Timely Filing Deadlines and the Cost of an Unanswered Payer Call

One calendar year.

That is the general timely filing limit for Medicare fee-for-service claims. CMS requires claims to reach the correct Medicare Administrative Contractor no later than one calendar year after the date of service, subject to limited exceptions. Claims arriving after that deadline are generally denied for untimely filing.

The simplicity of that number can create the wrong expectation for the rest of revenue cycle operations. There is no single timely filing deadline that an RCM team can safely apply across its entire payer mix. Requirements can vary by program, payer, plan, state, contract, claim type and circumstance.

That variation changes the economics of payer follow-up because an unresolved claim does not simply become older. In some circumstances, it moves closer to a deadline that can constrain the provider's options.

An unanswered payer call therefore has two costs: the staff time consumed by the attempt and the time the account loses while the underlying issue remains unresolved.

Timely Filing Is a Claim Lifecycle Constraint

Timely filing requirements establish the period in which a claim must be submitted. The basic concept sounds straightforward, but the operational questions appear immediately.

Which date starts the clock? What constitutes submission? Which deadline applies to this coverage? Does a corrected claim have a different requirement? What happens when another payer should have processed the claim first? Are exceptions available under the applicable rules?

Those questions cannot be answered safely with one universal number. Even government programs illustrate the differences. Medicare fee-for-service generally uses the one-calendar-year filing limit described above, while Medicaid operates under a separate federal framework. Under 42 CFR § 447.45(d)(1), a Medicaid agency must require providers to submit all claims no later than 12 months from the date of service. States can have more stringent requirements within that federal framework.

Commercial and managed care requirements can introduce further variation. CMS guidance notes that, where state guidance does not establish a specific provider submission requirement for Medicaid managed care, timely filing requirements may vary by plan.

For an RCM team, the practical rule is therefore simple: store and maintain the filing requirements applicable to the organization's actual payer relationships instead of relying on a generic industry deadline.

A Submitted Claim Can Still Have Deadline Risk

Submitting the original claim on time does not mean the account can safely disappear into a follow-up queue. Imagine a claim submitted comfortably inside the applicable initial filing period. Weeks later, the team discovers that the payer has no record of it. Another account receives a rejection requiring correction. A third was submitted to the wrong coverage because eligibility information was incomplete.

Each claim may now require another action. The deadline question becomes specific to the circumstances: what filing or resubmission requirements apply to the next action, and what evidence does the organization have showing what occurred previously?

This is where claim history becomes important. A revenue cycle team should be able to reconstruct when the original claim was submitted, how it was submitted, what response was received and what subsequent actions occurred. Where the applicable payer process recognizes proof of timely submission or an exception, the team needs the documentation required by that process.

The exact rules vary, so staff should work from current payer, program and contractual requirements rather than assumptions. From an operational perspective, the lesson is broader: timely filing should remain visible during follow-up because the next required action may also be time sensitive.

Unanswered Calls Consume Two Scarce Resources

Suppose an A/R representative calls about a claim and spends 25 minutes navigating an IVR and waiting on hold. The call disconnects before the representative obtains a useful answer.

The obvious loss is 25 minutes. The less visible loss is position in the queue. The claim still requires follow-up, so it returns to future work alongside new accounts entering the queue. If staff capacity is already constrained, the next attempt may occur days or weeks later. One failed contact is unlikely to determine the fate of a claim by itself. Repeated across a large backlog, however, unsuccessful attempts consume the same capacity needed to investigate accounts approaching meaningful deadlines. This is why call productivity should not be measured solely by attempts. A better question is how much work produces a usable result.

If ten representatives make 300 calls but only 170 return enough information to determine the next action, the operation has 170 useful outcomes and 130 unresolved attempts. The unresolved accounts remain part of future demand. As that demand compounds, older accounts compete with newer ones for the same staff hours.

Aging and Deadline Risk Are Related but Different

An old claim deserves attention, but age alone does not tell the team how urgently it needs action. Consider two claims that are both 100 days old.

The first has a filing requirement that leaves substantial time for the relevant next action. The second is approaching an applicable deadline and has an unresolved submission problem.

Giving both claims identical priority because they share the same age ignores the more important distinction. A stronger work queue combines age with deadline exposure.

