{"id":36350,"date":"2026-05-05T19:11:08","date_gmt":"2026-05-05T19:11:08","guid":{"rendered":"https:\/\/vigilantbillingms.us\/staging\/staging\/?p=36350"},"modified":"2026-06-05T14:34:41","modified_gmt":"2026-06-05T14:34:41","slug":"aetna-timely-filing-limit","status":"publish","type":"post","link":"https:\/\/vigilantbillingms.us\/staging\/medical-billing\/aetna-timely-filing-limit\/","title":{"rendered":"Aetna Timely Filing Limit: What You Need To Know | VMG"},"content":{"rendered":"\t\t
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\n\t\t\t\t\tAetna Timely Filing Limit<\/span>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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\n\t\t\t\t\tWhat Healthcare Providers Need to Know\n<\/span>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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In the United States alone, healthcare providers are losing millions in revenue that could be reimbursed annually not due to bad clinical care, wrong diagnosis or coding mistakes, but due to one administrative deadline that was missed. That deadline is referred to as the Timely Filing Limit(TFL), and among providers who deal with Aetna, it is one of the most financially significant policies in the whole revenue cycle.<\/span>
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<\/span>When a claim is submitted even one day beyond Aetna’s filing window, it is automatically denied with denial code CO-29, and in nearly all cases, that denial is permanent. The provider cannot reverse it through a standard appeal, and billing the patient for the outstanding balance is generally prohibited under the terms of the provider contract.<\/span><\/p>

This blog covers everything, <\/span>how the policy of Aetna has evolved over the years, what are the existing deadlines in each type of plan, what happens when the clock runs out and most importantly, how practices of all sizes can develop bulletproof systems to make sure a deadline is never missed again.<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t

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What Is a Timely Filing Limit?\n<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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A timely filing limit (TFL) is the maximum number of calendar days a healthcare provider has to submit a claim to an insurance payer following the date of service. The clock starts on the date the patient was seen, not the date the bill was generated, not the date the claim was created in your billing software, and critically, not the date you clicked ‘submit.’<\/span><\/p>

Aetna measures its timely filing deadline based on the date the claim is received by its system either through the EDI electronic gateway or, for paper claims, the date of arrival at Aetna’s physical mailroom. This distinction creates a hidden risk for practices that submit close to the deadline and assume a same-day credit applies.<\/span><\/p>

Once a claim passes the filing window without being received in a processable state by Aetna, it is denied. A resubmission of that same claim does not reset the original clock, the clock was started on the date of service and only stops when a valid, accepted claim (not merely a submitted one) is registered in Aetna’s system.<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t

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\n\t\t\t\t\tDID YOU KNOW?\n<\/span>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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A rejected claim is not the same as a denied claim.<\/strong>
A rejection means the claim was returned before entering Aetna’s adjudication queue, often due to a formatting error, invalid member ID, or missing required field. Because a rejected claim was never ‘received and accepted,’ the original filing clock is still running. Providers who confuse rejections with denials sometimes wait too long to resubmit and inadvertently let the deadline pass.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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How Aetna's Filing Policy Has Evolved\n<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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Understanding Aetna’s current filing rules is easier when viewed against the background of how those rules have changed over time. Two policy shifts stand out as the most impactful for providers:<\/span><\/p>

The 2022 Non-PAR Provider Change<\/b><\/h3>

As of January 1, 2022, Aetna cut the timely filing cap on non-participating (non-PAR) providers by half, down to 12 months from 27 months, on traditional medical claims only. This was a major narrowing of a window that had in the past been one of the broadest in terms of out-of-network providers.<\/span><\/p>

Practices that were still operating under the assumption of a 27-month window continued submitting claims on old timelines well into 2023 before the denials made the policy change apparent. For specialty practices and hospitals with high out-of-network volumes, the financial impact was substantial.<\/span><\/p>

Aetna Better Health of Florida: The 180-Day Standard<\/b><\/h3>

Aetna’s official provider documentation for Aetna Better Health of Florida (Medicaid) specifies a 180-day filing limit for participating providers from the date of service, and a 180-day window from the date of discharge for inpatient services. This serves as the reference standard for Medicaid-based Aetna products, though other states may operate under slightly different state-mandated rules.<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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Aetna Timely Filing Limits by Plan Type\n<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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Aetna administers multiple product lines, and the filing deadline differs meaningfully across them. The table below reflects current 2025 standards based on Aetna’s provider documentation and multiple verified billing resources. Note that your specific provider contract may override these general standards and always cross-reference with your signed agreement.<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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