Lesson · 20 min

Revenue Cycle Management & Clinical Preauthorization

Dive deeper into revenue cycle management and learn how clinical preauthorization protects both patients and providers.

By the end of this lesson you can

Describe the three phases of the revenue cycle
Explain what prior authorization is and when it is required
Distinguish eligibility, authorization, and medical necessity
Describe what happens when authorization is missed

📘 Reading Lesson

Lesson Notes

Read through the key concepts before you try the challenge.

Approval before the service, not after

On the job

You work patient access at a clinic.

A patient is scheduled for an imaging study. Their plan requires approval in advance. Nobody requests it. The study is performed, the claim is submitted, and the payer denies it — correctly, because the terms of the plan were not met. The practice has performed a real service and has no way to be paid for it.

Your task: Learn what must be obtained before a service, and what happens when it is not.

Prior authorization is a payer's advance approval for a specific service, for a specific patient, usually within a specific window. It exists because payers want to review certain expensive or elective services before committing to pay for them. Whether you agree with the practice or not, it is a contractual term, and a service delivered without it is generally not payable.

Check	Answers	When
Eligibility	Is this patient's coverage active, and are we in network?	At scheduling and again at check-in
Prior authorization	Has the payer approved this specific service in advance?	Before the service is delivered
Medical necessity	Does the documentation support that this service was appropriate?	Judged when the claim is adjudicated

Three checks that are frequently confused

These three are independent. A service can be eligible, authorized, and still denied for medical necessity if the documentation does not support it. Confirming one tells you nothing about the other two, and a verification response saying coverage is active is explicitly not a guarantee of payment — payers state this in the response itself.

When authorization is missed, the options are limited. Some payers permit a retroactive request within a short window, usually with a clinical justification. Otherwise the claim is appealed, written off, or — where the payer contract permits and the patient was properly notified in advance — billed to the patient. Preventing it is far cheaper than any of these.

Revenue Cycle Management (RCM) Deep Dive

Revenue Cycle Management is the financial process healthcare organizations use to track patient care episodes from registration to final payment. Effective RCM minimizes claim denials and maximizes reimbursement.

Patient access (registration, eligibility, benefits verification)
Health information management (coding, documentation)
Patient financial services (billing, collections)
Claims management (submission, follow-up, appeals)

Clinical Preauthorization

Preauthorization (also called prior authorization) is the process of getting insurance approval before a patient receives certain procedures, medications, or specialist referrals.

Skipping preauthorization when it is required can result in a denied claim — meaning the provider may not get paid and the patient could be billed unexpectedly.

Challenge

Apply what you've learned in this lesson.

Check your understanding

What is the primary purpose of clinical preauthorization?

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Medical Coding Overview: ICD Part 1 →