Every staffing question in a small practice reduces to the same operational one: how much of this can our people actually carry? For denial work, there is no public answer. Revenue-cycle measurement has been standardized with unusual care — HFMA maintains 29 industry-standard MAP Keys across five stages of the cycle,1 and a dedicated task force spent 2020 standardizing how denials themselves are counted.2None of it measures the person doing the work. A public appeals-per-FTE benchmark for small practices does not exist. That gap is this piece's finding — and the reason it builds a measurement framework instead of quoting a number no one can source.
291
industry-standard MAP Keys in HFMA's revenue-cycle KPI set — none measures staff productivity
62
denial metrics standardized by HFMA's Claim Integrity Task Force — all measure the claim, not the staff
0
public appeals-per-FTE benchmarks for small practices — the gap this piece treats as the finding
What the industry standardized — and what it didn't
The standardization that does exist is real and useful. Two MAP Keys address denials directly: AR-5, the remittance denial rate, and AR-6, denial write-offs as a percentage of net patient service revenue.1In 2020, HFMA convened a Claim Integrity Task Force of 18 industry leaders to go further, because practices were measuring denials in ways that couldn't be compared:
“We know that providers use metrics today, though we found that the lack of standard KPIs and definitions make it nearly impossible to compare results.”3
Chuck Alsdurf, HFMA director, professional practice — on the Claim Integrity Task Force, April 2021
Task force · volume + dollars
Initial denial rate
initially denied claims ÷ claims submitted
Task force
Primary denial rate
zero-pay remits ÷ primary-payer remits, trailing 4 weeks
MAP Key AR-6
Denial write-offs, % of NPSR
denial write-offs ÷ net patient service revenue
Task force
Time from denial to appeal
days, denial remittance → appeal submitted
Task force
Time from denial to resolution
days, denial remittance → zero balance
Task force · charges + volume
Initial denials overturned, %
overturned and paid ÷ initial denials
No standard exists
Appeals worked per FTE
Not among the 29 MAP Keys, not in the task force's six metrics, not published for small practices in any public source we could find. Every standardized metric measures the claim; none measures the person working it.
Metric definitions per the HFMA Claim Integrity Task Force report and MAP Keys AR-5/AR-6 (sources 1–3), abbreviated here.
Read the strip for what's absent. Rates, dollars, clocks — everything is defined at the level of the claim. Nothing defines denials worked per biller, hours per appeal, or denial staff per thousand claims. Proprietary survey products carry staffing data behind paywalls, but none publishes a small-practice appeals-per-FTE figure publicly. So when a vendor cites "industry standard" productivity for denial staff, there is no public standard behind the phrase.
The arithmetic of capacity
What can be built honestly is a capacity model, because the effort one denial consumes has been measured — in dollars. Premier's provider surveys put the cost of adjudicating one disputed claim at $43.84 (2022 activity) and $57.23 (2023 activity);45 MGMA puts the narrower unit — reworking one denied claim at the practice level — at $25.20.6 Divide by what the person doing the work earns — the BLS median for billing and posting clerks is $47,170 a year, $22.68 an hour7 — and each estimate implies a quantity of biller time:
Our derivation: survey cost per denial ÷ $22.68/hr (sources 4–7). The Premier figures include overhead and technology, not just wages, so treat the implied minutes as an upper band. The teal row is the one directly measured task time: a claim-status inquiry by phone consumes 25 minutes (2024 CAQH Index), and a worked denial usually needs more than one.
Those are the calibration points. The model below assembles them into a biller's month with every assumption on the table — change any line and the output moves linearly:
One biller's month, worked openly
defaults, not a benchmark
≈ 58 denials / month
86.7 hrs × 60 ÷ 90 min — about 2.7 per working day. A fully dedicated denial FTE doubles it (≈ 116).
at 60 min each
≈ 87 / mo
at 90 min each
≈ 58 / mo
at 120 min each
≈ 43 / mo
at 150 min each
≈ 35 / mo
Read the band, not the point estimate: a biller who can give denials half a week clears roughly 35 to 87 denials a month, depending on how deep each fight goes. Even the generous end is small — and the same staff pool is already taxed before the first denial is opened. The AMA's survey puts prior authorization alone at 13 hours per physician per week, roughly a third of an FTE per physician.8Denial capacity is what's left after that.
