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DENIAL GUIDES

Claim denials, explained and prevented

What each common denial means, how to fix a claim that was denied, and how to stop it happening again. Written by people who work US medical billing every day.

Timely filing A timely filing denial means the payer received the claim after its deadline for that date of service. Read the guide Duplicate claim A duplicate claim denial means the payer believes it already received, or already processed, a claim for the same patient, date of service and service. Read the guide Missing prior authorization A prior authorization denial means the payer required approval before the service and the claim did not carry a valid authorization: none was obtained, it had expired, or it did not cover the service, dates or number of visits billed. Read the guide Coverage and eligibility An eligibility denial means the payer could not match the patient to active coverage on the date of service: the plan had ended, the member ID or name did not match, or the service was billed to the wrong plan. Read the guide Medical necessity A medical necessity denial means the payer decided the service was not reasonable and necessary for the diagnosis and documentation on the claim, often because the diagnosis did not support the service or the payer’s coverage policy was not met. Read the guide Missing or invalid information A missing-information denial (or a front-end rejection) means a required field on the claim was empty or invalid: patient details, the billing or rendering provider’s number, the place of service, a referring provider or another required element. Read the guide Coordination of benefits A coordination of benefits denial means the payer believes another plan should pay first, or it needs updated information from the patient about other coverage before it will pay. Read the guide Bundling and included services A bundling denial means the payer considers the service part of another service billed for the same patient on the same day, so it pays only for the main service. Read the guide Non-covered service A non-covered denial means the patient’s plan does not include the service as a benefit at all, regardless of medical necessity, for example many cosmetic, screening or routine services under some plans. Read the guide Diagnosis coding and specificity A diagnosis coding denial means a diagnosis code on the claim was invalid for the date of service (for example, deleted in the yearly update), not coded to its full length, or did not support the service billed. Read the guide

PREVENTION

Most denials are preventable before the claim is sent

XEHR’s agents check coverage before the visit, check every claim before it leaves, track authorizations and read every denial to prepare the fix. Your billers approve and send.

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Common questions

What are the most common reasons claims are denied?

Eligibility and coverage problems, missing or invalid information, missing prior authorization, medical necessity, duplicate claims, timely filing, coordination of benefits, bundling and diagnosis coding. Most are preventable with checks before the claim is sent.

What is the difference between a rejected and a denied claim?

A rejected claim was not accepted for processing, usually because of missing or invalid data, and can be corrected and resubmitted. A denied claim was processed and the payer decided not to pay; it needs a correction or an appeal.

How can AI reduce claim denials?

AI agents can check eligibility before the visit, check each claim against required fields, coding and coverage rules before it is sent, track authorizations, and read denials to prepare the fix or appeal. In XEHR, people still approve every claim and appeal. How agentic AI works.

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