Oscar Health Timely Filing Limit: The Complete 2026 Guide for Providers

Oscar Health Timely Filing Limit: The Quick Answer

There is no single Oscar timely filing limit that covers every claim. The actual deadline comes from two documents working together: your Participation Agreement and the State Specific Supplement for the state where you treated the patient. Oscar's own Provider Manual sends providers to those state supplements for the number itself, rather than naming one company-wide figure.

Most Oscar state supplements land on 180 days from the date of service. A few states run shorter. Georgia allows 120 days. Texas cuts out-of-network claims to 95 days. The full state breakdown is below.

MedSole RCM built this guide by tracing the Oscar timely filing limit state by state, straight from Oscar's Provider Manual and its published supplements. Every figure carries a citation to where it came from.

Why Oscar Does Not Publish One Universal Number

The Provider Manual Points to State Supplements, Not a Fixed Number

Oscar's Provider Manual handles timely filing the way it handles most claims rules. It states the principle, then sends you to a separate, state-specific document for the actual figure. The manual is direct about this: claim forms have to reach Oscar within the timely filing deadline, and Oscar documents that deadline in the State Specific Supplements instead of the manual itself.

Your state's supplement sets the deadline. Your contract takes priority over the supplement if the two disagree. That hierarchy explains something billers run into constantly: two different guides can each state a confident, different number, and both can be accurate. One guide may be reading Florida's supplement. Another may be reading Georgia's, or reading the appeal window instead of the initial filing window. The number was never wrong. The context around it went missing.

Oscar Runs Through State-Licensed Insurance Entities, Not One National Policy

Oscar Health is the brand name over a set of separately licensed insurance companies. Oscar Insurance Company of Florida, Oscar Health Plan of Georgia, and Oscar Health Plan of North Carolina all operate under that name, and each one answers to its own state's insurance regulator.

That structure decides why the deadline shifts by state. A Florida claim runs on Florida-regulated paper. A Georgia claim runs on Georgia-regulated paper. The entity behind your patient's plan sets the clock you are working against, not a marketing decision at Oscar's headquarters.

Oscar Health Timely Filing Limit by State

The table below reflects what this guide could confirm directly against Oscar's own state supplements.

Texas needs one more sentence, because it explains a contradiction you may have already seen elsewhere. The 95-day figure applies to out-of-network claims, confirmed independently against Texas Department of Insurance claims-filing regulation. In-network Texas claims run on the rate written into your own Participation Agreement, commonly reported at 180 days, and your contract controls that number for your practice.

If your state is not in this table, go to Oscar's State Specific Supplements directly and check it against your own Participation Agreement. The agreement wins if the two ever disagree.

Oscar Timely Filing Limit for Corrected Claims

A corrected claim does not reset the clock. Oscar requires it inside the same window as the original claim, counted from the original date of service, not from the day you caught the error.

Resubmitting a corrected claim means sending a full replacement, not a patch. Providers submitting a paper CMS-1500 need Frequency Code 7 in Item 22 to mark it as a correction. Skip that code and Oscar's system reads the claim as a duplicate and bounces it, which starts the whole appeal conversation over again for no reason.

Picture a claim with the wrong diagnosis code, caught on day 85 of a 90-day window. You have five days left to fix it and refile, not a fresh 90. That gap disappears fast once a coder is juggling 12 other open charts.

If your team tracks corrected claims on the same list as brand-new submissions, that is usually where a deadline slips first.

Secondary Claims and Coordination of Benefits

Bill the primary plan first. Wait for its decision. Then submit to Oscar with a copy of the primary plan's Explanation of Payment attached.

Oscar treats a claim as incomplete if the coordination of benefits information is missing, and Oscar will not pay an incomplete claim. A slow primary payer can quietly eat into the days you have left to file with Oscar as secondary. Start counting from the date of service, not from the date the primary payer finally responds. The clock does not wait for the other insurer to move.

How to Submit a Claim to Oscar Health

Oscar's payer ID is the letters OSCAR, not a number. Clearinghouses like Change Healthcare use claims CPIDs 9638 and 7468 when routing to Oscar. Confirm your own clearinghouse has this loaded correctly before your first submission. A misrouted claim is not the same problem as a late claim, but it produces the identical denial on your end.

For electronic claims, Oscar routes through Change Healthcare. For paper claims, use a CMS-1500 for professional services and a UB-04 for facility services, mailed to Oscar Health, Inc., P.O. Box 52146, Phoenix, AZ 85072-2146.

