Claims
The links below provide access to a variety of resources related to filing Medicare claims, claims processing, reference tools, claims submission errors, common questions, and payment information. These resources will help guide you through the submission and processing of Medicare claims.
The system used to process your Medicare claims is called the Fiscal Intermediary Standard System (FISS). For more information about FISS, refer to the FISS Reference Guide which is available on the Educational Materials Web page.
General Claims Processing Information
The following provides general information about how claims are processed through FISS.
- Time
Limitations for Filing Provider Claims
— Medicare
Claims Processing Manual (CMS Pub 100-04, Ch. 1, §70) - Claims
Processing Timeliness — Medicare
Claims Processing Manual (CMS Pub. 100-04, Ch. 1 §80)
- Common Working File
- Provider
Retention of Health Insurance Records — Medicare
Claims Processing Manual (CMS Pub 100-04, Ch. 1, §110)
Medicare Part A claims filing regulations and instructions apply regardless
of whether you submit the CMS-1450 (UB-04) claim on paper or electronically.
For information on Electronic Claims Filing refer to the Electronic
Data Interchange (EDI) Services page and the How
to Get Started—Electronic Billing Booklet. If you submit paper
claims, refer to the Medicare
Claims Processing Manual, Chapter 25, for
information on completing the UB-04 (CMS-1450) form.
The resources provided on our Web site are based upon Medicare regulations,
instructions, and forms established by the Centers
for Medicare & Medicaid Services (CMS). 
Please
refer to these resources when filing your claims with Cahaba.
Page last updated: October 14, 2008
