MODIFIERS: When is it appropriate to append the AQ modifier?

MODIFIERS: When do I need to append the 99 modifier?

Where is the written Part B Reopening Form located?

What is timely filing to adjust a claim?

Where are the appeal forms?

What is timely filing for a claim?

Additional Events Links

Resources Education Partnership Request Form Five Steps to Webinar Success Provider Outreach and Education Reminders

Additional Events Links

Resources Education Partnership Request Form Five Steps to Webinar Success Provider Outreach and Education Reminders

What is the receipt date of the claim?

What is the refund address?

What is the denial date?

What is the mailing address for submitting a claim?

What is the timely filing for an appeal?

What is the address to send the QIC appeal?

What is the QIC timely filing limit?

What is the ICN?

What is my pay-to address?

What is my Payer ID?

Does Medicare cover a sign language interpreter?

Telehealth Services

Telehealth Services Table of Contents General Information Originating Site Distant Site List of Covered Medicare Telehealth Services Billing Facility Fee for Originating Site Payment for Professional Fee Place of [...]

Telehealth Extension 2025

Telehealth Extension 2025 A Congressional continuing resolution bill has extended telehealth coverage for services in all U.S. geographic locations through 9/30/2025. Based on this guidance, National Government Services will continue to pay [...]

Credentialing, Enrollment and Revalidation

Credentialing, Enrollment and Revalidation Table of Contents Requirements Facilities that are not qualified Qualifications Application Forms You Will Need Required Application Fee Documentation State Survey, Tie-in Notice [...]

Learn About PECOS Web

Learn About PECOS Web Table of Contents CMS Provider Enrollment Systems Advantages of Online Enrollment Get Started Other Resources Get Access Password Requirements Multi-Factor Authentication Get Help [Return to [...]

Federally Qualified Health Center Basic Billing and Reimbursement

Are you a federally qualified health center (FQHC) provider eager to deepen your understanding of billing and reimbursement under FQHC prospective payment system (PPS)? Whether you're new to the role or just need a refresher, this webinar [...]

CO-22

Avoiding/Correcting This Error During patient registration it’s important for office staff to identify whether a beneficiary’s claims should be covered by other insurance before, or in addition to, Medicare. Providers shall use our [...]

CO-109

Avoiding/Correcting This Error Palmetto GBA is the Medicare Administrative Contractor for processing claims of railroad retirees, regardless of their location. Providers and suppliers must verify patients' Medicare entitlement before [...]

CO-16

Avoiding/Correcting This Error This denial message is specific to chiropractic claims with CPT/HCPCS codes that are not billable by Medicare enrolled chiropractors. Medicare Part B coverage for chiropractic care is limited to spinal [...]

CO-16

Avoiding/Correcting This Error The MBI is necessary for all claims submitted to MAC. Claims without a correct MBI are rejected, requiring providers to verify and resubmit them. To avoid this, use the Eligibility Lookup in NGSConnex before [...]

Skilled Nursing Facility Consolidated Billing

Did you know that skilled nursing facilities (SNFs) are responsible for paying outside entities for most services provided to beneficiaries while they are in a covered Part A stay and for certain services for Part B beneficiaries? Streamline [...]

Outpatient Psychotherapy Services: A Focus on Coverage and Documentation Requirements

Outpatient psychotherapy services are being reviewed as part of our Part A Medical Review Targeted Probe and Educate program. This session will provide a high-level overview of outpatient psychotherapy services with a focus on coverage and [...]

PR-31

Avoiding/Correcting This Error Services were denied for one or more of the following reasons: The name or Medicare number was incorrect or missing. The date of death precedes the date of service. Expenses were incurred prior to coverage. [...]

PR-31

Avoiding/Correcting This Error Services were denied for one or more of the following reasons: The name or Medicare number was incorrect or missing. The date of death precedes the date of service. Expenses were incurred prior to coverage. [...]

NGSConnex- Account Management

Do you need assistance with login issues and account suspensions? Do you know who your Local Security Officer is and what they are responsible for? We will also review how to edit the user profile and updating access within the portal. After [...]

Provider Enrollment: Opioid Treatment Program

During this webinar, we’ll provide a brief overview of an Opioid Treatment Program (OTP) provider, an understanding of submitting the CMS-855A or CMS-855B paper application and how to complete the provider enrollment Internet-based Provider [...]

Telehealth for Hospice Face-to-Face Recertification Extended Through September 30, 2025

Telehealth for Hospice Face-to-Face Recertification Extended Through September 30, 2025 Hospice physicians and nurse practitioners may continue to conduct the face-to-face encounter required for recertification using telehealth (audio/video [...]

