How to Measure the Financial Impact of Authorization-Related Denials

Prior authorization is often measured as an administrative task: Was the request submitted? Was it approved? Was the patient scheduled?

For a medical practice, those questions are only part of the picture.

When authorization-related problems result in denied claims, the financial impact can extend beyond the amount of the denied claim. Staff time is consumed, payment is delayed, AR grows, appeals may be required, and some balances may ultimately become uncollectible.

The more useful question for practice leadership is therefore:

How much revenue is being placed at risk by authorization problems, and what is the practice spending to recover it?

That requires connecting authorization data with claims, AR, collections, and staff workload.

1. What Counts as an Authorization-Related Denial?  

An authorization-related denial generally occurs when a payer does not reimburse a claim because the required authorization was:

• Not obtained

• Not obtained within the required timeframe

• Submitted for the wrong service

• Associated with incorrect information

• Expired

• Exceeded in visits, units, or services

• Not properly documented or linked to the claim

The exact requirements vary by payer, plan, service, and benefit.

CMS distinguishes prior authorization from pre-claim review and explains that authorization involves obtaining a payer decision before the service is furnished. CMS also notes that these processes do not change the underlying medical-necessity or documentation requirements; they move review earlier in the process.

That distinction is important when analyzing financial impact.

A denial attributed to "authorization" may actually originate from an earlier workflow failure.

2. Start With the Number of Authorization-Related Denials  

The first measurement is straightforward:

How many claims were denied because of authorization issues?

Track:

• Number of authorization-related denials

• Number of denied claim lines

• Number of patients affected

• Number of encounters affected

But volume alone is not enough.

A practice with 50 authorization denials could have less financial exposure than a practice with 20 denials if the second practice's affected services have significantly higher reimbursement.

This is why the next measurement matters.

3. Measure the Dollar Value of Denied Claims  

Calculate the total amount associated with authorization-related denials.

For example:

Authorization-denied claim amount = $42,000

This provides the gross financial exposure.

However, it should not automatically be described as $42,000 of lost revenue.

A denied claim may subsequently be:

• Corrected

• Resubmitted

• Appealed

• Paid partially

• Paid in full

• Written off

The more accurate approach is to separate initial exposure from final financial loss.

4. Separate Gross Exposure From Actual Revenue Loss  

A useful reporting structure is:

Measure	What It Shows
Gross denied amount	Initial dollars associated with authorization denials
Recovered amount	Dollars eventually collected
Pending amount	Dollars still unresolved
Written-off amount	Revenue ultimately removed from expected reimbursement
Net financial loss	Amount not recovered after appropriate resolution efforts

This distinction prevents leadership from overstating the financial effect of denials.

HFMA recommends measuring denial write-offs separately because they represent reimbursement that has ultimately been lost after appeals are exhausted or the organization determines that recovery is not appropriate.

5. Measure the Recovery Rate  

A practice should determine how much of its authorization-denied revenue is ultimately recovered.

A simple measure is:

Authorization Denial Recovery Rate = Recovered Dollars ÷ Gross Authorization-Denied Dollars × 100

For example:

• Gross authorization denials: $50,000

• Recovered: $40,000

Recovery rate: 80%

The remaining $10,000 requires further classification.

It may be:

• Still pending

• Appealed

• Corrected and awaiting payment

• Written off

• Determined nonrecoverable

This is more informative than simply reporting an 80% recovery rate without explaining the remaining balance.

6. Measure the Write-Off Impact  

The practice should separately track how much reimbursement is permanently lost because of authorization problems.

For example:

Authorization-related denial write-offs ÷ net patient service revenue

This provides context for the financial significance of the problem.

HFMA identifies denial write-offs as a core claim-integrity KPI because they indicate the final disposition of reimbursement that was not recovered.

Tracking this monthly can reveal whether authorization-related losses are:

• Increasing

• Decreasing

• Stable

• Concentrated within particular services or payers

  
  

7. Measure the Cost of Staff Time  

The financial impact does not stop at the denied claim.

