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835vs Contract
50States
Underpayment Recovery Services
Underpayment recovery finds claims that were paid — but below the contracted fee schedule or the Medicare allowable — then reopens them with the payer. Vector Medical Billing identifies those short pays from the 835 and works the variance as a separate engagement from Jamaica, NY, for practices in all 50 states.
Separate engagement
What underpayment recovery is
Paid is not always paid correctly. Underpayment is a remittance that lands below what the contract or Medicare allowable says that line should pay.
Payment posting records what the payer sent. Underpayment recovery tests that amount against the loaded fee schedule or allowable — then disputes confirmed short pays instead of writing them off as contractual by habit.
On Vector’s services list this is a separate engagement — scoped after contracts and remittance data are available, not a silent line inside the monthly billing percentage.
Underpayment vs denial vs correct contractual write-off
Three different outcomes on the remittance. Mixing them sends work to the wrong queue.
Underpayment
The line paid, but below the contracted allowed amount or Medicare allowable for that code and setting. Recovery is reopen / reconsideration with contract proof — not a denial appeal template.
Denial
The payer refused the line ($0 with a CARC). That belongs in denial management — corrected claim or appeal — not underpayment math.
Correct CO write-off
The gap between billed charge and contracted allowed amount is often a legitimate contractual adjustment. That is not an underpayment when the paid amount matches the allowed rate.
How variances get sorted
Not every gap between billed and paid is recoverable. The first step is classification.
| Variance type | What it usually means | Next action |
|---|---|---|
| Expected | Patient cost-sharing, correct multiple-procedure reduction, valid bundling under the contract | No underpayment dispute — posting already correct |
| Provider-correctable | Wrong units, missing modifier, or coding that caused a reduced allowed amount | Corrected claim or coding fix — may route through audit / coding, not payer rate dispute |
| Payer underpayment | Paid below loaded contracted rate or Medicare allowable with no valid contract reason | Reopen / reconsideration with fee schedule or allowable citation |
| Systemic pattern | Same CPT short-paid across many claims for one payer | Bulk dispute package; flag for contract / rate-load conversation |
Without a loaded fee schedule, historical allowed amounts can be a working baseline until the practice obtains current rates from the payer. Medicare-percentage contracts need the correct locality and year files.
How Vector Medical Billing works underpayments
Contract rates first. Then line comparison. Then reopen what is confirmed short.
1
Load rates
Contract fee schedules, carve-outs, and Medicare allowables that apply to the review window.
2
Compare 835s
Line-level expected vs paid — using remittances already posted in your EHR.
3
Classify
Expected, provider-correctable, or payer underpayment — with dollar variance noted.
4
Reopen
Confirmed short pays go back to the payer with contract or allowable support; payments rechecked on posting.
What a variance line looks like
Illustrative composite — not a client recovery result and not a promised dollar amount.
| Field | Example entry |
|---|---|
| CPT / payer | 99214; commercial contracted plan |
| Contract expected | $128 allowed per loaded fee schedule |
| 835 paid | $102 allowed / paid (after PR) |
| Variance | $26 below contract — no valid reduction reason on remittance |
| Class | Payer underpayment — reopen with schedule exhibit |
| Not this | Same code paid $128 with CO write-off of billed charge → correct CO, not underpay |
We do not publish a Vector underpayment recovery percentage on this page without a scoped engagement and documented variance method.
What underpayment recovery is not
Related services stay separate so the quote matches the work.
Not denial management
Refused lines with CARCs go to denial management. Underpayment starts from a paid line that is short.
Not a coding audit alone
Chart-level coding accuracy is billing and coding audit. Underpayment assumes the rate math after a paid remittance.
Not OON / IDR by default
Out-of-network negotiation and Independent Dispute Resolution are a different service when that is the dispute path.
How this engagement is scoped
Separate from the monthly billing percentage. Quote matches the review window.
How it is priced
Underpayment recovery is a separate engagement. The quote depends on how many payers, whether fee schedules are already on file, the review window, and how variances will be worked. Market vendors sometimes use contingency fees on recovered dollars; your Vector rate is written for that scope — not invented on this page.
Send contracts or fee schedules with a sample of remittances for a written proposal.
What we need to start
Payer contracts or fee schedules, 835 / payment history for the review period, and EHR access so expected vs paid can be tied to claim lines.
Short pays checked against the contract — then reopened
Tell us which payers and date range to review. We reply with how rates will be loaded, how variances will be classified, and a written fee — without promising a recovery percentage we have not measured.
835
Line Compare
Rate
vs Contract
Separate
Engagement
50
US States
Underpayment recovery questions
Straight answers tied to the sections above.
What is underpayment recovery in medical billing?
Finding paid claim lines that landed below the contracted fee schedule or Medicare allowable, then reopening those short pays with the payer using remittance and rate support.
Is every write-off an underpayment?
No. The gap between billed charge and contracted allowed amount is often a correct contractual adjustment. Underpayment is when the paid/allowed amount itself is below the contract rate.
How is this different from a denial?
A denial refuses the line. An underpayment pays the line but short. Denial work uses CARC paths; underpayment work uses fee-schedule math.
Do you need our contracts?
Yes when available. Without schedules, historical allowed amounts can start the screen until current rates are obtained from the payer.
Is underpayment recovery in the monthly billing fee?
No by default. It is a separate engagement unless your written contract explicitly includes it.
Do we change our EHR?
No. Comparisons and reopen work run against remittances and claims in the system you already use.