Save your proof the same day you submit, not the day something goes wrong. Two documents matter here: the 999 functional acknowledgment, which confirms your clearinghouse received the file in a readable format, and the 277CA claim acknowledgment, which confirms Oscar accepted the claim for processing. Either one is what wins a timely filing appeal later. A clean confirmation number from your billing software is not the same thing and will not carry the same weight in a dispute.

That distinction matters because a rejected claim was never filed at all. Oscar's system, or your clearinghouse, can reject a claim before it ever reaches adjudication, usually over a formatting error or a missing required field. A rejected claim has to be corrected and accepted before the original deadline passes, the same as if you had never submitted it. Confirm the current mailing address on Oscar's provider resources page before you send anything by mail, since a payer can move a P.O. box faster than a printed manual gets updated.

What Changed for Oscar Health Prior Authorization in 2026

Starting June 15, 2026, Oscar Health moved electronic prior authorization submission and management to Availity Essentials. Providers submit and track inpatient and outpatient authorization requests through the same Availity workflow already used for other participating health plans, instead of faxing, mailing, or calling Oscar directly.

Availity's own rollout materials describe real-time feedback on submitted requests, often within minutes, along with an Authorization and Referral Inquiry tool for checking status without a phone call and a dashboard that shows every submitted request in one place. For a practice juggling authorizations across a dozen payers, that consolidation is the actual benefit, not the platform switch itself.

The change is worth building into your workflow now if you have not already. Submit a request through Availity and it lands in one dashboard instead of scattered fax confirmations and phone notes, and that dashboard is the record you want on hand if a request stalls past Oscar's normal response time.

One caveat providers keep missing: this shift covers authorization submission and status tracking. It does not change your claim timely filing deadline, which still runs on the state supplement figures covered earlier in this guide. A team that assumes the Availity move also reset their claims clock is setting up a denial that has nothing to do with authorizations at all. If a request stalls in the handoff between systems, tracking prior authorization status is worth having someone own, not guessing which platform to check first.

Oscar Health Appeal and Payment Dispute Deadlines

Provider Payment Disputes: 180 Days, or 365 in California, Florida, and Texas

A provider payment dispute has to reach Oscar within 180 days of receiving the Explanation of Payment for the claim in question. California, Florida, and Texas get 365 days instead, unless your own agreement sets a different timeline.

This is a separate clock from the claim filing window covered earlier, and a separate clock from the appeal deadline in the next section. Billers mix these three up constantly, and that confusion is a real reason appeals get filed too late to count. Disputes go through Oscar's Dispute Resolution Form, submitted by mail, through the provider portal, or by fax at 1-888-977-2062. The dispute resolution process does not start until that form is complete, so a well-documented dispute with no form attached still gets sent back to you.

Appeals of Denied Claims: 180 Days From the Denial

An appeal of a denied medical necessity decision has to reach Oscar within 180 days of the denial notice, or sooner if your state or your agreement requires it.

This is the section where a provider dealing with a fresh timely filing denial lands, so the denial code is worth explaining plainly. CO is the group code, drawn from the official CARC code list, and it means contractual obligation: the write-off belongs to your practice, and you cannot bill the patient for it. The 29 is the specific reason code, and it means the filing window had already closed when your claim arrived.

There is one real path back from a CO-29. You need documented proof of timely submission: a clearinghouse acceptance report or an electronic acknowledgment showing the claim went out before the deadline, not after. Without that proof, the appeal has nothing to stand on. This is exactly the kind of check denial management should run before a CO-29 write-off becomes final.

What Happens After a Timely Filing Denial

Miss the deadline, and Oscar denies the claim automatically. Oscar does not review whether the service was medically necessary or correctly coded once the window has closed. The date alone decides it.

You cannot bill the patient for that denial. It is a contractual write-off under nearly every Oscar agreement. Your one real option is an appeal, and it only works with the proof of timely submission described above.

Oscar has, in rare cases, granted extensions during officially announced events, the kind of industry-wide clearinghouse outage that forces every payer to bend at once. That is not the same thing as a routine administrative delay. A slow portal registration or a staff member out sick does not excuse a late filing, and providers who try to use those excuses in an appeal rarely get anywhere with them.

How Grace Periods Affect the Timely Filing Clock

Grace periods and timely filing are two different clocks, and mixing them up wastes staff time on the wrong fix. Members without a premium subsidy get a 31-day grace period, not 30. Members receiving Advance Premium Tax Credits get three months: Oscar pays claims normally in month one, then holds or denies them in months two and three until the member's balance is paid.