Every authorization-related denial may require staff to:

• Review the claim

• Identify the denial reason

• Retrieve authorization records

• Contact the payer

• Obtain documentation

• Correct the claim

• Submit an appeal

• Follow up

• Document the outcome

That is operational cost.

A practice can estimate:

Denial management labor cost = Hours spent × Loaded hourly labor cost

For example, if staff spend 35 hours per month resolving authorization denials and the estimated loaded labor cost is $30 per hour:

35 × $30 = $1,050 monthly labor cost

The purpose is not to assign an exact cost to every individual claim.

It is to make the administrative burden visible.

HFMA notes that denials slow cash flow and require additional resources to pursue payment.

8. Measure the Cost of Delayed Cash  

A denied claim can eventually be paid but still create a cash-flow problem.

Consider:

Service provided → Claim denied → Correction → Appeal → Payer decision → Payment

The longer this cycle takes, the longer the practice's cash remains outstanding.

Track:

• Average days from denial to correction

• Average days from denial to appeal

• Average days from denial to resolution

• Average days from denial to payment

HFMA specifically identifies time from initial denial to appeal and time from initial denial to claim resolution as useful denial-management KPIs.

9. Measure Authorization Denials as a Percentage of All Denials  

Leadership should understand whether authorization is a major source of overall denial activity.

For example:

Authorization-related denials ÷ total denials × 100

If authorization accounts for 30% of all denials, it deserves substantially more attention than if it represents 2%.

But this metric should be interpreted alongside dollar impact.

A denial category can have:

• High volume / low dollar impact

• Low volume / high dollar impact

Both may require attention for different reasons.

10. Track Authorization Denials by Payer  

Payer-level analysis can reveal patterns that a practice-wide denial rate hides.

Track:

Payer	PA Denials	Denied $	Recovered $	Write-Off $
Payer A	18	$12,000	$10,500	$1,500
Payer B	7	$8,000	$5,000	$3,000
Payer C	21	$6,000	$5,800	$200

This helps distinguish between:

High-volume authorization problems

and

High-value authorization problems.

Neither should be evaluated solely by claim count.

11. Track the Root Cause, Not Just the Denial Code  

"Authorization denied" is not a sufficiently detailed management category.

Break authorization problems into causes such as:

• Authorization not obtained

• Incorrect authorization number

• Authorization expired

• Incorrect service authorized

• Incorrect provider/location

• Visit limit exceeded

• Units exceeded

• Referral missing

• Payer requirement misunderstood

• Authorization submitted too late

• Documentation insufficient for authorization

This allows the practice to identify where the process is breaking.

12. Connect the Denial Back to the Original Workflow  

This is where financial analysis becomes operational improvement.

For every major authorization-denial category, ask:

Where should this have been caught?

For example:

Missing Authorization  

Could have been identified during scheduling.

Expired Authorization  

Could have been identified during visit tracking.

Incorrect Number of Visits  

Could have been identified through authorization utilization monitoring.

Incorrect Provider or Location  

Could have been identified during authorization submission.

The objective is to move the control point earlier in the revenue cycle.

13. Measure Authorization Success Before the Claim Is Submitted  

HFMA includes a Service Authorization Rate for outpatient encounters as a revenue-cycle KPI.

The measure compares:

Authorized outpatient encounters ÷ outpatient encounters requiring authorization

HFMA describes this as an indicator of revenue-cycle process efficiency and effectiveness.

This is important because practices should not measure only what happens after a denial.

They should measure whether authorization requirements are being successfully completed before the claim becomes vulnerable.

14. Measure the Difference Between Preventable and Non-Preventable Problems  

Not every authorization denial is necessarily caused by practice error.

Some may result from:

• Payer processing problems

• Incorrect payer information

• Policy changes

• Coverage limitations

• Clinical criteria

• Administrative requirements

Therefore, the audit should distinguish:

Practice-controlled

from

Payer-controlled or externally driven

and

Undetermined

This prevents the practice from treating every denial as an internal failure.

15. CMS's 2026 Changes Make Denial Analysis More Useful  

Beginning in 2026, CMS's prior authorization final rule requires impacted payers to provide a specific reason for denied prior authorization decisions for medical items and services. The rule also establishes decision timeframes of 72 hours for expedited requests and seven calendar days for standard requests for applicable impacted payers, with program-specific details and exclusions.

