medicaid revised its appeals rules effective July 1, 2025 (types of hearings; appeals that must start as a state hearing).

Law: 19 Miss. Admin. Code Pt. 3, Ch. 19

Questions about appeals in Mississippi

How long do I have to appeal a health insurance denial in Mississippi?

State rules do not set a longer time. Use the deadline on your denial notice; federal rules give at least 180 days for most plans. You have at least 180 days (about 6 months) from when you receive the denial notice to file an internal appeal.

How do I get an outside (external) review in Mississippi?

Health Care External Review. Fill out the External Review Request Form, sign it (it includes a release of medical records), and mail it with: a copy of your insurance card, the insurer's letter saying its decision is final (or that it waived the internal process), and a copy of your certificate of coverage or policy booklet. Mail to Office of the Insurance Commissioner, Mississippi Insurance Department, Attn: Life and Health Actuarial Division, P.O. Box 79, Jackson, MS 39205.

Is outside review free in Mississippi?

Your insurer pays the cost of the independent review organization. No filing fee is charged under the state rule.

How long do I have to ask for a Medicaid fair hearing in Mississippi?

30 days. The date the notice was mailed

Can I keep my Medicaid benefits while I appeal in Mississippi?

If you already have Medicaid or CHIP, your benefits continue at the old level if the regional office receives your hearing request within 10 days of the date of the notice. A request received after that is not timely for keeping benefits.

Who regulates health insurance in Mississippi?

Mississippi Insurance Department (MID), Consumer Services Division. If your coverage comes through your employer, ask whether it is a self-funded plan. Most self-funded plans are not eligible for Mississippi's external review; some offer external review voluntarily with their own procedures.

Not about a denied claim?

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