Blog/ Hospital auditing
Hospital prospective audit: what it is and how it reduces denials
A prospective audit acts before the claim is sent to the payer, correcting inconsistencies while it is still possible to intervene. See how to structure this process and what it means for the revenue cycle.
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- Rivio, Editorial team
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A prospective audit is the review of hospital claims carried out before they are sent to the health plan. Its goal is to identify and correct inconsistencies while it is still possible to intervene: coding errors, documentation gaps, mismatches between diagnosis and the procedure billed. Each problem corrected at this stage is a denial that never happens.
Unlike a retrospective audit, which takes place after the patient’s discharge, and a concurrent audit, which happens during the hospital stay, a prospective audit acts at the claim closing and review stage, between discharge and submission. It is the last opportunity to make sure billing accurately reflects what was performed before it reaches the payer’s auditor.
What a hospital prospective audit is
A prospective audit is the type of claims review that acts preventively, before billing. The term refers to anticipation: the auditor reviews the claim with the same critical eye the payer’s auditor will apply on receiving it, identifying risk points before they become denials.
In practice, a prospective audit checks whether the claim information is complete, consistent and aligned with each payer’s contractual and regulatory rules. This includes compatibility between the recorded diagnosis and the procedures billed, the presence of supporting documentation for high-cost items, correct coding of procedures in the TUSS Table and compliance with the TISS Standard.
The difference between prospective and retrospective audits
Both types share the goal of protecting billing, but they act at different moments and with different intervention profiles.
| Criterion | Prospective audit | Retrospective audit |
|---|---|---|
| Timing | Before submission to the payer | After discharge, before submission |
| Type of intervention | Preventive — corrects before the denial | Corrective — disputes the denial after submission |
| Ability to correct | High — the claim has not yet been sent | Limited — depends on deadlines and protocol |
| Impact on cash flow | Speeds up payment | Recovers revenue already denied |
| Documentation requirements | Medical record still accessible and editable | Evidence may be incomplete |
A prospective audit has a structural advantage: when the claim has not yet been sent, any inconsistency can be corrected with no appeal deadline, no formal protocol and no negotiation with the payer. The cost of the correction is significantly lower than the cost of the appeal.
What a prospective audit checks
The prospective review covers the same points the payer’s auditor will check on receiving the claim.
Diagnosis-procedure compatibility
The ICD code recorded in the medical record must clinically support the procedures, tests and materials billed. Incompatibilities are a frequent cause of technical denials and are rarely reversed on appeal without new clinical documentation.
Procedure coding
Each procedure must be correctly coded in the TUSS Table, with the appropriate qualifiers and modifiers. Coding errors trigger automatic denials in payers’ systems before any human review.
Documentation of high‑cost items
OPME (implants and special materials), immunobiological medications and high-complexity procedures require specific documentation: prior authorization, a traceable invoice, clinical justification and compliance with the authorized protocol. The absence of any of these elements is direct grounds for a denial.
Daily rates and fees
The type of daily rate billed must match the care regimen recorded in the medical record. Changes of regimen during the hospital stay must be documented with a date and justification.
Compliance with the TISS Standard
The claim must be structured according to the standard in force, with all mandatory fields filled in and the XML files validated before submission.
How to structure the prospective audit process
An effective prospective audit depends on three conditions: access to medical record information when the claim is closed, clear prioritization criteria and defined responsibilities by type of hospital stay.
The starting point is closing the claim after discharge. That is when the auditor must have full access to the medical record, prescriptions, administration records and the list of procedures performed, to compare them with what was entered on the claim. Delays in closing reduce the time available for review and increase the risk of submitting with inconsistencies.
Prioritization by risk is the second structuring element. ICU stays, surgeries with OPME, cancer treatments and high-complexity procedures concentrate the highest billable value and the highest risk of denial. These cases should have a mandatory and more detailed prospective review. Lower-complexity medical admissions can have a faster review, focused on the highest-risk items for each payer.
The third element is standardizing review criteria by payer. Each health plan has specific contractual rules for coding, documentation and coverage limits. A checklist kept up to date for each payer reduces dependence on individual team members’ memory and ensures consistency in the review.
Prospective audit and technology
The volume of claims that need prospective review at mid-sized and large hospitals makes manual coverage of 100% of billed items unfeasible. Systems based on artificial intelligence expand this coverage by automatically checking consistency between the medical record and the claim, identifying coding errors and flagging items that require the auditor’s attention before submission.
Technology does not replace the auditor’s clinical judgment, but it eliminates the manual sweep of fields and codes, allowing the team to focus its effort on the most complex and highest-risk cases. The result is a prospective audit with broader coverage, shorter processing time and a lower denial rate on submitted billing.
Prospective audit in the hospital revenue cycle
The prospective audit is the stage of the hospital revenue cycle with the greatest potential for preventive impact. Each denial avoided at this stage represents not only preserved revenue but also appeal time saved, payment received sooner and the relationship with the payer preserved.
Hospitals that operate with a structured prospective audit have a first-pass rate (the share of claims approved without dispute on first submission) consistently higher than those that rely only on retrospective audits and denial appeals. Revenue that does not need to be recovered is always better than recovered revenue.
Rivio applies artificial intelligence to audit 100% of hospital claims before they are sent to the payer, automatically checking codes, documentation and compliance with each health plan’s rules, with oversight from billing specialists at every stage of the process.
Frequently asked questions about prospective audits
What is a hospital prospective audit?
A prospective audit is the review of hospital claims carried out before they are sent to the health plan. Its goal is to identify and correct inconsistencies — coding errors, documentation gaps, mismatches between diagnosis and procedure — before they generate denials.
What is the difference between a prospective and a retrospective audit?
A prospective audit takes place before the claim is sent to the payer, when it is still possible to correct inconsistencies without an appeal. A retrospective audit takes place after discharge, also before submission, but focuses on the final review of the claim. The two are complementary and are part of the billing control cycle, along with the concurrent audit, carried out during the hospital stay.
What does a prospective audit check?
The main points checked are: compatibility between diagnosis and the procedures billed, correct coding in the TUSS Table, documentation of high-cost items (OPME, special medications), daily rates and fees consistent with the care regimen and compliance with the TISS Standard in force.
Does a prospective audit reduce denials?
Yes. Because it acts before the claim is submitted, a prospective audit makes it possible to correct inconsistencies while it is still possible to intervene with no appeal deadline or formal protocol. Each problem identified at this stage is a denial that never happens, which reduces the volume of appeals and speeds up the payment cycle.
How does technology support prospective audits?
Systems based on artificial intelligence automate the checking of codes, mandatory fields and consistency between the medical record and the claim, expanding review coverage and flagging risk items before submission. The auditor focuses on the most complex cases, while technology ensures full coverage.
