- ABN Modifiers
- American Medical Association and Current Procedural Terminology
- CMS Forms and Publications
- CMS Regional Offices
- Clinical Lab Improvement Amendment
- Comprehensive Error Rate Testing
- Electronic Health Records
- Electronic Prescribing
- Evaluation and Management Documentation Guidelines
- Federal Register
- Health Insurance Portability and Accountability Act of 1996
- Interactive Voice Response System
- Limitation of Liability (Advance Beneficiary Notice of Noncoverage)
- Local Coverage Determination
- Medically Unlikely Edits
- Medicare Coverage Database
- Medicare Electronic Data Interchange
- Medicare Fraud and Abuse
- Medicare Learning Network®
- Medicare Provider-Supplier Enrollment with NGS
- NGS Internet Resources
- NGSConnex Online Web Application Can Save Time and Money
- NGS Check Provider Enrollment Application Status Tool
- National Correct Coding Initiative
- National Coverage Determination
- National ICD-10-CM-PCS: The Next Generation of Coding
- National Provider Calls and Events
- National Provider Identifier
- National Provider Identifier Registry
- National Uniform Claim Committee
- Open Door Forums
- P.O. Box Mailing Addresses
- Patient Protection and Affordable Care Act of 2010
- Physician Quality Payment Program
- Provider Contact Center
- Provider Enrollment
- Reconsideration (Second Level of Appeal)
- Recovery Audit Program
- Redetermination (First Level of Appeal)
- Skilled Nursing Facility Consolidated Billing
- U.S. Government Printing Office
- Washington Publishing Company
ABN Modifiers
| Modifier | Description |
|---|---|
| GA | Waiver of liability statement issued, as required by payer policy, individual case |
| GX | Notice of liability issued, voluntary under payer policy |
| GY | Item or service statutorily excluded or does not meet the definition of any Medicare benefit |
| GZ | Item or service expected to be denied as not reasonable and necessary (forgot to issue ABN to patient) Note: All claim line items submitted with a GZ modifier shall be denied automatically and will not be subject to complex medical review |
For more information on ABNs, you may refer to the CMS Advance Beneficiary Notice of Noncoverage.
Reviewed 10/13/2023