The Happy Billing Resource Center
Expert insights designed to help specialized practices stop chasing claims, eliminate denials, and maximize collections. We blend a global talent pool with Agentic AI to bring you the latest in Revenue Cycle Management.
Mastering POS 21 in Medical Billing
POS 21 in medical billing designates Inpatient Hospital services for patients who are formally admitted, usually for an overnight stay or longer. […]
Read More Optimize Medical Billing for Mental Health Practices
Medical billing for mental health is a specialized revenue process built around time-based CPT codes, strict authorization controls, and narrative documentation that […]
Read More Master Revenue Cycle Management for Physician Practices
Cash flow problems in physician practices usually start long before a claim hits the clearinghouse. They start at registration, scheduling, coding, and […]
Read More Mastering United Healthcare Timely Filing Limits in 2026
For most in-network providers, UnitedHealthcare’s standard timely filing limit is 90 days from the date of service, a deadline that requires strict […]
Read More Knee Arthroscopy CPT Code: The Definitive Billing Guide
Monday morning, an arthroscopy claim that looked clean on Friday is now in denial. The op note supports a meniscectomy and work […]
Read More Accounts Receivable in Medical Billing: A 2026 Guide
If your Days in A/R is over 50 days, your cash flow is already under strain. Accounts receivable (A/R) in medical billing […]
Read More Occipital Block CPT Code 2026 Mastery Guide
CPT 64405 is the occipital block CPT code for a greater occipital nerve block. Accurate billing doesn’t stop there. You also need […]
Read More PR 26 Denial Code: Your Guide to Fixing & Preventing It
You’re probably looking at PR 26 denials after the visit is done, the claim is out, and your team is already chasing […]
Read More Mastering Coordination of Benefits in Medical Billing
A COB denial usually means your claim hit the wrong payer sequence, not that the service was coded incorrectly. If your team […]
Read More What Is RCM in Medical Billing & Why It Matters
Revenue Cycle Management, or RCM, in medical billing is the full financial process that tracks a patient account from registration through coding, […]
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