Denied claims rarely lose value because nobody worked them hard. They lose value because nobody worked them first. A claim that sits three weeks in a queue has already spent 21 days of a 120-day Medicare filing window and every day of the promise made to the front office. The cycle below puts triage, filing, follow-up and reconciliation on a seven-day clock, so the queue empties in order of what can still be recovered.
What this covers
- Every denial carries two clocks: the payer’s window to challenge the decision and the practice’s own window to fix the claim underneath it.
- Triage by the reason code and the dollars at risk, because a claim missing data and a claim denied on medical necessity need different work.
- File appeals inside a fixed internal window, five business days after triage, so the external deadline never becomes the constraint.
- Give each denied claim one named owner and one next action date, and record the date the payer received the appeal.
- Reconcile on Friday with five numbers, then name the one cause that gets fixed upstream next week.
Recovery effort is rarely the constraint. Recovery order is.A queue sorted by reason code and dollars reaches the claims with the most at stake and the least time left.
The numbers that decide whether a denial is recoverable are days remaining and dollars at risk. A file worked in week one can absorb a denial, a second-level request and a payer that misses its own decision window. The same file worked in week six has one shot. Speed is not a virtue in this work, it is the inventory of options a practice gets to keep.
This applies to any specialty, and it bites hardest in unit-based practices. One expired authorization in an ABA schedule can deny a month of applied behavior analysis sessions at once, so the first rule of the cycle is to rank by dollars rather than by whoever opened the mail.
Two clocks start on the notice date
Every denial carries two clocks. One is the payer’s window to challenge the decision. The other is the practice’s own window to fix the claim underneath it. For Original Medicare, the claim had to reach the contractor within one calendar year of the date of service under 42 CFR 424.44(a)(1), and a denial does not extend that period. The two clocks do not share an end date.
Payer windows are not standardized. The examples below show how far apart they sit, and each one has to be confirmed in the contract or the provider manual before anyone builds a calendar on it.
| Payer or plan type | Window to file the challenge | When the window starts |
|---|---|---|
| Original Medicare, redetermination by the MAC | 120 days | Receipt of the initial determination, presumed five days after the notice |
| Original Medicare, reconsideration by the QIC | 180 days | Receipt of the redetermination notice, same five-day presumption |
| Medicare Advantage plan reconsideration | 60 days | Receipt of the plan’s determination, presumed five days after the notice date |
| Medicaid managed care plan appeal | 60 days | The date on the adverse benefit determination notice |
| ERISA group health plan internal appeal | At least 180 days | Receipt of the adverse benefit determination |
| Commercial example, UnitedHealthcare | 12 months to complete a reconsideration and then an appeal | The claim determination |
| Commercial example, Aetna | 180 days standard, with state exceptions that run to 12 or 24 months | Notice of the claim determination |
Filing windows, decision windows, required forms and the address to file at vary by payer, plan and state, and Medicare Advantage and Medicaid rules change with the contract year. Read the deadline on the denial notice, then confirm it in the contract or the provider manual. No window in this article is universal.
Whatever the external window allows, the internal target should be shorter. A practice that files five business days after triage keeps over 100 days of a Medicare redetermination window in reserve, and that reserve pays for the second request when the first is denied, which is denial management at speed.
Days 1 and 2: triage by reason code and dollars
A worklist sorted by arrival date mixes claims that need a corrected claim, claims that need a clinical argument, and claims that should never have been appealed. Sort by the code that explains the denial, then by dollars at risk inside each group.
| What the remittance says | What is usually wrong | First move |
|---|---|---|
| 16 (CO), claim lacks information or has a submission or billing error | Missing or invalid data on the claim | Correct and resubmit, or appeal if the window has closed |
| 252 (CO) with RARC N206 or N237 | The record does not match the claim, or is incomplete | Send the note that carries the missing element |
| 197 (CO), authorization absent | No authorization on file for that date of service | Check the authorization record and its date range |
| 198 (CO), authorization exceeded | Units billed beyond the approved range | Reconcile units billed against units authorized |
| 151 (CO) with RARC N362 | Units or frequency above the payer’s stated maximum | Match the session note to the units billed |
| 50 (CO), not medically necessary | The record as submitted does not meet the coverage policy | Read the policy, then appeal with the plan of care |
| 29 (CO), time limit for filing has expired | The payer says the claim arrived late | Send the clearinghouse acceptance report or the 277CA |
| 45 (CO), charge exceeds the fee schedule | Contractual write-down to the allowed amount | Nothing. It is not a denial |
RARC MA130 says the claim is unprocessable. The code states its own remedy: no appeal rights are afforded, and the practice submits a new claim with complete and correct information. An MA130 line in the appeal queue burns a filing week and returns nothing.
