NHIC – California and New England Claim Corrections

NHIC often receives requests to correct a claim as a result of a billing error.

Claim corrections are generally simple corrections. For example:

• Dates of service entered incorrectly (i.e., 09152003 instead of 09152004)
• Units entered as 0001 instead of 0010
• Dollars entered as 2.00 instead of 200.00

To request corrections as a result of these issues, providers may do one of two things:

• Submit the remittance advices with the claim(s) in question identified, along with a reason for the correction.
• Submit a list that contains the beneficiary name, HIC number, ICN, date of service, along with a request to correct the item billed or paid incorrectly and the reason for the change.

Requests for corrections should be sent to the appropriate post office box.

• For Northern California: Medicare Written Inquiries, PO Box 2006, Chico, CA 95927-2006
• For Southern California: Medicare Adjustments, PO Box 272857, Chico, CA 95927-2857
• For New England: Medicare Written Inquiries, P.O. Box 1000; Hingham, MA 02044