A claim held during a grace period can look identical to a timely filing problem on a first pass through your denial report. Treat it like one, and your team chases a deadline that was never the real cause.

How Oscar Compares to Other Major Payers' Timely Filing Limits

Medicare is the one fixed standard in the industry: 12 months from the date of service under federal regulation, with almost no exceptions. Every other payer, Oscar included, runs on a range set by contract, state, and plan type.

Oscar's approach fits that industry pattern more than it breaks from it, which is worth knowing if you manage claims across more than one of these payers and expected Oscar to be the exception.

How to Never Miss an Oscar Health Filing Deadline

A short list of habits closes most of the gap between knowing these rules and meeting them every time.

1. Submit within 30 to 45 days of the date of service instead of waiting for the deadline to approach. A clean claim filed early leaves room for a rejection to get caught and refiled without any risk to the window.
2. Set an internal alert at the 60-day mark on every open claim, before it becomes urgent. Tracking claims by filing deadline gives 30 days of runway to chase a stuck primary payer or fix a coding error without panic.
3. Register for Availity Essentials now and use it, rather than letting a login sit unused until a request stalls. An unused login will not help you on the day an authorization is due.
4. Save every clearinghouse acceptance report as routine practice, not only after a denial forces you to go looking for one. Six months from now, you will not remember which claim needed the proof.
5. Track corrected claims on their own list, separate from new submissions, so they do not quietly age past the original window. A shared queue treats a five-day-old correction the same as a fresh claim, and that is exactly how corrections get missed.

Most practices can run three or four of these consistently. The one that slips is usually the one no one owns. A closer look at how to follow up on unpaid claims is a good place to start fixing that.

How MedSole RCM Protects Oscar Health Claims From Timely Filing Denials

A practice can know every rule in this guide and still miss a deadline. The failure is rarely a knowledge gap. It is a bandwidth gap, and it shows up on the busiest week of the month, not the calmest one.

MedSole's denial management team tracks Oscar claims by aging bucket and filing deadline proximity, flags corrected claims to work inside the original window instead of treating them as fresh submissions, and categorizes denials by reason code the moment they post. MedSole runs a proof-of-filing check on every CO-29 immediately, while the clearinghouse record is still easy to pull, and builds the appeal the same week instead of after a second look weeks later finds it sitting in a queue.

Full-service revenue cycle management with MedSole starts at 2.99% of collections, with denial management and claim submission review included in that rate rather than billed as separate line items. Provider credentialing runs at $99 per insurance enrollment. If you're weighing what to look for in a credentialing partner or comparing medical billing costs across providers, both are worth a direct look before you decide.

If Oscar denials are eating time your billing team does not have, a free review of your current claims and denial pattern is the fastest way to see exactly where it is leaking.

Frequently Asked Questions

What is Oscar Health's timely filing limit?

Oscar does not publish one number for every claim. The deadline is set by the state supplement and the provider's contract together, most commonly landing around 180 days from the date of service, with confirmed shorter windows of 120 days in Georgia and 95 days for out-of-network claims in Texas.

What is the timely filing limit for corrected claims with Oscar?

The same window as the original claim, counted from the original date of service. A correction does not start a new clock, and it must be submitted as a full replacement claim with the correct resubmission code.

What is Oscar's appeal timely filing limit?

180 days from receipt of the denial for medical necessity appeals. Provider payment disputes run on a separate 180-day window, extended to 365 days in California, Florida, and Texas.

What is the grace period for Oscar insurance?

31 days for members without a premium subsidy. Three months for members receiving Advance Premium Tax Credits, with claims paid normally in month one and held in months two and three.

Is Oscar Health on Availity?

Yes. Since June 15, 2026, Oscar Health prior authorization submission and status tracking run through Availity Essentials, replacing fax, mail, and phone as the primary channel.

Can a provider bill a patient for a timely filing denial?

No. A CO-29 denial is a contractual write-off under the provider's own agreement with Oscar, and billing the patient for it violates that agreement in nearly every case.

What is Oscar Health's payer ID?

The letters OSCAR, with Change Healthcare claims CPIDs 9638 and 7468 for clearinghouse routing.

Is Oscar Health the same company as Aetna?

No. They are separate, competing insurers. The connection some people are thinking of is Mark Bertolini, Aetna's former CEO, who became Oscar's CEO in 2023.