Revenue performance
Healthcare Claim Denial Cost Calculator
Quantify what denials cost in three separate ways: revenue that is never paid, staff time spent reworking claims, and cash held up while denials are resolved. Then test how those figures change at a lower denial rate.
- What it calculates
- Denied claims, denied dollar value, recovered vs. written-off vs. open value, rework cost, cash tied up in denials, and denial-rate scenarios.
- Who it is for
- Revenue cycle directors, denial management leaders, CFOs and PE operating partners sizing a denial-prevention initiative.
- What you'll need
- Monthly claims, average allowed per claim, initial denial rate. Optional: recovery and write-off shares, rework cost, days to resolve.
- Key rule
- Recovered + written off + still open = 100% of denied value. The calculator flags inputs that exceed that.
Calculator
Use a trailing-3- or 12-month average for claims volume and denial rate. Results annualize monthly figures by multiplying by 12.
Enter claims volume, average allowed amount and denial rate
These three inputs define denied volume and value. Everything else is optional.
Where denied value ends up
| Outcome | Share | Annual value | What it represents |
|---|
Combined margin effect
Two different kinds of cost that do not overlapWrite-offs are revenue never received; rework is operating expense. They are separate dollars, so they can be added. Recovered value is excluded because it was eventually paid.
What happens if denial volume decreases?
Each scenario lowers the initial denial rate and holds claims volume, average value, outcome shares and rework cost constant. It shows the size of the effect, not whether a reduction is achievable or what prevention would cost.
| Measure | Current | Scenario | Change |
|---|
Common sources of denials
Denials usually originate well before the claim is submitted. The codes below are examples of X12 Claim Adjustment Reason Codes (CARCs) frequently associated with each category. Payers apply codes differently, so treat them as starting points for analysis.
| Category | Typical origin | Example CARCs | What prevention usually involves |
|---|---|---|---|
| Eligibility & coverage | Front end: scheduling, registration | 27, 31, 22 | Real-time eligibility checks before the visit and at check-in; coordination-of-benefits verification. |
| Prior authorization | Front end: order and scheduling | 197 | Payer- and procedure-specific authorization rules, tracking of authorization numbers and visit limits. |
| Coding | Mid cycle: coding and charge capture | 4, 11 | Coding edits, modifier logic, diagnosis-to-procedure validation, coder education. |
| Medical necessity | Clinical documentation and ordering | 50 | Coverage policy checks at order entry, documentation that supports the service. |
| Documentation & missing information | Mid cycle and claim submission | 16, 252 | Claim scrubbing, attachment workflows, complete provider and referral data. |
| Timely filing | Back end: submission and follow-up | 29 | Payer-specific filing-limit tracking, work queues prioritized by days remaining. |
| Duplicate claims | Claim submission and resubmission | 18 | Corrected-claim frequency codes, status checks before resubmitting. |
| Demographic errors | Front end: registration | 31, 16 | Insurance card capture, subscriber data validation, registration quality audits. |
| Payer-specific rules | All stages | 96, varies | Maintained payer rule libraries, policy-change monitoring, contract-specific edits. |
Code numbers from the X12 CARC list. Remittance Advice Remark Codes (RARCs) usually provide the additional detail needed to classify a denial correctly.
How this calculator works
Assumes denied claims average the same allowed amount you enter.
Written off = Denied value × Write-off %
Still open = Denied value × (100% − Recovery % − Write-off %)
Each denied dollar is assigned to exactly one outcome, so recovered and written-off amounts never overlap.
Share worked defaults to 100% if left blank.
Little's Law: average balance in a queue = daily inflow × average time in queue. Applies to value that is eventually paid.
Methodology decisions
Common approachReport recovered and written-off value side by side as independent estimates.
This toolTreats them as shares of the same denied value, shows the open remainder, and flags inputs that exceed 100% instead of computing them.
Common approachRework cost = every denial × cost per denial.
This toolAdds an optional share-worked input, because denials written off without rework do not incur rework cost.
Common approachDays to resolve is shown but not used.
This toolConverts it into the average cash balance held in denial resolution, a defensible working-capital measure.
Common approachShow the scenario as "savings."
This toolShows the change in exposure and cost only, with no claim that the reduction will be achieved or what it would cost to achieve.
Assumptions & limitations
- Denied value is not lost value. Only the write-off share represents revenue that is never received, and that share is your assumption.
- Average values. Denied claims are valued at the average allowed amount entered. Mix by payer and service line can change this materially.
- Rates are interdependent. Lowering the denial rate may change the mix of remaining denials, their recovery rate and their rework effort. The scenario holds those constant.
- Counting rules differ. Some systems count each denied line, others each claim; some include clearinghouse rejections. Use one definition throughout.
- Excluded costs. The calculation excludes the cost of capital on delayed cash, payer recoupments, and prevention costs.
Request an RCM Assessment
A denial assessment uses your 835 remittance data to rank denials by dollars, payer and root cause, separates preventable from clinical denials, and sizes what prevention would require.
Frequently asked questions
How do you calculate the cost of claim denials?
Start with denied claims (claims × denial rate) and their value (denied claims × average allowed amount). Then separate the outcome: the share eventually written off is lost revenue, the share recovered was delayed rather than lost, and every denial that is worked carries an administrative rework cost. This calculator shows each component separately.
What is the difference between denial write-offs and recovered denials?
Recovered denials are eventually paid after correction or appeal; their cost is the rework effort and the delay. Written-off denials are never paid. A denial can only end in one of these outcomes or remain open, so the recovered and written-off percentages together cannot exceed 100%. The remainder is treated as still open or unresolved.
What does it cost to rework a denied claim?
It varies widely by denial type, specialty, payer and how work is organized. Rather than assert an industry figure, this calculator asks for your own estimate. A practical way to estimate it is fully loaded staff cost per hour × average minutes spent per denial ÷ 60, plus any per-appeal vendor or postage costs.
Should denial rate be measured by claims or by dollars?
Both are useful. Claim-count rates show workload; dollar-based rates show financial exposure. HFMA's MAP Key for remittance denial rate is calculated on claims denied ÷ claims remitted. This calculator uses a claim-count rate together with an average allowed amount, so if your denied claims are typically higher or lower in value than average, enter the average allowed amount for denied claims.
Will reducing our denial rate by 2 points save the amount shown?
Not necessarily. The scenario shows how the figures change if denial volume is lower and everything else stays the same. Actual results depend on which denials are prevented, what prevention costs, and whether the remaining denials are harder to resolve. Treat the scenario as sizing, not a forecast.
What are the most common causes of claim denials?
Typical categories include eligibility and coverage, prior authorization, coding, medical necessity, missing documentation, timely filing, duplicate submissions, demographic errors and payer-specific rules. The educational table on this page lists each with example claim adjustment reason codes and where in the revenue cycle it usually originates.
Review, sources & updates
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Last updated
· Methodology v1.0
Formula or definition changes are versioned and dated on this page.
Sources
- Healthcare Financial Management Association (HFMA). MAP Keys: industry-standard revenue cycle KPIs.
- X12. Claim Adjustment Reason Codes (CARC) code list.
- X12. Remittance Advice Remark Codes (RARC) code list.
No industry benchmark figures are reproduced on this page. Where a comparison is useful, the tool asks you to enter your own reference value and record where it came from.