How do you determine the root cause of a denial instead of simply correcting and resubmitting the claim?

Finding the root cause of a denial means looking beyond the denial code and determining why the issue occurred in the first place.

The process should start with the payer’s denial information, including the ERA or EOB, claim adjustment reason codes, remark codes, payer messages, and any available claim status details. These provide the initial direction, but they should not always be treated as the complete explanation.

Next, review the entire claim and account history.

This may include:

• Patient eligibility on the date of service
• Primary and secondary insurance order
• Prior authorization or referral requirements
• Provider enrollment or network status
• CPT, HCPCS, ICD-10-CM, and modifier usage
• Place of service
• Units billed
• Dates of service
• Claim frequency or corrected-claim indicators
• Timely filing history
• Previous submissions and payer responses
• Documentation available in the medical record

The objective is to identify the source of the error.

For example, if a claim is denied for missing authorization, the immediate issue may appear to be authorization. But further review may show that authorization was actually obtained and the denial occurred because the wrong authorization number was submitted.

In another case, multiple claims may be denied for eligibility. The true root cause may be that the registration team is using outdated insurance information rather than an isolated claim error.

Root-cause analysis is especially important when the same denial appears repeatedly. If several claims from the same provider, payer, procedure, or location are affected, this may indicate a broader workflow problem.

Once the cause is confirmed, the appropriate resolution should be selected. That may include:

• Corrected claim submission
• Reconsideration
• Formal appeal
• Additional documentation
• Eligibility correction
• Authorization correction
• Coding review
• Provider enrollment correction
• Internal workflow improvement

A strong denial-management process also documents the root cause and communicates recurring issues to the responsible team so future denials can be prevented.

The goal is not only to recover one payment, but to reduce the chance that the same issue affects future claims.

Several claims for the same provider are denied as provider not eligible to perform the service.

Instead of correcting and resubmitting each claim individually, the AR team investigates the provider’s payer enrollment.

The review shows that the provider’s enrollment effective date was entered incorrectly in the billing system, causing claims before the correct effective date to be submitted under the wrong status.

The team corrects the underlying enrollment data, determines the appropriate action for the affected claims, and prevents new claims from being submitted with the same issue.