Oscar denied your claim in Mississippi. Here is your deadline.
Put in the date on your Oscar Health Plan, Inc. notice and get both federal deadlines as calendar dates.
Free, for an Oscar Health Plan, Inc. denial in Mississippi, and it runs entirely in your browser. The date, the plan type and the state you pick are never sent to us and never stored.
Oscar Health Plan, Inc. reported no usable denial count for Mississippi, so these dates are the part of this page that is certain. Across Mississippi as a whole the insurers in this file denied 18.3% of in-network claims, 2,725,739 of them, and 1,687 were appealed.
Oscar Health Plan, Inc. operates 7 plans in Mississippi.
Insurance got denied, what to do next?
Two dates matter more than anything else on this page, and they run the same in Mississippi as everywhere else. You have 180 days from the date on your denial notice to file the internal appeal, and then 4 months from the final internal denial to ask for an independent external review. If waiting would seriously jeopardize your health you can ask for both to be expedited, decided in about 72 hours. Both timeframes are federal, not your insurer's choice, 29 CFR 2560.503-1 (PDF) and 45 CFR 147.136 (PDF), in plain English at HealthCare.gov, and your own denial letter states the ones that govern your plan. The PDFs are the same sections on govinfo.gov, which serves them without a challenge page, so an automated reader can check these two dates as easily as you can.
You are not alone, and here is the measured version of that sentence, for Mississippi rather than for Oscar Health Plan, Inc., because the file left this company's rows empty: insurers in Mississippi denied 2,725,739 in-network claims in a single plan year, 18.3% of everything submitted, across 5 reporting insurers. How many of those came from Oscar Health Plan, Inc. is not on the record; that it happened to a great many people in Mississippi is.
- In Mississippi, Oscar Health Plan, Inc.'s rate was not reported at all, and the same company files in 9 other states in this file, where the rate is not the same in any of them: 28.1% in Arizona, 27.3% in Michigan, 26.1% in Kansas, down to 21.7% in Nebraska. Which state the plan was bought in moves the odds more than the brand on the card does.
- Find the reason code on your denial letter. The federal file records no denial-reason breakdown for Oscar Health Plan, Inc. in Mississippi, so this page cannot tell you which of the 9 categories yours will be, your letter can, and it has to. Copy the exact wording and the code off it tonight: that sentence is what your appeal has to answer.
- Ask Oscar Health Plan, Inc. in Mississippi for the clinical criteria they judged you against. Under 29 CFR 2560.503-1 they have to hand you the claim file and the policy they applied, free, on request, and you cannot argue with a checklist you have never read.
- Put both deadlines on your calendar before you go to bed. 180 days from the date on the letter for the internal appeal, 4 months from the final internal denial for external review. The free calculator on this page turns your date into the two calendar dates in about ten seconds. Nationally only 1 in 14,369 denials ever reaches the second stage, and none of the Oscar Health Plan, Inc. denials in Mississippi are in that count either way, the file records no figure for them. The date on your letter is the part that is certain.
None of those three steps costs anything. Anyone charging you to do them is selling you something you can do yourself in twenty minutes.
What happened to appeals
| Stage | Filed | Overturned |
|---|---|---|
| Internal appeal (to Oscar Health Plan, Inc.) | not reported | not reported |
| External review (independent) | not reported | not reported |
What that record means for your own Oscar Health Plan, Inc. letter, and by when. Oscar Health Plan, Inc. recorded no separately reported denials in Mississippi and no separately reported appeal outcome, so this page cannot tell you how its Mississippi appeals went, the Oscar Health Plan, Inc. rows in the plan-year 2026 release of the CMS Transparency in Coverage file, read September 5, 2026 (data.healthcare.gov). Whichever way that lands, nobody files the appeal for you, and the filing runs on a clock set by which plan you hold: an employer or Marketplace plan gives you at least 180 days from the denial notice to file the internal appeal (29 CFR 2560.503-1(h)(3)(i), carried onto individual-market coverage by 45 CFR 147.136(b)(3)(i)), while Medicare Advantage gives you 60 calendar days after you receive its notice (42 CFR 422.582(b)) and Medicaid managed care the same 60 calendar days from the date on the notice (42 CFR 438.402(c)(2)(ii)), both stages free, and the three steps above are the whole of what to do tonight, so take the date printed on your Oscar Health Plan, Inc. notice and file well inside whichever of those windows is yours. The free steps are above; the $29 kit is the same clock with the letters pre-filled for Oscar Health Plan, Inc. in Mississippi. One payment. No subscription. No cut of your claim.
