# White Papers > Free white papers and calculators from WeBill Health on denial root causes and Medicare credentialing gaps, written by the people who work your claims. Source: https://webillhealth.com/white-papers/ Publisher: WeBill Health Last updated: October 25, 2026 Resources ## Revenue defense white papers Practical guides written by the people who work your claims every day, on the problems that cost independent practices the most. [Get the Denial Root Cause Playbook](/denial-root-cause-playbook/)Browse the library ## The library Each one answers a single problem that costs independent practices real money. * White paper, free download The Denial Root Cause Playbook How to find the three denial patterns carrying most of your denied dollars, and how to close them at the source. Five pages, written for the person who has to fix it. [Send me the playbook](/denial-root-cause-playbook/) * White paper, free to read The CY2027 Medicare Fee Schedule What the proposed 2027 rule does to your conversion factor, modifier 25 visits and G2211, which specialties gain and lose, and the checklist to finish before January 1. [Read the paper](/cy2027-medicare-fee-schedule/) * White paper, free to read 2026 Claim Denial Benchmarks The latest national denial data, the physician practice benchmark, the causes behind most denials and how to measure your own rate so the comparison means something. [Read the paper](/2026-denial-benchmarks/) * White paper, free download Switching Billing Partners Without a Cash Flow Dip The contract clauses, the data to demand, the enrollments that take longer than anyone admits, and a cutover plan that keeps money moving. [Send me the switching guide](/switching-billing-partners-guide/) * White paper, free download Telehealth Billing Rules for 2026 and 2027 POS and modifiers payer by payer, audio only visits, parity, cross state care and the dates that change everything in 2028. [Send me the telehealth guide](/telehealth-billing-rules-guide/) * White paper, free download The Credentialing Gap What a new provider’s first 90 days cost when enrollment runs late, the Medicare and state rules that set the effective date, and a 120 day onboarding plan. [Send me the credentialing paper](/white-papers/credentialing-gap/) * White paper, free download The Prior Authorization Rulebook 2026 to 2027 The federal deadlines now in force, state gold card laws, which rule applies to which patient, and the front desk routine that prevents authorization denials. [Send me the prior authorization rulebook](/white-papers/prior-authorization-rulebook/) * White paper, free download The Front Desk Revenue Standard 2026 The front desk errors that become denials, what to read on every eligibility response, four federal rules, and a twelve step routine with a daily scorecard. [Send me the front desk standard](/white-papers/front-desk-revenue-standard/) * Calculator The Credentialing Gap Medicare only lets you bill back 30 days from your effective date. Enter your real dates and see which visits are recoverable and which are already lost. [Work out my credentialing gap](/credentialing-gap/) ## Want these answers for your own practice? Send four fields. We review your accounts receivable and show you where your revenue is leaking, whether or not you ever become a client. [Not ready? Get your Revenue Defense Score in 60 seconds](/revenue-defense-score/)[Read the Denial Root Cause Playbook](/denial-root-cause-playbook/)[See exactly what happens after you send this](/how-it-works/) WeBill Health is a specialty focused revenue cycle management partner for independent practices. Request a Revenue Defense Audit at https://webillhealth.com/form/