Set an amount below which an appeal costs more in staff time than the claim pays, and route those lines to the write-off report. In a unit-based practice the floor matters more, because one authorization gap can deny a month of 97153 units at once. Those denials belong at the top of the queue in week one.
Two fields on every triaged line make the rest of the week mechanical: one owner and one next action date. The owner is a name, and the action is specific: request records, correct and resubmit, or file a redetermination.
Days 3 and 4: file inside a fixed window
Filing is the step practices slow down by trying to make each appeal perfect. A fixed internal window removes the discussion. Everything triaged on Monday and Tuesday gets filed by Thursday of the same week.
Gather the session note with start and stop times, the treatment plan, the authorization, and the eligibility check for the date of service. The argument is built from the record.
For Original Medicare, evidence submitted after the request automatically extends the contractor’s decision window by up to 14 calendar days for each submission. Send the full packet at the start and keep a copy.
Most Medicare contractors accept electronic redetermination requests through their portal, and commercial payers push providers to their own portal rather than to fax. The request counts as filed on the date the payer receives it.
42 CFR 405.944(b) says a written request that is not on a standard CMS form is still accepted if it names the beneficiary, the Medicare number, the specific service and date, and the party filing.
A Medicare contractor generally decides a redetermination within 60 days of receipt. A Medicaid managed care plan has no longer than 30 calendar days, with up to 14 more in limited cases. Put the expected decision date on the appeal log the day the appeal goes out.
An Original Medicare redetermination has no minimum amount in controversy, and neither does a QIC reconsideration. The dollar threshold appears at the third level, where a hearing requires $200 in dispute for calendar year 2026. Behavioral health claims can be appealed at the first two levels without a dollar bar, which makes the dollar floor an internal rule rather than an external one.
A practice that runs this step every week needs more than a template, which is where denial management solutions usually enter the conversation: the work is not hard, but it is relentless when volume grows.
Days 5 and 6: follow-up owned by name
Most delayed recoveries are not denied appeals. They are appeals nobody checked. Follow-up works when the log names a person and a date instead of a team and an intention.
- One owner per denial, entered as a name. A denial with two owners has none.
- A next action date on every open line, never blank and never already in the past.
- The filing date recorded as the date the payer received the request, with the confirmation stored next to it.
- A decision date diarized at filing, taken from the payer’s published window rather than from habit.
- An escalation list for appeals that pass their decision window with no answer, reviewed at the start of each week.
- The second-level deadline recorded the day the first-level decision lands, because that clock starts on arrival.
Escalation rules matter because a silent payer is a decision, not a waiting game. Where a Medicare reconsideration sits at the QIC level and no decision arrives inside the window, the appeal can move to the next level on the record already filed, and commercial provider manuals set their own expectations for acknowledging a dispute.
An appeal filed in week one with the full record can be escalated or argued at the next level using the same documents. An appeal filed in week six with half the record has to be rebuilt under a countdown, and rebuilt files are the ones abandoned when Friday brings a full queue.
Day 7: the Friday reconciliation
The week closes with five numbers, read in one sitting, from one worklist. The output is not a report. It is a decision about what happens on Monday.
| Number | Where it comes from | What it changes |
|---|---|---|
| New denial dollars this week | Remittance posting, grouped by reason code | The size and shape of next week’s triage |
| Dollars filed in appeals, by level | Appeal log, filed date | The cash expected in 30 to 90 days |
| Dollars recovered | Payments matched back to the appeal that produced them | Whether the appeal strategy is working |
| Appeals past the payer’s decision window | Filing date plus the published decision window | Monday’s escalation list |
| Top three reason codes by dollars | Reason codes from the remittance advice | One upstream owner and one fix for the coming week |
The last row is the one that shrinks the queue. A reason code with no owner outside the appeal process returns next month with the same dollars attached.