Oscar Health Plan, Inc. inside Mississippi
Your denial did not happen in a national average. It happened in a state market, alongside 4 other insurers reporting into the same federal file, and these are that market's own figures.
- Across the whole of Mississippi, the 5 insurers reporting in this file processed 14,872,712 in-network claims and denied 2,725,739 of them, a state denial rate of 18.3%. Oscar Health Plan, Inc. is one of those 5.
- That puts Mississippi 15th of 30 states by denial rate, 0.4 points below the 18.7% national average, before you get to what Oscar Health Plan, Inc. did inside it.
- Mississippi recorded 1,687 internal appeals against those denials: one appeal for every 1,616 claims the state's insurers refused.
- Not one denial in Mississippi reached independent external review in the reported year, not Oscar Health Plan, Inc.'s and not any other insurer's in the state. That is the stage whose decision the plan is required by law to accept.
- The reason Mississippi's insurers record most often is other reasons, 627,243 claims, 28.7% of the state's categorized denials.
- Every Mississippi figure in this section is that state's own row in the same federal file Oscar Health Plan, Inc.'s numbers above come from, CMS Transparency in Coverage Public Use File (PY2026 release, PY2024 claims), data.healthcare.gov — US Government public domain, and the full Mississippi page is free at /states/mississippi.
What the file does record for Mississippi
The federal file carries no usable figures for Oscar Health Plan, Inc. in Mississippi, so nothing on this page can tell you how often this company denies or how many of its denials were appealed. What it can tell you is the market that denial happened in: Mississippi's own row, and the 4 other insurers reporting alongside Oscar Health Plan, Inc. there. Every number below is Mississippi's, not Oscar Health Plan, Inc.'s, and it is labelled that way because an absent figure must never be filled in from a neighbor.
- 4 insurers in Mississippi reported a denial rate where Oscar Health Plan, Inc. reported none, from Cigna Health and Life Insurance Company at 27.7% down to Ambetter of Magnolia Inc. at 16%. The whole Mississippi table is published free.
- The largest single source of denials in Mississippi in this release was Ambetter of Magnolia Inc., with 1,824,195, its record is here. Oscar Health Plan, Inc.'s own share of that total is unknown, because its rows are the ones the file left empty.
- Across the whole of Mississippi the 5 insurers reporting in this file processed 14,872,712 in-network claims and denied 2,725,739 of them, 18.3%. None of that total is attributable to Oscar Health Plan, Inc.: an absent row is not a zero row, and we will not add one to make the arithmetic tidy.
- The reason Mississippi's insurers recorded most often is other reasons, 627,243 claims, 28.7% of the state's categorized denials against 32.3% nationally. Whether it is the reason Oscar Health Plan, Inc. recorded most often is not on the record; your own letter names yours.
- Behind it in Mississippi: administrative reason at 454,259 claims, then provider out of network at 236,210. Each of those pages says plainly whether external review reaches that category at all, which is the question a Oscar Health Plan, Inc. letter is going to raise next.
- Mississippi's insurers denied 2,725,739 in-network claims in this release, 18.3% of everything submitted, against 18.7% nationally.
- 1,687 internal appeals were filed in Mississippi against those denials, one for every 1,616 claims refused.
- Not one Mississippi denial in this release reached independent external review, an explicit zero in the state's own row, against one in 14,369 nationally.
- Your deadlines do not depend on any of it: 180 days from the date on your Oscar Health Plan, Inc. notice for the internal appeal, then four months from the final internal denial for external review, the same in Mississippi as in every other state.
- What does depend on Mississippi is who decides your case at the end, Mississippi runs its own external review process meeting the federal standards, so an insured plan there goes through the state program.
Put the date from your notice in and get the two calendar dates, with the days remaining.
