APR-DRG Pricing: How Patient Classification Drives Reimbursement

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When two patients are admitted to the same facility with the same primary diagnosis, their recovery processes can still be vastly different. With differing severities and complexities, one patient may recover in days, while another takes weeks to emerge from intensive care. From a reimbursement perspective, we should treat these cases as differently as they function. That’s what APR DRG Pricing was created to accomplish. APR-DRGs serve to accurately reflect the complexity of care and resource use for Medicaid programs.

❓ What’s APR-DRG Pricing?

“APR DRGS”, or All Patient Refined Diagnosis Related Groups, are a way of classifying patients by clinical complexity, illness severity, and mortality risk. These assignments, combined with relative weights, allow us to calculate an accurate reimbursement for services provided. Hospital reimbursement must accurately reflect patient complexity. This means a reimbursement model that reflects the realities of the case, not just the initial diagnosis. The process of turning a patient's clinical data into a reimbursement amount is as follows:

• The patient is assigned to a diagnosis-related group

• Additional codes are assigned to reflect the case's severity

• A relative weight is applied to the group to reflect the patient's clinical complexity

• A final amount is calculated against a base rate.

This system is used for Medicaid reimbursement across the US, as well as by other commercial payers. It's similar to but distinct from the MS-DRG system, which is used primarily by Medicare, not Medicaid. APR DRGs introduce these additional dimensions:

• SOI - Severity of Illness is measured on a 1-4 scale, ranging from minor, moderate, major, and extreme. This reflects the amount that a diagnosis impacts the patient.

• ROM - Risk of Mortality is another 1-4 scale that indicates the likelihood that the patient's condition is fatal.
  

These additions make APR-DRGs pricing highly specific. For the same basic DRG, patients classified at a 4 will be assigned a higher relative weight, and thus higher payment, than a patient classified at a 1. Complex patients with higher ROM and SOI mean higher reimbursements. 🧠 How does the Patient Classification System Work? Patient classification is a multi-step system in an already complex revenue cycle. If one step is off base, the rest of the process is impacted, having consequences for the eventual payment. Here is how the process typically functions:

1. Diagnosis and Procedure Coding: Clinical reviewers assign ICD-10 CM diagnostics and ICD-10 PCS procedure codes. The principal diagnosis drives the DRG's assignment.

2. APR- DRG grouping: The claim is processed, and the patient is given an APR-DRG assignment based on principal diagnosis, secondary diagnoses, procedures, age, and discharge status. Accurate clinical details are essential at this step.

3. SOI + ROM assignment: With the DRG selected, the individual processing claims can now look at other factors like secondary diagnoses to assign severity of illness and risk of mortality. This follows defined logic about which diagnoses are clinically significant enough to elevate severity.

4. Relative Weight: Severity of Illness and Diagnosis-Related Groups help coders find the relative weight of the case. This means understanding how many resources were used compared to the average case.
   

After the basic calculation has been completed, revenue cycle workers may factor in transfer adjustments, length of stay, outlier payments, stop-loss provisions, and payer-specific contract terms. Factoring this in ensures hospitals receive fair payment. 🎯 Why does Pricing Accuracy Depend on APR-DRGs Groupings?

As you can see, the calculation is a complex chain. If one portion of the coding is off, the final calculation can be vastly affected. Undercoded diagnoses lead to lower SOI assignments, which lead to lower relative weight. Each aspect of the chain has the potential to impact the next. Grouping and coding logic changes also regularly, requiring healthcare organizations to stay up to date at risk of losing revenue. If outdated logic is used in one place, the rest of the chain can be impacted. Potential reimbursement failures for APR-DRGs: The revenue cycle is, unfortunately, full of potential pitfalls. Consider these additional ways that reimbursement can lose accuracy:

• Incomplete clinical documentation: if the clinician doesn't initially document a secondary or tertiary diagnosis, they can't impact SOI. APR-DRG documentation must be accurate from the very beginning.

• Undercoding in secondary diagnoses: If the software doesn't leave space to include each diagnosis, reimbursement can suffer.

• Incorrect discharge status: Discharge status codes, indicating if the patient was transferred and where they went after discharge, can also impact accuracy.

• Outdated Grouping Logic: As we've mentioned, grouper logic is updated regularly. Organizations that fail to keep up with rapidly changing systems risk revenue loss.

Grouping logic may be the most vital element to track, as inaccurate logic can impact an entire hospital, not just a single case. When incorrect grouping logic is shared with another healthcare provider that is using the current version, there's no way for that provider to know that a different version is being used. Claims will still get paid, just at incorrect amounts, meaning that these inaccuracies can easily go undetected. 🧰 The Role of Pricer Systems In Patient Refined Diagnosis-Related Groups

At the massive scale that healthcare organizations operate, manual calculation just isn't reasonable. That's why many organizations are now turning to pricing software. This software has to support detailed, accurate pricing every step of the way, turning clinical reality into accurate reimbursement. When hospitals process thousands of cases per year, they simply can't afford to discover inaccuracies or out-of-date logic retrospectively! Micro-Dyn's APR-DRG tools help you stay accurate, allowing for compliant coding with room for every level of complexity. When your organization has the right infrastructure, APR-DRG assignment doesn't need to be an opportunity for revenue to get lost. Micro-Dyn helps coding professionals thoroughly document and process claims data for accurate reimbursements, every time. Ready to see how Micro-Dyn’s APR DRG grouping and pricing tools can strengthen your revenue cycle? Request a trial today.