A single practice-wide denial rate hides the payer producing most of the work. Split the reconciliation by payer once a month, and weekly if the practice bills more than three of them.
What the seven-day cycle cannot fix
A faster appeal does not repair a claim that should not have gone out. Authorization and documentation denials start before the charge is created. In Maryland’s Medicaid program, all applied behavior analysis services require prior authorization, the authorization is valid for a maximum of 180 days, and a reassessment must be completed before the window ends. A service that was never pre-authorized cannot be billed at all, and no appeal converts it into revenue.
- Reauthorization lead time: diarize the end date of every authorization and start the reassessment well before it, because the payer’s review has its own queue.
- Unit reconciliation: compare units billed against units authorized before the charge leaves the system, not after the remittance arrives.
- Documentation: start and stop times, a reference to the treatment plan, and a legible signature with printed name and title. A record that does not match the claim produces RARC N206, and a thin record produces RARC N237.
- Eligibility and enrollment: a rendering provider who is not credentialed with the plan produces CARC 185, and an appeal will not change that.
Each item belongs to a person outside the appeal queue. When that happens, the queue stops being the place where causes are discovered and becomes the place where exceptions are handled.
Questions about running a denial recovery workflow
It depends on the payer and the plan. Original Medicare allows 120 days from receipt of the initial determination for a redetermination, then 180 days from the redetermination notice for a QIC reconsideration. Medicaid managed care allows 60 days from the date on the adverse benefit determination notice, Medicare Advantage 60 days from receipt of the plan’s determination, and ERISA plans at least 180 days. Confirm your own window in the contract.
CARC 16 says the claim lacks information or has a submission or billing error, and the code requires at least one remark code to explain which element is wrong. Most CARC 16 claims are fixed faster by correcting the claim and resubmitting it than by appealing. Appeal when the payer’s filing window has already closed and a corrected claim would arrive late.
N206 says the supporting documentation does not match the information sent on the claim, so the note and the claim disagree on something the payer can see. N237 says the patient medical record is incomplete or invalid for the service. Both codes point at the record rather than at the payer’s judgment, which makes the fix documentation and the appeal an argument built on the corrected note.
Yes, when an authorization exists and the payer could not see it. Send the authorization number, the approved date range and the session note with the appeal. When no authorization exists and the service was never pre-authorized, many payers and state programs treat the service as non-billable, so the appeal runs out of road and the fix belongs in the authorization calendar.
RARC MA130 reports an unprocessable claim. The narrative states that no appeal rights are afforded and directs the provider to submit a new claim with complete and correct information. There is no determination to challenge yet, so an appeal is filed against nothing. Fix the data, resubmit, and watch the filing deadline that applies to the new submission.
Weekly, on the same day, with the same five numbers: new denial dollars, dollars filed, dollars recovered, appeals past the payer’s decision window, and the top reason codes by dollars. A monthly review is too slow to change a queue, and a daily review produces motion without a decision. End the meeting with one named upstream fix and one escalation list.
The bottom line
A seven-day cycle does not require better people, only a queue that respects two clocks, one owner per claim and one hour on Friday to read the numbers. Triage by reason code and dollars, file inside a fixed window, follow up by name, and reconcile before the week ends. What comes back is cash recovered and a queue that stops growing.
How many of your denied claims are still inside their filing window?
Send us one month of remittance advice and your current denial worklist. We will rebuild the queue by days remaining and dollars at risk, group the denials by reason code, mark the ones with no appeal rights, and show you which payers are missing their own decision windows. Our team runs outsourced medical billing services for practices that want the weekly cycle run for them, with a focus on ABA and behavioral health.
Request a free denial recovery auditThis article describes general billing practice and the payer and regulatory rules in force at the time of writing. Filing windows, decision windows and coverage rules vary by payer, plan and state, so confirm the deadline and the required elements on your own denial notice and in your contract before you file.
