Submitting secondary insurance claims can feel complicated, but it doesn't have to be. Here's the process simplified:
- Verify Insurance Details: Collect all active insurance cards, confirm coverage order using Coordination of Benefits (COB) rules, and ensure accurate payer sequencing.
- Obtain the Primary EOB: Wait for the primary insurer to process the claim and provide an Explanation of Benefits (EOB) or Electronic Remittance Advice (ERA). Double-check for accuracy.
- Prepare the Secondary Claim: Include the primary EOB, ensure all documentation is correct, and choose the appropriate submission method (electronic is preferred).
- Track and Follow Up: Monitor claim status, respond promptly to payer requests, and address any issues to avoid delays or denials.
Mistakes - like submitting without the primary EOB or using incorrect payer details - cause 15–20% of secondary claims to be rejected. By following these steps, you can reduce errors, save time, and ensure smoother reimbursements. Tools like Prospyr can simplify the process by automating tasks and organizing claim details efficiently.
4-Step Process for Submitting Secondary Insurance Claims
Step 1: Verify Patient Insurance Information and Coverage Order
Accurate verification of insurance details and coverage order at registration is key to avoiding claim denials.
Collect Complete Insurance Information
Always request all active insurance cards during each visit. Patients might unintentionally leave out details about a spouse's plan, retiree policies, or supplemental coverage like Medigap. Be sure to scan both sides of every card to capture critical payer contact information and coordination instructions. Ask specific questions such as, "Are you or your spouse currently employed?" or "Have you recently enrolled in Medicare?" Life events like retirement, marriage, divorce, or turning 65 can significantly impact coverage priorities.
Use real-time 270/271 transactions through payer portals like Availity or Navinet to confirm eligibility before filing claims. Keep a record of the payer representative’s name, the call reference number, and the timestamp to support any appeals if needed.
To simplify the process, consider using an all-in-one practice management platform like Prospyr (https://prospyrmed.com). These tools can streamline insurance data collection through integrated digital intake forms and real-time eligibility checks.
Once all necessary information is gathered, the next step is to apply coordination rules to determine the correct payer order.
Apply Coordination of Benefits Rules
After verifying the patient’s insurance details, apply Coordination of Benefits (COB) rules to establish the correct order of payment.
COB rules define which insurance plan is primary and which is secondary. A common guideline is the employee vs. dependent rule: the plan covering the patient as an employee or subscriber is primary, while a plan providing coverage as a dependent (e.g., through a spouse) is secondary.
For children covered under both parents’ employer plans, the birthday rule applies. Here, the plan of the parent whose birthday (month and day, not year) comes first in the calendar year is primary. If both parents share the same birthday, the plan that has been active the longest takes priority. In cases of divorce or separation, court orders or custody agreements override the birthday rule.
For Medicare beneficiaries aged 65 and older, an employer group health plan is primary only if the employer has 20 or more employees. For patients under 65 who qualify for Medicare due to disability, the employer plan is primary if the employer has at least 100 employees. Active employer coverage always takes precedence over COBRA or retiree plans. Additionally, Medicaid is always the payer of last resort, meaning it will only process claims after all other primary and secondary insurance options have been exhausted.
| Scenario | Primary Payer | Secondary Payer |
|---|---|---|
| Patient has own employer plan + spouse's plan | Patient's employer plan | Spouse's employer plan |
| Child covered by both parents (Birthday Rule) | Parent with earlier birthday | Parent with later birthday |
| Active worker (65+) + Medicare (Employer 20+ staff) | Employer Group Health Plan | Medicare |
| Retiree (65+) + Medicare (Employer < 20 staff) | Medicare | Retiree plan |
| Patient with private insurance + Medicaid | Private insurance | Medicaid (Payer of Last Resort) |
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Step 2: Obtain the Primary Payer's Explanation of Benefits
Once you've confirmed the patient's insurance details and Coordination of Benefits (COB) rules in Step 1, the next step is to secure the primary payer's Explanation of Benefits (EOB). This step is crucial - secondary claims should only be submitted after the primary claim has been finalized with a status of Paid, Denied, or Deductible. Submitting a secondary claim prematurely is one of the most frequent causes of immediate rejection.
"Submitting to secondary without first getting a primary EOB will result in a denial." – CheckpointEHR
The details from the primary EOB or Electronic Remittance Advice (ERA) form the basis for accurate secondary claim calculations. Without this information, secondary claim processing becomes error-prone.
