Keystone Mercy Health Plan (now Keystone First) Claims: Mailing Address, P.O. Box 7115 London KY 40742, & Filing Deadlines

Navigating the complexities of medical billing for managed care organizations can be a daunting task, but understanding the precise requirements for Keystone First claims address and submission is paramount for efficient revenue cycle management. As a leading Medicaid managed care plan in Southeastern Pennsylvania, Keystone First (formerly Keystone Mercy Health Plan) serves a vast population, making accurate and timely claim submission critical for healthcare providers. This comprehensive guide will equip your billing team with the authoritative insights needed to master Keystone First’s billing protocols, from the correct mailing addresses to the intricate appeals process.

We understand that every detail matters when it comes to getting paid. From ensuring your electronic claims are clean to understanding the nuances of a paper submission to P.O. Box 7115 London KY 40742, this resource is designed to be your definitive expert companion.

Quick Reference Guide

For immediate access to essential Keystone First billing information, consult this quick reference table. This table summarizes critical details for both electronic and paper claim submissions, ensuring your team has the core data at their fingertips.

Category	Detail	Notes
Primary Claims Mailing Address (Professional)	Keystone First P.O. Box 7115 London, KY 40742-7115	For CMS-1500 claims (physician, professional services). This is the primary keystone first claims address.
Primary Claims Mailing Address (Institutional)	Keystone First P.O. Box 7182 London, KY 40742-7182	For UB-04 claims (hospital, facility services). Note the different P.O. Box.
Appeals Mailing Address	Keystone First P.O. Box 7186 London, KY 40742-7186	For submitting provider appeals for denied claims. Clearly mark “Appeal” on the envelope.
Timely Filing Limit (Standard)	180 calendar days from the date of service	Strict adherence is required. Exceptions are rare and require robust documentation. This is the crucial keystone timely filing limit.
Electronic Claim Submission (EDI)	Payer ID: 22176	Via clearinghouses like Availity, Change Healthcare, or other HIPAA-compliant EDI vendors. Preferred method for faster processing.
Provider Services Contact	1-800-521-6007	For general inquiries, eligibility verification, and provider support.
EDI Support Contact	1-800-521-6007 (select EDI option)	For technical assistance with electronic claim submission.
Website for Providers	keystonefirst.com/providers	Access to provider manuals, forms, and online tools.

Detailed Breakdown

Understanding the nuances of Keystone First billing goes beyond just knowing an address. It requires a deep dive into submission methods, specific claim types, and the critical importance of timely filing. Let’s dissect each component to ensure your practice operates with maximum efficiency and compliance.

Mastering the Keystone First Claims Address: Professional vs. Institutional

The first and most critical distinction in submitting claims to Keystone First is identifying whether your services are professional or institutional. This dictates not only the form you use but also the specific mailing address.

Professional Claims (CMS-1500)

Professional claims cover services rendered by physicians, nurse practitioners, physician assistants, therapists, and other non-facility-based providers. These are submitted on the CMS-1500 form.

• Primary Mailing Address: For all professional claims, the definitive keystone first claims address is:

Keystone First
P.O. Box 7115
London, KY 40742-7115

It’s crucial to use the full ZIP+4 code to ensure prompt delivery and processing. Many providers simply remember P.O. Box 7115 London KY 40742, but adding the `-7115` suffix is a best practice. This address is also sometimes referred to historically as the keystone health plan east claims address, reflecting the plan’s origins.

Institutional Claims (UB-04)

Institutional claims are for services provided by facilities such as hospitals (inpatient and outpatient), skilled nursing facilities, home health agencies, and hospices. These are submitted on the UB-04 (CMS-1450) form.

• Primary Mailing Address: For institutional claims, the address differs:

Keystone First
P.O. Box 7182
London, KY 40742-7182

Again, the full ZIP+4, specifically P.O. Box 7182 London KY 40742-718, is highly recommended. Misdirecting an institutional claim to the professional claims address can lead to significant delays and potential denials due to incorrect routing.

Electronic Claim Submission: The Preferred Method

While paper claims to P.O. Box 7115 London KY are accepted, electronic claim submission (EDI) is Keystone First’s preferred method. EDI offers numerous advantages, including faster processing, reduced administrative burden, and fewer errors.