Teams can classify accounts according to factors such as:

This turns timely filing from a static reference table into a prioritization signal. A young account with a short applicable window may deserve attention before an older account with significantly more time remaining. Queue priority should reflect operational risk, not age alone.

The Most Expensive Call Can Be the One Made Too Late

Revenue cycle teams sometimes discover filing problems during routine status follow-up. A representative calls expecting to ask when a claim will be paid and instead learns that the payer cannot locate it. The account then shifts immediately from ordinary status follow-up into research.

When was it submitted? Was it accepted electronically? Was it sent to the correct destination? Does the organization have an acknowledgement or other evidence? What requirement applies now?

The earlier that discovery occurs, the more options the team may have under the applicable payer rules. Waiting longer compresses the time available to investigate and act.

This makes time to first meaningful status a useful internal measurement. Rather than asking only how quickly staff make the first follow-up attempt, measure how quickly the organization obtains enough information to understand the claim's actual state.

A call that produces no usable information may satisfy an activity target while leaving the underlying risk unchanged. That distinction becomes particularly important for large A/R queues where representatives cannot touch every account frequently.

Build Deadline Awareness Into the Queue

Teams should not expect representatives to memorize hundreds of filing rules. The relevant requirements should be maintained as operational data and surfaced where staff prioritize work. Because rules can change, the organization also needs ownership for keeping that information current.

At minimum, the workflow should make it possible to identify accounts approaching an applicable filing threshold. The next layer is connecting that information to claim status.

For example, an account approaching a deadline with confirmed receipt and normal processing may present a different follow-up need from an account approaching the same date with no evidence that the payer received the claim.

The combination of status and deadline creates useful prioritization. Automation can assist with the information-gathering side of that process. SuperDial reports a 90% reduction in payer call time. For an RCM team applying automation to aging claims, reduced calling time becomes operationally meaningful when it helps the organization retrieve usable statuses earlier and direct human attention toward accounts requiring intervention.

The goal is better control of the queue.

Where the Cost Shows Up

The cost of delayed follow-up rarely appears in one accounting line. Some of it appears as labor spent repeating calls. Some appears as growing backlog because unresolved accounts re-enter the queue. Some appears as additional research when staff have to reconstruct old submission histories. Some can become financial exposure when a required filing action is not completed within the applicable timeframe.

CMS is explicit about the consequence in Medicare fee-for-service: claims received after the timely filing deadline are denied, subject to limited exceptions. Other payer and program consequences depend on their applicable rules. Revenue cycle teams therefore need two forms of visibility at the same time. They need to know what the payer says about the claim, and they need to know how much time remains to take the next required action.

An unanswered payer call is costly when it prevents the team from obtaining the first piece while the second continues to change. The practical response is to prioritize for information, not merely activity: identify accounts with meaningful deadline exposure, retrieve their current status early enough to act and route exceptions to people before the remaining window becomes compressed.

That approach cannot eliminate timely filing requirements. It can prevent an ordinary unanswered status question from remaining unresolved until the calendar becomes the most important fact on the account.

Sources

• Centers for Medicare & Medicaid Services, Medicare Billing: CMS-1500 & 837P, Timely Filing: https://www.cms.gov/Outreach-and-Education/MLN/WBT/MLN4462429-MLN-WBT-1500/1500/lesson01/08/index.html
• Centers for Medicare & Medicaid Services, Medicare Claims Processing Manual, Chapter 1, Section 70: Time Limitations for Filing Part A and Part B Claims: https://www.cms.gov/regulations-and-guidance/guidance/transmittals/downloads/r2140cp.pdf
• 42 CFR § 447.45, Timely claims payment: https://www.law.cornell.edu/cfr/text/42/447.45
• Government Publishing Office, 42 CFR Ch. IV, 10-1-25 Edition, § 447.45: https://www.govinfo.gov/content/pkg/CFR-2025-title42-vol4/pdf/CFR-2025-title42-vol4-part447.pdf
• Centers for Medicare & Medicaid Services, State Toolkit for Validating Medicaid Managed Care Encounter Data: https://www.medicaid.gov/medicaid/downloads/ed-validation-toolkit.pdf

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