Runs entirely in your browser, the date you type is never sent to us and never stored. Open the full calculator →
The three steps at the top of this page are the whole of what you have to do tonight. The longer version, what the internal appeal has to contain, how the independent stage works, and how to ask for expedited handling when waiting would seriously jeopardize your health, is published free here.
Questions
Is Oscar Health Plan, Inc.'s denial rate in Mississippi high?
Not separately reported for Oscar Health Plan, Inc. in Mississippi in this release, so this page prints no rate for it. The Mississippi market as a whole denied 18.3% of in-network claims, 2,725,739 of them, against 18.7% nationally, that is the state, not this insurer. A denial rate describes the insurer, not the merits of your claim.
How many people appealed an Oscar Health Plan, Inc. denial in Mississippi, and how many won?
Appeal volumes were not separately reported for Oscar Health Plan, Inc. in Mississippi. Across Mississippi as a whole 1,687 internal appeals were filed against 2,725,739 denials, one for every 1,616 refused, and that is the state figure, not this company's. Nationally, 32.6% of internal appeals and 32.8% of external reviews are overturned.
How does Oscar Health Plan, Inc. compare with other insurers in Mississippi?
Oscar Health Plan, Inc.'s denial rate was not separately reported, so it cannot be ranked against the other insurers in Mississippi. The full Mississippi table is published free at /states/mississippi.
What does Oscar Health Plan, Inc. deny most often in Mississippi?
No denial-reason breakdown was reported for Oscar Health Plan, Inc. in Mississippi. The reason Mississippi's insurers recorded most often is other reasons, 627,243 claims, and that is the state's mix, not this company's.
How long do I have to appeal an Oscar Health Plan, Inc. denial in Mississippi?
Generally 180 days from the date on the denial notice to file the internal appeal, then generally four months from the final internal denial to request independent external review. Expedited review, decided in about 72 hours, is available where delay would seriously jeopardize your health. Those timeframes are federal, so they are identical for every insurer reporting in Mississippi, Oscar Health Plan, Inc. included, what varies by state is who runs the independent review at the end. Your own denial letter states the deadlines that govern your plan; that letter is the authority.
Does appealing an Oscar Health Plan, Inc. denial in Mississippi cost anything?
The internal appeal to Oscar Health Plan, Inc. is free. External review is free under the HHS-administered federal process; where an issuer uses a contracted independent review organization or a state process, any fee is capped at $25 per review. Nobody in Mississippi can be charged more than that to file one.
Can Oscar Health Plan, Inc. ignore an external review decision in Mississippi?
No, and that is the whole point of the stage. External review decisions are binding on the plan by law. The count is the one this page names as absent for Oscar Health Plan, Inc. in Mississippi, so none is printed for it, an absent figure is not a count of none.
The federal file reports no separate figures for Oscar Health Plan, Inc. in Mississippi, so this page gives you the rights and the dates instead of a number it does not have. I am not going to tell you that you will win. This page prints the insurer's own reported numbers whichever way they fall. If what it says does not match the letter in your hand, write to me and I will correct the page.
, Andrew at Axion Labs · hello@getaxionlabs.comEverything you need for your Oscar Health Plan, Inc. appeal in Mississippi: your two deadlines, the argument that fits your denial reason, the letters, the clinician brief, and the external review request. One payment. No subscription. No cut of your claim. Opens on screen the moment you pay. 14-day refund, no questions, one email to hello@getaxionlabs.com.
The Oscar Health Plan, Inc. figures on this page, the not reported denials, are this issuer’s own reported rows in that file. CMS did not report an external-review figure for Oscar Health Plan, Inc. in Mississippi in the plan-year 2026 release of the Transparency in Coverage file, which is why no external-review count appears above.
Counts: CMS Transparency in Coverage Public Use File (PY2026 release, PY2024 claims), data.healthcare.gov — US Government public domain. Rights and timeframes: 29 CFR 2560.503-1 (180 days, and your free right to the claim file) and 45 CFR 147.136 (4 months, and what qualifies), explained at HealthCare.gov. Expedited review is decided in about 72 hours under both sections.
Reading either regulation from a script rather than a browser: eCFR answers automated fetches with a challenge page, so the same two sections are mirrored as government PDFs at govinfo.gov (29 CFR 2560.503-1) and govinfo.gov (45 CFR 147.136).