EDI Payer ID and Clearinghouses

Keystone First’s Payer ID for electronic claims is 22176. Most providers submit claims through a clearinghouse. Common clearinghouses that support Keystone First include:

• Availity: A widely used clearinghouse that offers a robust platform for claim submission, eligibility checks, and claim status inquiries. Providers can often submit claims directly through Availity’s portal or integrate it with their practice management system.
• Change Healthcare (formerly Emdeon/WebMD): Another major player in the EDI space, Change Healthcare facilitates millions of transactions daily.
• Other HIPAA-Compliant Clearinghouses: Many other clearinghouses are compatible. Always confirm with your chosen vendor that they support Keystone First (Payer ID 22176).

Common Electronic Claim Submission Errors & Troubleshooting

Even with EDI, errors can occur. Here are some frequent issues and how to address them:

1. Missing or Invalid NPI: Ensure the rendering and billing NPIs are correct and active.
Troubleshooting:* Verify NPIs on the NPPES registry. Update your practice management system.
2. Invalid CPT/HCPCS or Diagnosis Codes: Codes may be outdated, incorrect for the service, or not medically necessary for the diagnosis.
Troubleshooting:* Consult the latest CPT/HCPCS manuals and ICD-10-CM guidelines. Review medical necessity documentation.
3. Demographic Mismatches: Patient name, date of birth, or member ID on the claim does not match Keystone First’s records.
Troubleshooting:* Always verify eligibility and benefits prior to service. Use the exact spelling and member ID provided by Keystone First.
4. Missing Prior Authorization: Services requiring pre-approval were rendered without it.
Troubleshooting:* Implement a robust prior authorization workflow. Check the Keystone First provider manual for services requiring authorization.
5. Duplicate Claims: Submitting the same claim multiple times.
Troubleshooting:* Track claim submissions carefully. If a claim was denied, do not resubmit it as a new claim; follow the appeal process.
6. Clearinghouse Rejections: These are rejections from your clearinghouse, not Keystone First. They often indicate formatting errors or missing required fields.
Troubleshooting:* Review the clearinghouse rejection report immediately. Correct the errors and resubmit through the clearinghouse. These claims never reached Keystone First.

Timely Filing Limits: The 180-Day Rule

The keystone timely filing limit is a critical rule that, if missed, can lead to outright claim denial.

• Standard Limit: Keystone First requires claims to be submitted within 180 calendar days from the date of service. This applies to both professional and institutional claims.
• Exceptions: While rare, exceptions may apply in specific circumstances, such as:
• Retroactive Eligibility: If a member’s eligibility is determined retroactively, the filing limit may be extended. Providers typically have 180 days from the date the eligibility was confirmed.
• Coordination of Benefits (COB): If Keystone First is the secondary payer, the filing limit may be extended to 180 days from the date of the primary payer’s remittance advice.
• Administrative Errors: In very limited cases, if Keystone First made an administrative error preventing timely submission, an extension might be granted.
• Documentation is Key: For any exception, meticulous documentation is essential. This includes proof of retroactive eligibility, primary payer EOBs, or correspondence with Keystone First regarding administrative issues. Without solid evidence, claims filed past the 180-day limit will be denied as untimely.

Provider Relations and Support: Who to Call When You Need Help

Navigating complex billing issues often requires direct communication with the payer. Keystone First offers several channels for provider support.

• Provider Services: For general inquiries, eligibility verification, benefits information, and basic claim status, call 1-800-521-6007. This is your first point of contact for most questions.
• EDI Support: If you’re experiencing technical issues with electronic claim submission (e.g., connectivity, Payer ID issues, specific error messages from Keystone First’s system), use the same 1-800-521-6007 number and select the option for EDI support. They can assist with issues related to Payer ID 22176.
• Provider Relations Representatives: For more complex issues, training, or ongoing relationship management, your practice may have an assigned Provider Relations Representative. Check the Keystone First provider portal or manual for contact information specific to your region or facility type.
• Website Resources: The Keystone First provider website (keystonefirst.com/providers) is an invaluable resource. It hosts provider manuals, forms, news updates, and FAQs. Regularly checking this site can prevent many common billing issues.

General Billing Tips for Clean Claims

To minimize denials and accelerate payments, focus on submitting “clean claims” from the outset.