MLN Connects® Newsletter: May 8, 2025

MLN Connects® Newsletter: May 8, 2025 News Direct Graduate Medical Education: Get Annual Update Factors Compliance Walkers: Prevent Claim Denials Events HCPCS Public Meeting — June 2–3 Medicare Advisory Panel on Clinical [...]

CMS FQHC Booklet

CO-109

Avoiding/Correcting This Error This denial is received when your Medicare patient is enrolled in a MA plan, instead of “traditional fee-for-service” Medicare. MA plans are health plans offered by private companies approved by Medicare that [...]

CO-109

Avoiding/Correcting This Error Palmetto GBA is the Medicare Administrative Contractor for processing claims of railroad retirees, regardless of their location. Providers and suppliers must verify patients' Medicare entitlement before [...]

CO-16

Avoiding/Correcting This Error This denial message is specific to chiropractic claims with CPT/HCPCS codes that are not billable by Medicare enrolled chiropractors. Medicare Part B coverage for chiropractic care is limited to spinal [...]

CO-16

Avoiding/Correcting This Error The billing provider's information on the claim is missing or invalid. To avoid this error, ensure the following details are accurate and included: the billing provider's NPI, name, address, ZIP code, and phone [...]

CO-16

Avoiding/Correcting This Error Certain services require the name and NPI of the ordering or referring physician, depending on the service type. Definitions:  Referring physician: Requests an item or service for a Medicare beneficiary. [...]

CO-16

Avoiding/Correcting This Error The MBI is necessary for all claims submitted to MAC. Claims without a correct MBI are rejected, requiring providers to verify and resubmit them. To avoid this, use the Eligibility Lookup in NGSConnex before [...]

CO-16

Avoiding/Correcting This Error This rejection is the result of submitting a CPT/HCPCS code without a required modifier. You are required to research the proper modifier to report with the CPT/HCPCS code then submit a new claim. Please use [...]

CO-22

Avoiding/Correcting This Error During patient registration it’s important for office staff to identify whether a beneficiary’s claims should be covered by other insurance before, or in addition to, Medicare. Providers shall use [...]

OA-18

Avoiding/Correcting This Error A duplicate claim submission occurs when a provider resubmits a claim either on paper or electronically for a single encounter and the service is provided by the same provider to the: same beneficiary; for the [...]

Rural Health Clinic Billing Basics

This webinar will provide a detailed overview of the Medicare billing requirements for rural health clinics (RHC), including the definition of a qualifying visit, locations where billable RHC services can occur, claim coding guidelines and [...]

A/B and DME Collaborative YouTube Video

A/B and DME Collaborative YouTube Video The A/B DME MACs are offering a YouTube video on Urological Supplies. This DME video tutorial provides information about urological supply requirements. Posted 5/7/2025  

Provider Contact Center – Make the Most of Your Call

Provider Contact Center – Make the Most of Your Call As of 5/1/2025, the Provider Contact Center (PCC) will service one PTAN/NPI combination per call. Before calling the PCC, make the most of your call by ensuring you have all authentication [...]

CO-16

Avoiding/Correcting This Error This rejection is the result of submitting a CPT/HCPCS code without a required modifier. You are required to research the proper modifier to report with the CPT/HCPCS code then submit a new claim. Please use [...]

OA-18

Avoiding/Correcting This Error A duplicate claim submission occurs when a provider resubmits a claim either on paper or electronically for a single encounter and the service is provided by the same provider to the: same beneficiary; for the [...]

CO-16

Avoiding/Correcting This Error The billing provider's information on the claim is missing or invalid. To avoid this error, ensure the following details are accurate and included: the billing provider's NPI, name, address, ZIP code and phone [...]

CO-109

Avoiding/Correcting This Error This denial is received when your Medicare patient is enrolled in an MA plan, instead of “traditional fee-for-service” Medicare. MA plans are health plans offered by private companies approved by Medicare [...]

CO-16

Avoiding/Correcting This Error Certain services require the name and NPI of the ordering or referring physician, depending on the service type. Definitions: Referring Physician: Requests an item or service for a Medicare beneficiary. [...]

Podiatry Services - Routine Foot Care and Debridement of Nails

While the Medicare Program generally excludes routine foot care services from coverage, there are specific indications or exceptions under which there are program benefits. Medicare payment may be made for routine foot care when the patient has [...]

Home Health Billing Coffee Break

Provider Outreach and Education is hosting a 30-minute coffee break to help answer your troublesome billing questions. This is a great opportunity to discuss areas of billing more in depth and review helpful guides and resources. Keep in mind [...]

Critical Care and Medicare Billing Compliance

While critical care codes did not change with the 2021 or 2023 AMA CPT updates, there are a lot of guidelines for billing these services. During this webinar, we'll discuss critical care coding, what is and is not critical care, how to [...]