Medicare Mississippi Part A

Summary

Medicare Mississippi Part A is a dental and medical payer operating in Mississippi. Claims route under payer ID 12M17, with 1 alternate ID in use across clearinghouses. Through clearinghouses it supports eligibility checks, institutional claims, and electronic remittance (ERA); ERA enrollment is required and takes several weeks.

At a glance

Payer ID

12M17Also seen as IMMS0

Also known as

Mississippi Medicare Part A Jurisdiction 7 (J7)

Service area

MS

Clearinghouse transaction setup

Which EDI transactions this payer supports, and how long clearinghouse enrollment typically takes when it is required.

Common questions

What is the payer ID for Medicare Mississippi Part A?

The payer ID for Medicare Mississippi Part A is 12M17. Alternate IDs seen across clearinghouses include IMMS0.

Does Medicare Mississippi Part A require ERA enrollment?

Yes. Medicare Mississippi Part A requires a separate ERA (835) enrollment before electronic remittances flow, and setup typically takes several weeks.

What states does Medicare Mississippi Part A cover?

Medicare Mississippi Part A operates in MS. Coverage can differ by plan and product line, so confirm the specific plan before you file.

What types of coverage does Medicare Mississippi Part A offer?

Medicare Mississippi Part A covers dental and medical.

Can I submit claims to Medicare Mississippi Part A electronically?

Yes. Medicare Mississippi Part A is reachable through clearinghouses for eligibility checks, institutional claims, and electronic remittance. Electronic claims are supported for institutional (837I).