Medicare Administrative Contractor (MAC) jurisdictions

Look up which Medicare Administrative Contractor jurisdiction processes A/B and DME claims for a given state or territory.

Updated July 18, 2026

Find the A/B MAC jurisdiction (which processes Medicare Part A and Part B fee-for-service claims) and the DME MAC jurisdiction (which processes durable medical equipment, prosthetics, orthotics, and supplies) for each state and territory. Jurisdiction assignments and the contractors that hold them are set by CMS and change over time — CMS periodically re-competes these contracts — so confirm the current contractor and any recent change on the CMS “Who are the MACs” pages before relying on this.

Search by state or jurisdiction

56 states shown

State or territory	A/B MAC jurisdiction	DME MAC jurisdiction
Alabama	JJ	Jurisdiction C
Alaska	JF	Jurisdiction D
American Samoa	JE	Jurisdiction D
Arizona	JF	Jurisdiction D
Arkansas	JH	Jurisdiction C
California	JE	Jurisdiction D
Colorado	JH	Jurisdiction C
Connecticut	JK	Jurisdiction A
Delaware	JL	Jurisdiction A
District of Columbia	JL	Jurisdiction A
Florida	JN	Jurisdiction C
Georgia	JJ	Jurisdiction C
Guam	JE	Jurisdiction D
Hawaii	JE	Jurisdiction D
Idaho	JF	Jurisdiction D
Illinois	J6	Jurisdiction B
Indiana	J8	Jurisdiction B
Iowa	J5	Jurisdiction D
Kansas	J5	Jurisdiction D
Kentucky	J15	Jurisdiction B
Louisiana	JH	Jurisdiction C
Maine	JK	Jurisdiction A
Maryland	JL	Jurisdiction A
Massachusetts	JK	Jurisdiction A
Michigan	J8	Jurisdiction B
Minnesota	J6	Jurisdiction B
Mississippi	JH	Jurisdiction C
Missouri	J5	Jurisdiction D
Montana	JF	Jurisdiction D
Nebraska	J5	Jurisdiction D
Nevada	JE	Jurisdiction D
New Hampshire	JK	Jurisdiction A
New Jersey	JL	Jurisdiction A
New Mexico	JH	Jurisdiction C
New York	JK	Jurisdiction A
North Carolina	JM	Jurisdiction C
North Dakota	JF	Jurisdiction D
Northern Mariana Islands	JE	Jurisdiction D
Ohio	J15	Jurisdiction B
Oklahoma	JH	Jurisdiction C
Oregon	JF	Jurisdiction D
Pennsylvania	JL	Jurisdiction A
Puerto Rico	JN	Jurisdiction C
Rhode Island	JK	Jurisdiction A
South Carolina	JM	Jurisdiction C
South Dakota	JF	Jurisdiction D
Tennessee	JJ	Jurisdiction C
Texas	JH	Jurisdiction C
U.S. Virgin Islands	JN	Jurisdiction C
Utah	JF	Jurisdiction D
Vermont	JK	Jurisdiction A
Virginia	JM	Jurisdiction C
Washington	JF	Jurisdiction D
West Virginia	JM	Jurisdiction C
Wisconsin	J6	Jurisdiction B
Wyoming	JF	Jurisdiction D

Check the controlling source

This lookup shows the jurisdiction for each state, not the current contractor company, because CMS reassigns MAC contracts periodically. Use the CMS “Who are the MACs” pages for the contractor currently holding each jurisdiction and its portal and mailing details.

Source and currency

CMS A/B MAC and DME MAC jurisdiction assignments · Updated Jurisdiction assignments verified against CMS MAC pages; contractors change on CMS re-competition · Reviewed July 18, 2026

CMS — Medicare Administrative Contractors (Who are the MACs) (opens in a new tab)

Related Knowledge

Medicare Administrative Contractors (MACs)
What MACs do and why the jurisdiction matters.
Medicare billing
Medicare enrollment application types

Medicare Administrative Contractor (MAC) jurisdictions

Source and currency

Related Knowledge

Referenced in the Knowledge Base

The Medicare Beneficiary Identifier (MBI)

National and local coverage determinations

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