Proposed Rule for Payment under the Ambulance Fee Schedule (AFS) published 5/26/06 (See AFS Regulations and Notices link.) Section 4531 (b) (2) of the Balanced Budget Act (BBA) of 1997 added a new section 1834 (l) to the Social Security Act which mandated the implementation of a national fee schedule for ambulance services furnished as a benefit under Medicare Part B. The fee schedule is effective for claims with dates of service on or after April 1, 2002, and it applies to all ambulance services, including volunteer, municipal, private, independent, and institutional providers, i.e., hospitals, critical access hospitals (except when it is the only ambulance service within 35 miles), and skilled nursing facilities.

Section 1834 (l) also requires mandatory assignment for all ambulance services. Ambulance providers and suppliers must accept the Medicare allowed charge as payment in full and not bill or collect from the beneficiary any amount other than any unmet Part B deductible and the Part B coinsurance amounts.

A cover sheet is provided with every year’s PUF giving detailed information concerning the amounts payable and any special circumstances pertinent for that year’s payments.


In response to several requests from the ambulance community for a national breakout of the geographic area definitions (rural, urban, and super rural) by zip code, we have prepared a table (see Downloads section below).  Please note that it is arranged by State (using each State’s two-letter postal abbreviation), and, within each State, all zip codes are listed.  There are two sides to the table – the current geographic area breakout on the left and the geographic area breakout under the Proposed Rule, which was published on May 26, 2006 on the right.  The Medicare contractor number and the locality are also included.  Please note that, in the far right column for each side of the table, R = Rural, Blank = Urban, and B = Super Rural.  None of the Super Rural areas has changed.  Please search for your State, then zip code within the State, and compare the two sides of the table to determine if your geographic area definition changes under the Proposed Rule discussion.

For a one-stop resource web page focused on the informational needs and interests of Medicare Fee-for-Service (FFS) ambulance suppliers, go to the Ambulance Services Center (see under “Related Links Inside CMS” below).


National Breakout of the Geographic Area Definitions by Zip Code [ZIP, 1.4MB] 

Zip Code to Carrier Locality File [ZIP, 4.11MB] – Updated 11/13/09 

Zip Codes requiring +4 extension [ZIP, 2KB] – Updated 11/13/09 

2009 End of Year Zip Code File [ZIP, 4.17MB] 

Regional Office Contacts [PDF, 39KB] – Updated 02/12/09