CO-200: Expenses Incurred During Lapse in Coverage

What Does CO-200 Mean?

CO-200 indicates the payer is denying the claim because coverage was not active on the service date. However, this does not necessarily mean the patient is uninsured — it may mean the claim was submitted with incorrect insurance information. The provider should verify whether the patient had coverage under a different policy or payer before writing off or transferring the balance.

CARC 200 appears when the payer determines that the patient did not have active insurance coverage on the date(s) of service. The claim is denied not because of any clinical, coding, or administrative issue — but because the patient was simply not covered by the plan when the service was delivered. The payer has no obligation to pay for services rendered during a coverage lapse.

The most common trigger is premium non-payment. The patient (or their employer) stopped paying premiums, and the coverage terminated before the service date. Other triggers include job loss without COBRA election, the gap between losing one plan and starting another, waiting periods on new coverage, or retroactive termination where the payer discovers the coverage ended earlier than originally recorded. In some cases, the issue is not a true coverage lapse but rather outdated insurance information on the claim — the patient has active coverage under a different policy number or payer.

The financial impact depends on the group code and the actual coverage status. Under CO, the payer is denying the claim but the provider should first verify whether the patient had coverage elsewhere before accepting the denial. Under PR, the patient bears direct financial responsibility because their coverage genuinely lapsed. Providers who encounter CARC 200 regularly should strengthen their pre-service eligibility verification processes to catch coverage gaps before services are rendered.

Common Causes

How to Resolve

Verify the patient's actual coverage status, identify alternative coverage if available, and bill the patient if no coverage existed.

1. Verify coverage status Run an eligibility check to confirm the coverage lapse. Contact the payer if the termination date seems inconsistent with your records.
2. Check for updated insurance information Contact the patient to ask if they have current or alternative coverage. Collect updated insurance credentials if a new plan is in effect.
3. Resubmit to the correct payer If the patient has active coverage with a different payer or under a different policy, resubmit the claim to the correct entity.
4. Transition to self-pay if truly uninsured If no active coverage exists, apply your self-pay policy. Offer the patient financial assistance applications (charity care, Medicaid, marketplace enrollment) if eligible.

Common RARC Pairings

The RARC code tells you exactly what triggered the CO-200:

How to Prevent CO-200

• Run real-time eligibility verification at scheduling and again at check-in — do not rely solely on the insurance card the patient presents
• Implement automated batch eligibility checks 48-72 hours before scheduled appointments to catch coverage changes
• Flag patients whose eligibility check returns inactive or pending coverage and resolve the issue before rendering services
• Collect updated insurance information at every visit, not just during annual registration updates

General Prevention

• Run real-time insurance eligibility verification at scheduling and again at check-in for every patient encounter
• Flag patients whose coverage shows as inactive or pending termination before delivering services
• Collect updated insurance information from patients at every visit, especially for those with recent employment or life changes
• Implement automated eligibility batch checks for scheduled patients 48-72 hours before their appointment
• Educate patients on the importance of maintaining active coverage and the consequences of premium non-payment
• Develop a workflow for verifying COBRA or transitional coverage for patients who recently changed jobs or insurance plans

Also Filed As

The same CARC 200 may appear with different Group Codes:

Related Denial Codes