Where the bottleneck lives
Inside the per-denial minutes, the components are not equal. The clerical parts — pulling the remit, checking status, posting the outcome — are measured and bounded. The unbounded part is the composition hour: researching the denial reason and drafting an appeal whose medical-necessity argument holds up, which in a small practice pulls the clinician into the fight. That is the scarcest hour in the building, and it is the one no automation of phone calls returns.
Then comes the queue math. When monthly denial inflow exceeds worked capacity, the marginal denial isn't triaged loudly — it ages past the filing deadline and disappears into AR-6 as a write-off. That silent overflow is the mechanism behind the national pattern: across ACA marketplace plans, fewer than 1% of denied in-network claims are ever appealed.9 Capacity, not merit, decides which denials get fought.
What to instrument in your own shop
Absent a public benchmark, the useful move is to build a private one. The task force definitions give you denominators comparable to everyone else's; two local metrics — the ones nobody standardized — close the gap:
| Metric | Formula | Why it matters |
|---|---|---|
| Initial denial rate (volume + dollars) | initially denied claims ÷ claims submitted | Sizes the inflow your staff must absorb (source 2) |
| Denial write-offs, % of NPSR (AR-6) | denial write-offs ÷ net patient service revenue | Prices what giving up costs — where overflow is buried (sources 1, 2) |
| Initial denials overturned, % | overturned and paid ÷ initial denials appealed | Whether the fights you do pick are paying off (source 2) |
| Time from denial to appeal | days, denial remittance → appeal submitted | Queue latency against the filing deadline (source 2) |
| Minutes per worked denial (local) | time a sample — ten denials per quarter, end to end | The model's key input; no one will measure it for you |
| Denials worked per denial-FTE-month (local) | denials resolved ÷ (denial-hours ÷ 173) | Your appeals-per-FTE benchmark — the number this piece cannot give you |
First four per the HFMA definitions (sources 1–2), abbreviated. The two local metrics are ours: definitions to adopt, not standards to cite.
The capacity question also frames the outsourcing one. Practices that hand denial work to a billing company are buying someone else's appeals-per-FTE ratio — worth asking about directly; our guide to billing and RCM companies covers what to ask. And billing firms themselves, carrying this arithmetic multiplied across clients, are the audience for our partner program. Either way, the ratio exists whether or not anyone writes it down. The practices that measure it are the ones that get to change it.
Sources
- 1HFMA — MAP Keys: industry-standard revenue cycle KPIs (29 keys in five groups; AR-5 remittance denial rate; AR-6 denial write-offs as % of NPSR) · accessed July 2026
- 2HFMA Claim Integrity Task Force — Standardizing denial metrics for revenue cycle benchmarking and process improvement (six metric definitions) · 2020–2021
- 3HFMA — Claim Integrity Task Force seeks to standardize denial metrics (Alsdurf quote; 18-member task force) · Apr 16, 2021
- 4Premier — Trend Alert: providers spend $19.7B a year adjudicating with payers ($43.84 per claim, 2022 activity) · Mar 2024
- 5Premier — Claims adjudication costs providers $25.7B ($57.23 per claim, 2023 activity) · 2024–2025
- 6MGMA — cost to rework a denied claim (~$25.20) · series
- 7BLS Occupational Outlook Handbook — Financial Clerks: billing and posting clerks (median $47,170/yr ≈ $22.68/hr) · May 2024 wage data
- 8AMA — 2025 prior authorization physician survey (13 hours per physician-week of physician and staff time) · published 2026
- 9KFF — Claims denials and appeals in ACA marketplace plans (fewer than 1% of denied in-network claims appealed) · 2024 data
Related: the CAQH task-time record behind the 25-minute figure is dissected in The 25-Minute Phone Call, and the prior-authorization time tax in 13 Hours a Week.