Review the EOB for Accuracy
Once you receive the EOB, carefully review the details to ensure all information is correct. Start by verifying the adjudication date, which is the date the primary payer finalized the claim. Then, confirm that the allowed amount, paid amount, and any adjustments match the original charge.
Pay special attention to adjustment group codes and reason codes, as these indicate why certain amounts were adjusted. Common adjustment codes include:
- CO (Contractual Obligation): Used for adjustments due to contracted rates.
- PR (Patient Responsibility): Covers deductibles, coinsurance, or copays.
For instance, Reason Code 1 signifies a deductible, Code 2 refers to coinsurance, and Code 3 indicates a copay.
"If you see crossover indicator (e.g., MA18 on a Medicare remittance), do not resubmit to that secondary because this way you will be creating a duplicate." – Teagan Stewart, BellMedEx
If you notice any errors on the EOB - such as incorrect modifiers, an erroneous NPI, or unit miscounts - address these issues with the primary payer before moving forward with the secondary claim.
| Adjustment Group Code | Common Reason Codes | Description |
|---|---|---|
| PR (Patient Responsibility) | 1, 2, 3 | Deductible, Coinsurance, Copay |
| CO (Contractual Obligation) | 45 | Charge exceeds fee schedule/contracted rate |
| PR (Out-of-Network) | 242 | Primary claim denied as out-of-network |
Document Primary Payer Information
After confirming the accuracy of the EOB, document all processing details to support your secondary claim submission. Comprehensive documentation not only helps avoid claim denials but also speeds up reimbursements.
Be sure to record the Claim Control Number (also called the Internal Control Number or Payer Claim Number), which secondary payers often require to link claims. For paper submissions, this number is entered in Box 8 of the CMS-1500 form. For electronic submissions, include it in the appropriate COB segments, such as loops 2320/2430, on the 837P claim.
Additionally, document line-by-line payment details, as secondary payers need this breakdown to calculate their portion accurately. Record patient responsibility amounts for deductibles, coinsurance, and copays as well.
If your billing software supports ERA auto-population, enable this feature to streamline the entry of adjustment codes and payment details. For paper EOBs that cover multiple patients, remember to redact the names of other clients to comply with HIPAA privacy standards.
Using a practice management platform like Prospyr (https://prospyrmed.com) can make it easier to track EOB details and simplify the entire secondary claim submission process. This ensures that all critical information is organized and accessible when needed.
Step 3: Prepare and Submit the Secondary Claim
Once you've documented the primary EOB, it's time to prepare and submit the secondary claim. Keep in mind that errors in this step can be costly - about 15%–20% of secondary claims are rejected due to mistakes, which can disrupt your practice's cash flow.
Include All Required Documentation
The primary EOB/ERA is essential and must clearly outline the amount paid by the primary insurer, all adjustments, and the patient's remaining responsibility. For professional services, submit claims using the CMS-1500 form, while institutional services require the UB-04 (CMS-1450) form. If Medicare is the primary payer, additional forms like a Medicare Summary Notice (MSN) or a Medicare Secondary Payer (MSP) questionnaire (CMS-L564) may be needed to confirm coverage order.
Accuracy is critical here. Ensure each service line balances: Primary Paid + Contractual Adjustments (CO) + Patient Responsibility (PR) = Total Billed Amount. If the numbers don’t align, the claim will likely be rejected. For paper claims, make sure to use the original CMS-1500 forms printed in red "drop-out" ink to meet payer scanning requirements.
Once you've gathered and verified all required documents, it's time to choose the right submission method.
Select the Appropriate Submission Method
Before submitting, check if the primary payer automatically forwards the claim to the secondary payer. Look for Remark Code MA18 on the primary payer's Remittance Advice, which indicates the claim has already been forwarded. If this code appears, manual resubmission isn't necessary and could result in a duplicate claim.
For most cases, electronic submission is the best route. Use the HIPAA 837 transaction format - 837P for professional claims or 837I for institutional claims. This method is faster and less prone to errors.
"Electronic filing can speed up the process and reduce errors. Many insurers prefer electronic submissions." – AxisIRG
If you're unsure whether the secondary payer accepts electronic Coordination of Benefits (COB) data, your clearinghouse or practice management platform can help. Paper submissions should only be used when electronic options aren't available. Be mindful of the secondary payer's timely filing limits, which typically range from 90 to 180 days from the date on the primary EOB.
