CARC A5 Active

PR-A5: Medicare PPS Capital Cost Outlier Amount

TL;DR

This is the Medicare PPS capital cost outlier amount for a high-cost inpatient case. Verify the outlier calculation is correct based on your charges and cost-to-charge ratio. Appeal through Medicare redetermination if the amount is incorrect.

Action
Review & Decide
Who Pays
Patient
Appeal
No
Patient Impact
Direct Financial
Disclaimer
This content is for informational purposes only and does not constitute professional billing advice. Always verify information against your payer contracts and current coding guidelines. Consult a certified billing specialist for specific claim issues.

What Does PR-A5 Mean?

CARC A5 represents the Medicare Prospective Payment System (PPS) capital cost outlier amount. Under Medicare's inpatient PPS, hospitals receive a fixed DRG-based payment that includes a capital component. When a case's capital-related costs significantly exceed the standard capital payment, Medicare may provide an additional outlier payment to partially compensate for the extraordinary costs.

The capital cost outlier is calculated using the hospital's capital-related charges, its cost-to-charge ratio from the most recent cost report, and the fixed-loss capital outlier threshold. Cases that exceed this threshold qualify for additional payment. CARC A5 reports this outlier amount on the remittance.

This is a payment calculation code, not a denial. The amount shown reflects Medicare's determination of the capital cost outlier payment. If the calculation appears incorrect — for example, if charges were not fully captured or the wrong cost-to-charge ratio was applied — the provider can appeal through the Medicare redetermination process.

How to Resolve

Verify the capital cost outlier calculation and appeal through Medicare redetermination if incorrect.

  1. Review the Medicare remittance Examine the remittance advice for the PPS capital cost outlier amount and any accompanying remark codes.
  2. Compare with expected capital payment Calculate the expected capital outlier payment based on your facility's charges and cost-to-charge ratio.
  3. Verify charges and ratios Confirm all capital-related charges were captured on the claim and the correct cost-to-charge ratio is being applied.
  4. Contact the MAC for explanation If the outlier amount appears incorrect, request a detailed payment explanation from the Medicare Administrative Contractor.
  5. Ensure accurate charge capture Verify the claim accurately reflects all capital-related costs incurred during the inpatient stay.
Do Not Appeal This Code

Medicare PPS Capital Cost Outlier Amount grouped under PR places the financial responsibility on the patient. The specific reason depends on the context of this adjustment — review any accompanying RARC codes for detail. Because this represents a placement of responsibility rather than a coverage denial, an appeal isn't the right action; verify the placement is correct before billing the patient.

Also Filed As

The same CARC A5 may appear with different Group Codes:

CO-A5 OA-A5

Related Denial Codes

PR-13 — Date of Death Precedes Date of Service PR-14 — Date of Birth Follows Date of Service PR-19 — Workers' Compensation Claim PR-20 — Liability Carrier Responsible PR-21 — No-Fault Carrier Responsible

Sources

  1. https://x12.org/codes/claim-adjustment-reason-codes
  2. https://www.cms.gov/medicare/payment/prospective-payment-systems/acute-inpatient-pps
  3. Codes maintained by X12. Visit x12.org for official definitions.