Denial Facts
Ohio

Oscar Insurance Corporation of Ohio denied your claim. Here is your deadline.

Your two dates, free

Put in the date on your Oscar Insurance Corporation of Ohio notice and get both federal deadlines as calendar dates.

Free, for an Oscar Insurance Corporation of Ohio denial in Ohio, 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 Insurance Corporation of Ohio denied 121,739 of 610,423 in-network claims in Ohio; every one of those denials had these same two dates on it. Across Ohio as a whole the insurers in this file denied 17.9% of in-network claims, 2,934,307 of them, and 35,236 were appealed.

Oscar Insurance Corporation of Ohio denied 19.9% of in-network claims in Ohio, 121,739 claims out of 610,423.

Insurance got denied, what to do next?
We hear this most. r/HealthInsurance, thread title, read September 3, 2026.
The number nobody else publishes. 255 denials by Oscar Insurance Corporation of Ohio in Ohio reached the independent review its own staff do not decide, and 67 of those were overturned, 26.27%. That is this insurer's own filed row in the federal file, not our estimate. We publish no success rate of our own, because we have none.

Those 121,739 denials are 4.1% of every in-network denial recorded in Ohio in this release, which makes Oscar Insurance Corporation of Ohio the 8th largest source of denials of the 10 insurers reporting there. Spread across its 17 plans in the state that is about 7,161 denials per plan. 8,186 internal appeals were filed against those 121,739 denials. Every one of those denials carried the same two dates the tool at the top of this page works out.

The clock your letter has to describe, in actual dates

Two dates matter more than anything else on this page, and they run the same in Ohio 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.

Data verified September 5, 2026 · CMS Transparency in Coverage Public Use File (PY2026 release, PY2024 claims), data.healthcare.gov — US Government public domain

You are not alone, and here is the measured version of that sentence: 121,739 in-network claims were denied by Oscar Insurance Corporation of Ohio in Ohio in a single plan year. A denial rate is a fact about an insurer's book of business. It is not a judgment about you, and it is not the last word on your claim.

What to do tonight
  1. Find the reason code on your denial letter. The reason Oscar Insurance Corporation of Ohio records most often in Ohio is administrative reason, but yours may be one of the other 8, copy the exact wording and code off your own letter tonight, because that sentence is what your appeal has to answer.
  2. Ask Oscar Insurance Corporation of Ohio in Ohio 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.
  3. 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. Oscar Insurance Corporation of Ohio overturned 34.07% of the internal appeals it did receive, 2,789 claims, so the stage you are about to start is not decorative.

None of those three steps costs anything. Anyone charging you to do them is selling you something you can do yourself in twenty minutes.

19.9%
In-network denial rate
121,739
Claims denied
17
Plans in Ohio
8,186
Internal appeals filed
34.07%
Internal overturn rate

How that compares

Denial rateRateDifference
Oscar Insurance Corporation of Ohio19.9%,
Ohio average17.9%+2 pts
National average (this dataset)18.7%+1.2 pts

Oscar Insurance Corporation of Ohio denies 1.2 percentage points more of its in-network claims than the national average across this dataset. A denial rate is a property of the insurer's book of business, coding practice, plan design, the population it covers, not evidence about the merits of any one claim, including yours.

What happened to appeals

StageFiledOverturned
Internal appeal (to Oscar Insurance Corporation of Ohio)8,18634.07%
External review (independent)25526.27%
Read that again: Oscar Insurance Corporation of Ohio denied 121,739 claims in Ohio, and only 255 went to independent external review. External review is free to you and the insurer must follow the decision.

The gap nobody escalated

121,739 claims denied. 8,186 internal appeals filed. 255 reached independent external review. Nationally 32.8% of external reviews are overturned and the decision binds the plan.

That is arithmetic from the reported figures, not a prediction: nobody can say what those specific denials would have done at review, because they never got there. What the numbers do establish is that the binding stage was almost entirely unused here.

What that record means for your own Oscar Insurance Corporation of Ohio letter, and by when. Oscar Insurance Corporation of Ohio overturned 34.07% of the 8,186 internal appeals its Ohio members filed against 121,739 denials, and 255 of those Ohio denials went on to the independent stage whose decision binds the plan, Oscar Insurance Corporation of Ohio's own 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 Insurance Corporation of Ohio 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 Insurance Corporation of Ohio in Ohio. One payment. No subscription. No cut of your claim.

