CO-74: Indirect Medical Education Adjustment

What Does CO-74 Mean?

With CO (Contractual Obligation), the CARC 74 adjustment for indirect medical education adjustment is a contractual reduction. The provider absorbs this amount per the payer contract or regulatory payment methodology. The patient is not responsible for the adjusted amount. Review the remittance to confirm the adjustment is consistent with your contract terms.

CARC 74 means the payer adjusted the payment based on indirect medical education adjustment. The reimbursement was calculated using the payer's fee schedule, contracted rate, or regulatory payment methodology rather than the billed charge.

Common scenarios that trigger this adjustment include: teaching hospitals receive an IME add-on payment as part of Medicare's inpatient PPS. CARC 74 reflects the adjustment between billed charges and the IME-adjusted payment amount, which is a normal part of the Medicare payment calculation; The hospital's reported intern-and-resident-to-bed (IRB) ratio used in the IME calculation was inaccurate, resulting in a different adjustment amount than expected; Required documentation supporting the hospital's teaching status, resident counts, or accreditation was not submitted or was incomplete, leading to an incorrect IME adjustment. The group code paired with CARC 74 determines who bears the financial responsibility — CO places it on the provider as a contractual obligation, OA indicates a coordination of benefits or other payer adjustment, PR shifts it to the patient.

Common Causes

How to Resolve

1. Review the adjustment against contract terms Compare the CO-74 adjustment with your payer contract to confirm the reduction is consistent with agreed terms or regulatory methodology.
2. Verify the adjustment amount Confirm the dollar amount of the adjustment is calculated correctly based on the contracted rate and the service provided.
3. Appeal if the adjustment is incorrect Appeal only if the allowed amount does not match your contracted rate. Include your signed contract showing the agreed-upon rate for the billed procedure code. If the fee schedule was applied incorrectly, provide evidence of the correct rate. For Medicare, file within 120 days.
4. Process the contractual adjustment If the adjustment is correct per contract terms, process it accordingly in your billing system. This amount cannot be transferred to the patient.

Common RARC Pairings

The RARC code tells you exactly what triggered the CO-74:

How to Prevent CO-74

• Maintain accurate and current intern-and-resident-to-bed ratio data and submit updates to CMS promptly when residency program counts change
• Ensure teaching hospital accreditation and residency program documentation is complete and readily available for payer audits
• Conduct regular coding audits focused on DRG assignment accuracy, since DRG weight directly impacts IME payment calculations
• Train billing staff on IME payment methodology so they can identify and reconcile expected versus actual adjustment amounts
• Monitor annual CMS updates to the IME adjustment formula and incorporate changes into revenue cycle projections

Also Filed As

The same CARC 74 may appear with different Group Codes:

Related Denial Codes