This creates an opportunity for practices to improve their internal denial analytics.

Instead of recording:

"PA denied."

the practice can capture:

Payer → Service → Denial reason → Dollar value → Corrective action → Outcome

Over time, this creates a much more useful dataset.

16. Track Whether Appeals Actually Recover Money  

Appeal volume alone is not a meaningful financial KPI.

Track:

• Number of authorization denials appealed

• Dollar value appealed

• Number overturned

• Dollar value recovered

• Average time to resolution

HFMA specifically identifies the percentage of initial denials overturned as a claim-integrity KPI.

This helps leadership determine whether the appeal process is producing meaningful financial recovery.

17. Measure the Revenue at Risk Per Patient  

For recurring services, it can be useful to analyze authorization exposure at the patient level.

For example:

Patient → Authorization → Approved visits → Used visits → Remaining visits → Claims submitted → Claims paid

This can identify situations where:

• Authorization is nearing expiration

• Approved visits are almost exhausted

• Additional authorization is required

• Services are being scheduled beyond the approved period

The objective is to prevent an avoidable denial before the service occurs.

18. Build a Monthly Authorization Financial Dashboard  

A practical dashboard can include:

KPI	Monthly Measure
Encounters requiring authorization	—
Authorized encounters	—
Authorization-related denials	—
Authorization denial rate	—
Gross denied dollars	—
Recovered dollars	—
Pending denied dollars	—
Write-off dollars	—
Recovery rate	—
Average days to appeal	—
Average days to resolution	—
Appeal overturn rate	—
Staff hours spent	—
Estimated labor cost	—

This gives leadership a financial and operational view of the same problem.

19. Look at Trends Instead of One Month  

One month of data can be misleading.

A better approach is to compare:

Month → Quarter → Year-to-date

Look for:

• Rising denial volume

• Increasing denied dollars

• Declining recovery rates

• Longer resolution times

• Increasing write-offs

• Repeated payer-specific issues

A trend is generally more useful for operational decision-making than a single month's result.

20. Prepare for the Next Stage of Electronic Prior Authorization  

CMS is moving the industry toward greater electronic prior authorization.

For impacted payers, electronic Prior Authorization APIs are scheduled to go live beginning January 1, 2027. CMS says these APIs are intended to support information such as covered services, documentation requirements, authorization requests and responses, approval details, and denial reasons.

This does not mean practices should assume every payer will immediately operate through one standardized workflow.

It does mean practices should begin asking whether their own systems can:

• Capture authorization data electronically

• Track status

• Connect authorization information to scheduling

• Connect authorization information to claims

• Preserve decision history

The quality of the internal workflow will remain important even as payer technology evolves.

21. The Most Important Question: What Could Have Been Prevented?  

After calculating the financial impact, divide the findings into:

Preventable  

The practice could reasonably have caught the problem before the service or claim.

Recoverable  

The problem occurred, but the practice has a reasonable pathway to obtain payment.

Nonrecoverable  

The claim cannot reasonably be recovered or has been appropriately written off.

Payer/System Issue  

The practice followed the applicable process, but the payer or system appears to have caused the problem.

This classification creates a more accurate picture of the true financial opportunity.

Conclusion  

Measuring authorization-related denials should go far beyond counting denied claims.

A useful financial analysis connects:

Authorization volume → Denial volume → Denied dollars → Recovery → Write-offs → Staff cost → Delayed cash → Root cause

That approach shows not only how much revenue is at risk, but also where the process is creating avoidable work and financial leakage.

CMS's 2026 prior authorization requirements are increasing transparency around decision timeframes and denial reasons for applicable impacted payers, while the industry continues moving toward electronic prior authorization.

For medical practices, this makes 2026 an appropriate time to strengthen authorization measurement.

The objective is not simply to achieve a lower denial number.

It is to understand which authorization problems are costing the practice money, how much can be recovered, what is genuinely preventable, and where the workflow should change.

That is the difference between tracking denials and managing their financial impact.