Quick Explanation
Denial code CO-68 indicates an adjustment or denial related to a "day outlier amount," which occurs when an inpatient hospital stay exceeds the standard length-of-stay threshold (trim point) defined for the assigned Diagnosis-Related Group (DRG). Payers use this code to indicate that the additional payment requested for the extended inpatient days has been adjusted or denied, typically because the clinical documentation did not justify the medical necessity of the extended stay. It signifies that the patient's continued hospitalization beyond the standard DRG days was deemed medically unnecessary or was poorly documented.
Common Causes for CO-68
Denials with code CO-68 typically happen for the following specific reasons:
- The clinical documentation failed to demonstrate the medical necessity of the inpatient stay beyond the standard DRG length-of-stay threshold.
- Inpatient progress notes, physician orders, or therapy logs did not show active, acute-level treatment during the outlier days.
- Errors in documenting or reporting the correct admission, discharge, or leave-of-absence dates, causing an incorrect calculation of the total inpatient days.
- Failure of the hospital's utilization review (UR) department to obtain timely authorization or concurrent review approval for the extended stay.
How to Prevent CO-68 Denials
To avoid receiving this denial in the future, implement these specific checks:
- Conduct daily concurrent utilization reviews to monitor inpatient stays against DRG trim points and ensure medical necessity is documented in real time.
- Educate clinicians on the importance of detailing acute care interventions, daily plan of care updates, and barrier-to-discharge notes in the medical record.
- Perform comprehensive pre-billing audits to verify that admission dates, discharge dates, and patient status codes are completely accurate.
- Establish clear communication protocols between case management and providers to promptly address discharge planning and avoid unnecessary clinical delays.
Appeal Letter Template for CO-68
If you believe this claim was denied incorrectly, you can use the following template to submit an appeal.
[Your Practice Header]
[Date]
[Payer Name]
[Appeals Department Address]
RE: Appeal for Claim [Claim Number]
Patient: [Patient Name]
ID: [Patient ID]
Date of Service: [Date]
Denial Code: CO-68 - Day outlier amount
Dear Appeals Department,
I am writing to appeal the denial of the above-referenced claim, which was denied with code CO-68: "Day outlier amount".
We are appealing the adjustment/denial under code CO-68 (Day outlier amount) for the inpatient stay of the patient. According to CMS Medicare Claims Processing Guidelines (Chapter 3, Section 20.1) and prospective payment system (PPS) regulations, day outlier payments are justified when the severity of the patient's illness and required clinical interventions dictate a length of stay exceeding the established DRG threshold. In this case, the patient’s extended hospitalization was clinically necessary due to documented medical complexities, including [insert specific clinical conditions or complications], which required continuous acute-level monitoring and treatment. The attached medical records, including daily physician progress notes and medication administration records, clearly demonstrate that the patient could not have been safely discharged sooner. We request a review of the clinical documentation and full payment of the day outlier amount.
Attached please find:
1. A copy of the original claim.
2. The relevant medical records supporting the service.
3. [Any other supporting documents].
We respectfully request that you reprocess this claim for payment.
Sincerely,
[Your Name]
[Title]
[Practice Name]
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