What is a healthy denial rate?
A healthy initial denial rate is under 5 percent of submitted claims, and denial write-offs are worth tracking as a share of net patient revenue, the metric HFMA lists as AR-6. Industry averages have climbed above 11 percent.
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Definition
The denial rate is the percentage of submitted claims that are denied by payers, either as an initial denial requiring rework or a final denial leading to write-off.
The detail
Denial rates have two layers that matter financially. Initial denial rate measures denials at first adjudication. Change Healthcare's Revenue Cycle Denials Index has reported initial denial rates above 11 percent in recent years, up from 9 percent five years prior. HFMA writes that “the industry average denial rate is between 5% and 10%, while less than 5% is optimal.” Final denial write-off rate is what you actually lose: high performers stay under 2 percent of net patient revenue. The gap between initial and final denial rates is your appeal effectiveness. Practices that do not work denials lose 100 percent of them. The 2024 CAQH Index reports that 12 percent of claims were denied in 2023 — a figure CAQH takes from Optum's Revenue Cycle Denials Index rather than measuring itself, and the closest thing the industry has to a published all-payer denial rate. In our own work the categories that dominate are eligibility, prior authorization, and missing or invalid information, and all three are front-desk workflow problems rather than billing back-end problems.
| Metric | High Performer | Industry Average |
|---|---|---|
| Initial denial rate | Under 5% | Above 11% (Change Healthcare Denials Index) |
| Final denial write-off rate | Under 2% of net patient revenue | Variable, often 3% – 5% |
| Appeal recovery rate (when worked) | 60% – 75% of denials recovered | Lower at practices that do not work denials |
The 2024 CAQH Index reports 12 percent of claims denied in 2023, citing Optum's Revenue Cycle Denials Index. The categories we see dominate — eligibility, prior authorization, missing/invalid information — are front-desk workflow problems, not billing back-end problems.
HFMA lists denial write-offs as a percentage of net patient service revenue (AR-6) among its standard metrics but publishes no public threshold for it; treat any figure you see quoted as a working target, not a standard. Our [denial code reference](/resources/denial-codes) maps the common CARC codes to the team that owns each fix.
Source: HFMA MAP Keys
Change Healthcare reported industry initial denial rates above 11 percent in recent index updates.
Source: Change Healthcare Denials Index
The 2024 CAQH Index reports 12 percent of claims were denied in 2023, citing Optum's Revenue Cycle Denials Index.
Source: 2024 CAQH Index
What this means for clinic owners
From Sorso
If you have not run a denial trend report by reason code in the last 90 days, you are losing money you do not know about. The fix is not technology, it is a 15-minute weekly review of denial reasons and assigning the top three to specific people with deadlines.
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What is a healthy days in AR?
Healthy days in AR is under 40 days for most outpatient practices. HFMA puts the ideal range at 30 to 40 days in its 7 KPIs guidance. Above that, the question is not whether something is wrong but which payer or workflow is causing it.
What is a good clean claim rate?
The widely cited target is a 98 percent clean claim rate on first submission — HFMA repeats it in its 7 KPIs guidance, attributing the figure to Becker's ASC Review. Most outpatient practices run below that, and every point of the gap is revenue sitting in rework rather than in the bank.
What is the average net collection rate?
HFMA writes that “at a minimum, a provider's net collection rate should be 95%, although 97% to 99% is optimal.” Below 95 percent, revenue is leaking somewhere specific and it is usually findable.
What is the average payer mix for outpatient clinics?
KFF puts US coverage in 2024 at 48.6 percent employer-sponsored, 20.5 percent Medicaid, 14.8 percent Medicare, 6.6 percent non-group and 8.2 percent uninsured. But your mix is set by your specialty, not by the country: CMS provider-level data for 2024 shows the median ophthalmologist collecting $167,145 from Medicare and the median OB-GYN collecting $6,554. Same programme, twenty-five times the exposure. Work out which of those two you are before you spend any time on fee-schedule news.
What is a healthy first-pass resolution rate?
A healthy first-pass resolution rate (FPRR) is 90 percent or higher, meaning at least 90 percent of claims are paid in full on first submission without rework or appeal. Industry median is 80 to 85 percent.
Why are claims denied?
Claims are most often denied for eligibility errors (40 percent of denials), missing prior authorization, coding errors, missing documentation, and timely filing failures, per CAQH and Change Healthcare data.
How do I appeal a denied claim?
Appeal a denied claim by reading the CARC and remark code, gathering supporting documentation, submitting a written appeal within the payer's deadline (typically 90 to 180 days), and escalating to second-level appeal or external review if needed. Successful appeal recovery typically runs 60 to 75 percent.
How do I improve my net collection rate?
Improve net collection rate by working denials promptly (60 to 75 percent recovery achievable), reconciling contractual underpayments, collecting patient AR at point of service, and tightening write-off authorization workflows. Most practices can recover 1 to 3 percentage points within 6 months.
How does prior authorization affect revenue?
Prior authorization causes 10 to 15 percent of denials and delays revenue by 7 to 30 days per affected service. Manual transactions cost providers materially more than electronic ones. The AMA reports physicians complete an average of 39 prior authorizations per week and spend about 13 hours per week on prior auth.
What are the most common billing errors in healthcare?
The most common healthcare billing errors are eligibility verification failures, missing prior authorization, incorrect or missing modifiers (especially modifier 25 and 59), upcoding/downcoding, missing documentation for medical necessity, and timely filing failures.
What are Place of Service (POS) codes in medical billing?
POS 11 means office, POS 19 is off-campus outpatient hospital, POS 20 is urgent care, POS 22 is on-campus outpatient hospital, POS 02/10 are telehealth. The wrong code changes Medicare reimbursement by 15 to 40 percent. Below: full 2026 CMS Place of Service code list with payment impact.
Why does my medical practice have cash flow problems even when we are profitable?
Profitable medical practices run out of cash because revenue and cash collection are separated by 30 to 90 days. Insurance reimbursement cycles, denials, patient responsibility growth, and timing mismatches between expenses (paid weekly or monthly) and collections (paid 30-90 days after service) create cash gaps even when the P&L looks healthy. The fix is a 13-week rolling cash flow forecast that maps expected collections against scheduled disbursements week by week.
What is the right ratio of front-desk staff to billing staff in an outpatient clinic?
Most well-run outpatient clinics staff one billing or revenue cycle FTE per roughly $1.5M to $3M in net collections, and one front-desk FTE per provider or per ~3,000 to 5,000 annual visits, depending on payer complexity and whether billing is in-house or outsourced. The right ratio is less about a fixed number and more about whether the team is actually closing the loop on scheduling, eligibility, point-of-service collection, and clean-claim submission.
Founder of Sorso and a CFA charterholder. Before Sorso, Stan spent 19 years in corporate finance at institutions including UniCredit and Société Générale — managing a $450M loan portfolio and making senior partner at a major mezzanine lender by 29 — then built a fractional CFO firm exclusively for outpatient healthcare clinics.
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