To simplify this process, consider using a practice management platform like Prospyr (https://prospyrmed.com). Tools like this can help you track submission methods for each payer, organize the required documents, and ensure claims are filed within the deadlines. This can save time and reduce the risk of errors, keeping your practice's revenue cycle running smoothly.
Step 4: Track and Follow Up on Submitted Claims
Once you've submitted your secondary claim, staying on top of its progress is critical to avoid delays and ensure smooth revenue management.
Monitor Claim Processing Status
To keep tabs on your claims, use your practice management software to filter for "Secondary Claims". This feature allows you to quickly identify any delays or issues specific to secondary billing. If your software supports Electronic Remittance Advice (ERA), enable it right away. Without ERA, your claims may only show as "Accepted", leaving you in the dark about final payment or denial updates.
Pay close attention to timeframes. If a claim sits in "Received" or "Accepted" status for more than 30 days, or if a "Pending" claim isn't resolved within a week, follow up with the payer immediately. Similarly, for claims marked "More Info Required", act within 10 business days to avoid further delays.
Using a comprehensive practice management system, like Prospyr (https://prospyrmed.com), can make this process easier by offering tools like real-time status updates and filtering options. Once you identify the claim status, take swift action to meet any payer requests.
Address Payer Requests Promptly
Effective tracking naturally leads to faster responses when payers request additional information. A common rejection message is "Secondary Claim Information Missing or Invalid." This typically means the primary payer's paid amount and adjustments don't match the total line charge. Double-check the primary Explanation of Benefits (EOB) to confirm all figures align before resubmitting.
If the payer requires the primary EOB, ensure you redact any unrelated patient information to remain HIPAA-compliant. Also, locate the "Payer Claim Number" on the primary EOB and include it in the "Claim Control No" field of your secondary claim. Missing this detail is a frequent reason for denials. Should a claim be denied, review the "Claim Details" or "Insurance Payment Reports" for specific Adjustment Reason Codes (e.g., Code 45 for contractual obligations) before resubmitting. Acting quickly on these requests helps you avoid running into the 90-to-180-day timely filing limits.
Conclusion
By following the checklist provided, each step in the process - like verifying benefits, often through digital intake forms, submitting required documentation, and tracking claims - can be handled with precision. Submitting secondary insurance claims doesn’t have to be overwhelming. Steps such as confirming Coordination of Benefits (COB), attaching the primary Explanation of Benefits (EOB), ensuring adjustment codes are accurate, and monitoring claim statuses can significantly reduce errors that lead to denials. It’s worth noting that 60% of healthcare companies encounter secondary claim errors, and 15–20% of these claims are rejected outright. These issues can result in longer Days in Accounts Receivable (AR), delayed reimbursements, and unnecessary stress for staff.
"Billing secondary insurance claims correctly is crucial for boosting reimbursements while reducing the possibility of refusal." - RCM Experts
The good news? You don’t need to manage this process manually. Practice management software tailored for aesthetics and wellness clinics can streamline these tasks. For example, Prospyr (https://prospyrmed.com) offers features that automate much of the process - like populating secondary claims using primary Payment Reports, tracking claim statuses in real time, and minimizing manual entry mistakes. When software takes care of repetitive tasks, such as extracting adjustment codes and verifying COB hierarchies, your team can focus on what matters most: patient care.
FAQs
What should I do if the primary payer hasn’t issued an EOB/ERA yet?
If the primary insurance hasn't issued an Explanation of Benefits (EOB) or Electronic Remittance Advice (ERA), hold off on submitting the secondary insurance claim. The EOB is crucial as it clarifies what the primary payer has covered or denied, helping ensure accurate billing for the secondary payer. Once you receive the EOB, make sure to include all necessary details from the primary claim to prevent processing delays or denials.
How do I determine which plan is primary when a patient has multiple coverages?
To figure out which insurance is primary, start by reviewing the patient’s insurance cards and asking about their coverage. Usually, the primary plan is the one offered through an employer or a government program like Medicare. It’s also a good idea to check the insurers’ coordination rules to be sure. Claims should always go to the primary insurer first. Once they’ve processed the claim, you can send it to the secondary insurer for additional coverage.
Why does my secondary claim reject even when I attach the primary EOB?
Secondary claims often face rejection when the primary Explanation of Benefits (EOB) is incomplete, incorrect, or delayed. Secondary payers rely on precise and timely EOB details to process claims effectively. Frequent problems include missing EOBs or errors in linking them properly. To minimize rejections, ensure the primary EOB is accurate, complete, and submitted on time.