Oscar Insurance Corporation of Ohio inside Ohio

Your denial did not happen in a national average. It happened in a state market, alongside 10 other insurers reporting into the same federal file, and these are that market's own figures.

What Oscar Insurance Corporation of Ohio denies most

The most common denial reason recorded for Oscar Insurance Corporation of Ohio plans in Ohio is administrative reason. How that denial is beaten →

Denial reasonClaimsShareNational share
Administrative reason64,24059.3%22.5%
Benefit limit reached18,49017.1%4.2%
Referral required10,90110.1%8.4%
Provider out of network9,9769.2%9.8%
Other reasons2,3482.2%32.3%
Service excluded from the plan1,1851.1%11.6%
Member not covered8270.8%6.6%
Experimental or investigational4290.4%0.1%

The last column is each reason's share of all categorized denials nationally, so you can see where Oscar Insurance Corporation of Ohio's mix in Ohio differs from everyone else's. This is denial mix, not overturn rate by reason, the federal file does not report appeal outcomes broken down by denial reason, and we do not imply otherwise.

Work out your two deadlines

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. For what it is worth on this page specifically: Oscar Insurance Corporation of Ohio overturned 34.07% of the internal appeals it received.

Questions

Is Oscar Insurance Corporation of Ohio's denial rate in Ohio high?

19.9% against a national average of 18.7% across the plans in this dataset. It is above average. A denial rate describes the insurer, not the merits of your claim.

How many people appealed an Oscar Insurance Corporation of Ohio denial in Ohio, and how many won?

8,186 internal appeals were filed against 121,739 denials, and 34.07% of them were overturned (2,789 claims). 255 went on to independent external review.

How does Oscar Insurance Corporation of Ohio compare with other insurers in Ohio?

Of the 10 insurers in Ohio with a reported denial rate, Oscar Insurance Corporation of Ohio ranks 6 highest at 19.9%. The highest in Ohio is Oscar Buckeye State Insurance Corp. at 26.5%; the lowest is Community Insurance Company(Anthem BCBS) at 8.3%.

What does Oscar Insurance Corporation of Ohio deny most often in Ohio?

Administrative reason, 64,240 claims, 59.3% of this issuer's categorized denials, against 22.5% nationally. This is the denial-reason mix; the federal file does not report overturn rates by reason.

How long do I have to appeal an Oscar Insurance Corporation of Ohio denial in Ohio?

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 Ohio, Oscar Insurance Corporation of Ohio 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 Insurance Corporation of Ohio denial in Ohio cost anything?

The internal appeal to Oscar Insurance Corporation of Ohio 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 Ohio can be charged more than that to file one.

Can Oscar Insurance Corporation of Ohio ignore an external review decision in Ohio?

No, and that is the whole point of the stage. External review decisions are binding on the plan by law, which is what makes the 255 external reviews recorded against 121,739 Oscar Insurance Corporation of Ohio denials in Ohio the striking number on this page.

Oscar Insurance Corporation of Ohio sits at 19.9% in Ohio against 18.7% nationally, and that is the whole of what this page can honestly tell you about your own claim. 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.com
Get my Appeal Kit, $29

Everything you need for your Oscar Insurance Corporation of Ohio appeal in Ohio: 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.

Where these numbers come from

The Oscar Insurance Corporation of Ohio figures on this page, the 19.9% denial rate, the 121,739 denials and the 255 external reviews, are this issuer’s own reported rows in that file.

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).

This page presents federal statistics and a general description of appeal rights created by federal law. It is not legal, medical, or insurance advice, and no outcome is guaranteed. Your denial letter and plan documents govern your specific case. Free help is available from your state's Consumer Assistance Program and from the federal Marketplace at HealthCare.gov.
Problem solved: You have both dates for your Oscar Insurance Corporation of Ohio notice, you know that Ohio runs the external review itself, and you have the letter, free, on this screen, tonight.

Your words, in a box, read by a person. We ask for no name and no email.