US · guidance
CMS Pub. 100-06, ch. 5, § 411.1
Exhibit 1 – Overpayment Refund Form
The term Medicare beneficiary identifier (Mbi) is a general term describing a
beneficiary's Medicare identification number. For purposes of this manual, Medicare
beneficiary identifier references both the Health Insurance Claim Number (HICN) and
the Medicare Beneficiary Identifier (MBI) during the new Medicare card transition
period and after for certain business areas that will continue to use the HICN as part of
their processes.
SHALL BE COMPLETED BY MEDICARE CONTRACTOR
Date: ________________________________
Contractor Deposit Control # _____________Date of Deposit: _____________
Contractor Contact Name: ________________________ Phone #: _____________
Contractor Address: _________________________________________________
Contractor Fax: _____________________________________________________
________________________________________________________________________
______________
SHALL BE COMPLETED BY PROVIDER/PHYSICIAN/SUPPLIER, OR OTHER
ENTITY
Please complete and forward to your Medicare contractor. This form, or a similar
document containing the following information, should accompany every
unsolicited/voluntary refund so that receipt of check is properly recorded and applied.
PROVIDER/PHYSICIAN/SUPPLIER OR OTHER ENTITY NAME:
________________________________
ADDRESS: _____________________________________________________________
PROVIDER/PHYSICIAN/SUPPLIER #: _______________ TAX ID #:
______________
CONTACT PERSON: ______________________ PHONE #: _____________________
AMOUNT OF CHECK $: ___________ CHECK #: ___________ CHECK DATE:
______
REFUND INFORMATION
For each claim, provide the following:
Patient Name: ____________________________ Medicare beneficiary identifier:
_____________________
Medicare Claim Number: ___________________ Claim Amount Refunded $:
_________
Reason Code for Claim Adjustment: _______ (Select reason code from list below. Use
one reason per claim.)
(Please list all claim numbers involved. Attach separate sheet, if necessary)
Note: If Specific Patient/Medicare beneficiary identifier Amount data not available for all
claims due to Statistical Sampling, please indicate methodology and formula used to
determine amount and reason for overpayment:
________________________________________
NOTE: If specific patient Medicare beneficiary identifier information is not provided, no
appeal rights can be afforded with respect to this refund. Providers/physicians/suppliers,
and other entities who are submitting a refund under the OIG’s Self-Disclosure Protocol
are not afforded appeal rights as stated in the signed agreement presented by the OIG.
For Institutional Facilities Only:
Cost Report Year (s) ________________________
(If multiple cost report years are involved, provide a breakdown by amount and
corresponding cost report year.)
For OIG Reporting Requirements:
Do you have a Corporate Integrity Agreement with OIG? ___ Yes ___ No
Are you a participant in the OIG Self-Disclosure Protocol? ___ Yes ___No
________________________________________________________________________
______________
Exhibit 1 – Overpayment Refund Form (Cont.)
Reason Codes:
Billing/Clerical: MSP/Other Payer Involvement:
Miscellaneous:
01 – Corrected Date of Service 07 – MSP Group Health Plan Insurance 12 –
Insufficient Doc
02 – Duplicate 08 – MSP No Fault Insurance 13 – Patient
Enroll HMO
03 – Corrected CPT Code 09 – MSP Liability Insurance 14 – Svcs Not
Rendered
04 – Not Our Patient(s) 10 – MSP, Workers Comp. 15 –
Medical Necessity
05 – Mod. Add/Remove (Incl Black Lung) 16 – Other-
Please Specify
06 – Billed in Error 11 – Veterans Administration
_____________________
History
(Rev. 315, Issued: 05-17-19, Effective: 06-18- 19, Implementation: 06-18-19)
Provenance
- Source
- cms.gov
- Retrieved
- 2026-08-25
- Edition
- iom-2026-08-25
- Content hash
2e76d7a627837988f4e7a5e1b2c6cf8f51c399af04304a39f406b3ba4c81dd61
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