• Verify Eligibility and Benefits: Always confirm patient eligibility and specific benefits with Keystone First before rendering services. This prevents denials for non-covered services or inactive membership.
• Accurate Coding: Ensure CPT/HCPCS and ICD-10-CM codes accurately reflect the services provided and the patient’s condition. Up-to-date coding manuals are essential.
• Complete Documentation: Medical records must fully support the services billed. Inadequate documentation is a leading cause of denials.
• Prior Authorization: Confirm if a service requires prior authorization and obtain it before the service is rendered. Document the authorization number on the claim.
• Review Claims Before Submission: Implement a robust internal review process for all claims, whether electronic or paper. Catching errors before submission saves significant time and resources.

Real-World Billing Scenarios & Patient Status Changes

Understanding how different patient scenarios impact billing is crucial for accurate claim submission. Here, we outline common situations and their billing implications for Keystone First.

Scenario 1: New Patient Office Visit (Professional Claim)

• Situation: A new patient presents for an initial evaluation and management (E/M) visit.
• Billing Action:
• Verify Keystone First eligibility and benefits.
• Obtain patient demographics and insurance information accurately.
• Document the visit thoroughly, supporting the chosen E/M code (e.g., 99202-99205).
• Submit a CMS-1500 claim form.
• Mailing Address (if paper): Keystone First, P.O. Box 7115, London, KY 40742-7115.
• Electronic Submission: Payer ID 22176 via your clearinghouse.
• Timely Filing: Within 180 days of the date of service.

Scenario 2: Established Patient Follow-up (Professional Claim)

• Situation: An established patient returns for a follow-up visit related to a chronic condition.
• Billing Action:
• Re-verify eligibility if there’s been a significant time gap or change in patient status.
• Document the visit, supporting the appropriate E/M code (e.g., 99212-99215).
• Submit a CMS-1500 claim form.
• Mailing Address (if paper): Keystone First, P.O. Box 7115, London, KY 40742-7115.
• Electronic Submission: Payer ID 22176.
• Timely Filing: Within 180 days of the date of service.

Scenario 3: Outpatient Hospital Surgery (Institutional & Professional Claims)

• Situation: A patient undergoes an outpatient surgical procedure at a hospital.
• Billing Action: This scenario generates two separate claims:

1. Institutional Claim (Hospital Facility Fees):

• Hospital bills for facility charges (operating room, recovery, supplies, nursing).
• Requires prior authorization for many surgical procedures.
• Submit a UB-04 claim form.
• Mailing Address (if paper): Keystone First, P.O. Box 7182, London, KY 40742-7182.
• Electronic Submission: Payer ID 22176.
• Timely Filing: Within 180 days of the date of service.

2. Professional Claim (Surgeon’s Fees):

• Surgeon bills for their professional services (performing the surgery).
• Submit a CMS-1500 claim form.
• Mailing Address (if paper): Keystone First, P.O. Box 7115, London, KY 40742-7115.
• Electronic Submission: Payer ID 22176.
• Timely Filing: Within 180 days of the date of service.

Scenario 4: Emergency Department Visit (Institutional & Professional Claims)

• Situation: A patient presents to the hospital emergency department for an acute condition.
• Billing Action: Similar to outpatient surgery, this involves two claims:

1. Institutional Claim (ED Facility Fees):

• Hospital bills for ED facility charges, supplies, and ancillary services.
• Submit a UB-04 claim form.
• Mailing Address (if paper): Keystone First, P.O. Box 7182, London, KY 40742-7182.
• Electronic Submission: Payer ID 22176.
• Timely Filing: Within 180 days of the date of service.

2. Professional Claim (Emergency Physician’s Fees):

• Emergency physician bills for their professional services.
• Submit a CMS-1500 claim form.
• Mailing Address (if paper): Keystone First, P.O. Box 7115, London, KY 40742-7115.
• Electronic Submission: Payer ID 22176.
• Timely Filing: Within 180 days of the date of service.

Scenario 5: Inpatient Hospital Stay (Institutional & Professional Claims)

• Situation: A patient is admitted to the hospital for an inpatient stay.
• Billing Action:

1. Institutional Claim (Hospital Stay):

• Hospital bills for the entire inpatient stay, including room and board, ancillary services, and nursing care.
• Requires prior authorization for non-emergent admissions.
• Submit a UB-04 claim form.
• Mailing Address (if paper): Keystone First, P.O. Box 7182, London, KY 40742-7182.
• Electronic Submission: Payer ID 22176.
• Timely Filing: Within 180 days of the date of discharge.

