Best Medical Billing

Billing

Medical Billing: How the Process Actually Works

The end-to-end process, from patient registration to the last posted payment.

Medical billing is the sequence of steps that turns a clinical encounter into money in a practice's bank account. It starts before the patient arrives — with eligibility verification and benefit checks — and it does not end when the claim goes out the door. Somebody has to post the remittance, reconcile the contractual adjustment, chase the underpayment, and bill the patient for whatever the plan left behind.

Most practices lose revenue in the gaps between those steps rather than in any single one of them. A front desk that captures a subscriber ID incorrectly creates a denial three weeks later. A charge that never leaves the EHR becomes a claim that no one submits until the payer's timely filing window has closed. A payment posted without reading the adjustment codes hides a systematic underpayment that repeats on every claim under the same contract.

This section covers the mechanics in plain language: what each step is for, who owns it, what typically breaks, and how to tell whether your process is working. It is written for practice managers, billers, and physicians who need to understand where their revenue is stuck — not for software vendors.

Alongside the process itself, you will find the financial side of running a billing operation: days in A/R, clean claim rate, net collection rate, cost to collect, and how to read those numbers without fooling yourself. There is also a growing body of work on billing technology — clearinghouse rules engines, automated eligibility, and the AI tools that now handle coding suggestions and denial triage — plus telehealth, which has its own place-of-service and modifier rules that keep changing.

Explore this section

Frequently asked questions

What are the main steps in the medical billing process?
Patient registration and eligibility verification, charge capture and coding, claim scrubbing and submission, payer adjudication, payment posting and reconciliation, denial and A/R follow-up, and finally patient billing and collections.
How long should it take to get paid on a clean claim?
Electronic claims to most commercial payers and Medicare adjudicate in 14 to 30 days. If your average days in A/R sits above 40, the problem is usually front-end data quality or a submission backlog rather than payer speed.
What is a good clean claim rate?
Practices with disciplined front-end processes submit 95% or more of claims without a rejection or denial on first pass. Below 90% means edits are being caught by the payer instead of by your scrubber.
Should a small practice bill in-house or outsource?
It depends on volume, specialty complexity, and whether you can keep a trained biller busy. Outsourcing usually costs 4 to 8 percent of collections; in-house costs salary plus software plus turnover risk. Compare on net collection rate, not on fee alone.
How often do billing rules change?
Coding sets update annually (CPT in January, ICD-10-CM in October), while payer policies, fee schedules, and prior authorization lists change throughout the year. Reviewing payer bulletins quarterly is the practical minimum.

Keep reading on billing

Every article in this section is written for the person who actually works the claim — process walkthroughs, A/R metrics, and payer-specific gotchas.

Browse all articles