2. Professional Claims (Attending Physician, Consultants):

• The attending physician and any consulting specialists (e.g., cardiologist, pulmonologist) bill for their daily inpatient E/M services and procedures.
• Each physician submits a CMS-1500 claim form.
• Mailing Address (if paper): Keystone First, P.O. Box 7115, London, KY 40742-7115.
• Electronic Submission: Payer ID 22176.
• Timely Filing: Within 180 days of each date of service.

Common Denial Codes & Step-by-Step Appeal Instructions

Denials are an inevitable part of medical billing, but understanding common denial codes and having a robust appeals process can significantly impact your practice’s financial health.

Understanding Common Denial Codes (CARC/RARC)

Keystone First, like other payers, uses standard Claim Adjustment Reason Codes (CARC) and Remittance Advice Remark Codes (RARC) to explain claim adjustments and denials. Familiarizing yourself with these codes is the first step in effective denial management.

• CO-16: Claim/service lacks information which is needed for adjudication.
• Meaning: This is a very common denial, indicating that essential information is missing or incomplete on the claim. This could be anything from a missing NPI, an incomplete diagnosis code, a missing prior authorization number, or insufficient detail in the claim description.
• Action: Review the claim thoroughly against the patient’s chart and Keystone First’s billing guidelines. Identify the missing information, correct the claim, and resubmit or appeal with the added data.
• M86: Missing/incomplete/invalid documentation.
• Meaning: This RARC often accompanies CO-16 and specifically points to issues with the supporting medical documentation. The payer believes the clinical notes do not adequately justify the services billed or are missing key elements.
• Action: This requires a deep dive into the patient’s medical record. Ensure the documentation clearly supports medical necessity, the level of service billed, and any procedures performed. You will need to provide this documentation with your appeal.
• CO-29: The time limit for filing has expired.
• Meaning: Your claim was submitted past the keystone timely filing limit of 180 days from the date of service.
• Action: Unless you have documented proof of an exception (e.g., retroactive eligibility, primary payer EOB for COB), this denial is often difficult to overturn. If an exception applies, gather all supporting documentation and submit an appeal.
• CO-50: These are non-covered services because this is not deemed a ‘medical necessity’ by the payer.
• Meaning: Keystone First determined the service was not medically necessary based on their clinical guidelines or the documentation provided.
• Action: Review your documentation to ensure it clearly articulates the medical necessity. If you believe the service was medically necessary and supported by clinical evidence, prepare a strong appeal with detailed clinical notes and potentially peer-reviewed literature.
• CO-97: The benefit for this service is included in the payment/allowance for another service/procedure that has already been adjudicated.
• Meaning: This indicates bundling or incidental services. Keystone First believes the service billed is part of a larger procedure or another service already paid.
• Action: Review CPT coding guidelines for bundling rules (e.g., NCCI edits). If you believe the service was distinct and separately billable, provide documentation and appeal.

Step-by-Step Appeal Instructions for Denied Claims

A denial is not the end of the road. Keystone First has a formal appeals process that providers can utilize.

Level 1: Initial Provider Appeal

1. Identify the Reason for Denial: Carefully review the Explanation of Benefits (EOB) or Electronic Remittance Advice (ERA) to understand the CARC and RARC codes.
2. Gather Supporting Documentation:

• A copy of the original claim.
• The EOB/ERA showing the denial.
• A clear, concise cover letter explaining why the claim should be reconsidered, referencing the specific denial reason.
• Complete medical records supporting the service (progress notes, operative reports, lab results, imaging reports, prior authorization numbers).
• Any other relevant documentation (e.g., proof of timely filing for CO-29, primary payer EOB for COB).

3. Complete the Provider Appeal Form: Keystone First typically requires a specific Provider Appeal Form, which can be found on their provider website.
4. Submit the Appeal:

• Mailing Address: Keystone First, P.O. Box 7186, London, KY 40742-7186.
• Timely Filing for Appeals: Appeals must generally be submitted within 60 calendar days from the date of the denial notice. Check the specific EOB or provider manual for the exact timeframe.
• Keep Records: Always make a copy of everything you send and send appeals via certified mail with a return receipt requested for proof of submission.

Level 2: Second Level Appeal (if initial appeal is denied)

If your initial appeal is denied, you typically have the right to a second-level appeal.

1. Review the First Appeal Decision: Understand why your initial appeal was upheld.
2. Gather Additional Documentation/Information: This might involve more detailed clinical rationale, peer-reviewed literature, or a more in-depth explanation of the service’s medical necessity.
3. Submit a Second Appeal: Follow a similar process to the first appeal, clearly indicating it is a second-level appeal. Use the same appeal mailing address (P.O. Box 7186 London KY 40742-7186) and adhere to the specified timeframe (usually another 60 days from the first appeal denial).

Level 3: External Review (if applicable)

For certain types of denials (e.g., medical necessity), if both internal appeals are denied, providers or members may have the right to request an external review by an independent review organization. This process is governed by state and federal regulations and Keystone First’s specific policies. Consult the Keystone First provider manual or contact Provider Services for guidance on external review options.

By meticulously following these guidelines, understanding the critical distinctions between claim types, leveraging electronic submission, and diligently managing denials and appeals, your practice can significantly optimize its revenue cycle when billing Keystone First. Remember, precision and persistence are your greatest assets in medical billing.

FAQ: Common Questions Answered

What is the claims address for Keystone Health Plan East?

The provided article specifically details the claims addresses for Keystone First, which was formerly known as Keystone Mercy Health Plan and serves as a leading Medicaid managed care plan in Southeastern Pennsylvania. The article does not provide specific addresses for “Keystone Health Plan East.” For Keystone First claims, please use the following:

• Primary Claims Mailing Address (Professional – CMS-1500):
  Keystone First
  P.O. Box 7115
  London, KY 40742-7115
• Primary Claims Mailing Address (Institutional – UB-04):
  Keystone First
  P.O. Box 7182
  London, KY 40742-7182

It’s crucial to distinguish between different health plans to ensure your claims reach the correct destination and avoid processing delays.

How do I check the status of a Keystone First claim?

While this specific article focuses on the submission process, mailing addresses, and timely filing limits, it does not explicitly detail the method for checking the status of a submitted Keystone First claim. In a real-world billing scenario, providers typically check claim status through several channels:

• Provider Portal: Most managed care organizations, including Keystone First, offer a secure online provider portal where you can log in to view claim status, payment information, and eligibility.
• Electronic Data Interchange (EDI) Reports: If you submit claims electronically via a clearinghouse (using Payer ID 22176), you would typically receive 277 Claim Status Response files back through your clearinghouse, which provide automated updates on claim adjudication.
• Direct Contact: For more complex inquiries, contacting Keystone First’s provider services directly via phone is an option, though online and EDI methods are generally more efficient for routine checks.

Always leverage your electronic tools first for the quickest and most accurate updates.

Are there different timely filing limits for appeals or specific services?

The article clearly states the standard timely filing limit for initial claims with Keystone First is 180 calendar days from the date of service. This is a critical deadline for all standard professional and institutional claims. However, the article provides a separate mailing address for appeals (Keystone First, P.O. Box 7186, London, KY 40742-7186) but does not specify a distinct timely filing limit for these appeals. In practice, appeal filing limits are almost always separate from initial claim filing limits and can vary. Providers must consult official Keystone First provider manuals or their website for the precise timely filing limits for appeals and any potential exceptions for specific services or circumstances, as these are often distinct and equally stringent.

What is the Payer ID for submitting Keystone First claims electronically?

For efficient electronic claim submission to Keystone First, the designated Payer ID is 22176. This Payer ID is essential when transmitting CMS-1500 (professional) or UB-04 (institutional) claims through HIPAA-compliant Electronic Data Interchange (EDI) vendors or clearinghouses such as Availity or Change Healthcare. Utilizing the correct Payer ID ensures that your electronic claims are routed accurately and promptly to Keystone First for processing, significantly streamlining your revenue cycle management compared to paper submissions.

External Resources & Authority Links

• For more detailed insights, refer to the CMS guidelines.
• For more detailed insights, refer to the AMA CPT coding resources.