US · guidance
CMS Pub. 100-04, ch. 1, § 10.1.1
Payment Jurisdiction among A/B MACs (Part B) for Services
Paid Under the Physician Fee Schedule and Anesthesia Services
(Rev. 4473, Issued: 12-6-19; Effective: 3-9-20; Implementation: 3-9-20)
The jurisdiction for processing a request for payment for services paid under the
Medicare Physician Fee Schedule (MPFS) and for anesthesia services is governed by the
payment locality where the service is furnished and will be based on the ZIP code.
Though a number of additional services appear on the MPFS database, these payment
jurisdiction rules apply only to those services actually paid under the MPFS and to
anesthesia services. (For example, it does not apply to clinical lab, ambulance or drug
claims.)
Effective for claims received on or after April 1, 2004, A/B MACs (Part B) must use the
ZIP code of the location where the service was rendered to determine A/B MACs (Part
B) jurisdiction over the claim and the correct payment locality. Effective for dates of
service on or after October 1, 2007, except for services provided in POS “Home,” if they
are not already doing so, A/B MACs (Part B) shall use the CMS ZIP code file along with
the ZIP code submitted on the claim with the address that represents where the service
was performed to determine the correct payment locality. (See section 10.1.1B for
instructions on processing services rendered in POS Home -12 and section 10.1.1.1 for
instructions on when a 9-digit ZIP code is required.)
When a physician, practitioner, or supplier furnishes physician fee schedule or anesthesia
services in payment localities that span more than one A/B MAC (Part B)’s service area
(e.g., provider has separate offices in multiple localities and/or multiple A/B MACs (Part
B)), separate claims must be submitted to the appropriate area A/B MACs (Part B) for
processing. For example, when a physician with an office in Illinois furnishes services
outside the office setting (e.g., home, hospital, SNF visits) and that out-of-office service
location is in another A/B MAC (Part B)’s service area (e.g., Indiana), the A/B MAC
(Part B) which processes claims for the payment locality where the out of office service
was furnished has jurisdiction for that service. It is the A/B MAC (Part B) with the
correct physician fee schedule pricing data for the location where the service was
furnished. In the majority of cases, the physician fee schedule or anesthesia services
provided by physicians are within the same A/B MAC (Part B) jurisdiction that the
physicians’ office(s) is/are located.
Although pricing rules for services paid under the MPFS remain in effect, effective for
claims with dates of service on or after January 25, 2005, suppliers (including
laboratories, physicians, and independent diagnostic testing facilities (IDTFs) must bill
their A/B MAC (Part B) for the technical component and professional component of
diagnostic tests that are subject to the anti-markup payment limitation, regardless of the
location where the service was furnished. Beginning in 2005, and in each subsequent
calendar year (CY) through 2013, CMS provided A/B MACs (Part B) with a national
abstract file containing Healthcare Common Procedural Coding System (HCPCS) codes
that are payable under the MPFS as anti-markup tests for the year. In addition, CMS
made quarterly updates to the abstract file to add and/or delete codes, as needed, in
conjunction with the MPFSDB quarterly updates. Beginning in 2014, CMS adopted a
more streamlined approach to providing the A/B MACs with the HCPCS codes payable
under the MPFS as anti-markup tests for the year. The national abstract file was
discontinued and an Anti-markup (formerly Purchased Diagnostic) Test Indicator, to
identify HCPCS codes payable under the MPFS as anti-markup tests for the year, was
added to the MPFS payment file. Quarterly updates to the Anti-Markup Test Indicator
are made directly to the MPFS Payment file. As with all other services payable under the
MPFS, the ZIP code of the locality in which the service was furnished determines the
payment amount. Refer to §30.2.9 of this chapter for information on the anti-markup
payment limitation as it applies to supplier billing requirements.
A. Multiple Offices
In states with multiple physician fee schedule pricing localities or where a provider has
multiple offices located in two or more states, or there is more than one A/B MAC (Part
B) servicing a particular state, physicians, suppliers and group practices with multiple
offices in such areas must identify the specific location where office-based services were
performed. This is to insure correct claim processing jurisdiction and/or correct pricing of
MPFS and anesthesia services. The A/B MAC (Part B) must ensure that multiple office
situations are cross-referenced within its system. If a physician/group with offices in
more than one MPFS pricing locality or a multi-contractor state fails to specify the
location where an office-based service was furnished, the A/B MAC (Part B) will
return/reject the claim as unprocessable.
Physicians, suppliers, and group practices that furnish physician fee schedule services at
more than one office/practice location may submit their claims through one office to the
A/B MAC (Part B) for processing. However, the specific location where the services
were furnished must be entered on the claim so the A/B MAC (Part B) has the ZIP code,
can determine the correct claims processing jurisdiction, and can apply the correct
physician fee schedule amount.
B. Service Provided at a Place of Service Other than Home-12 or Office-11
For claims submitted prior to April 1, 2004, in order to determine claims jurisdiction,
Medicare approved charges, Medicare payment amounts, Medicare limiting charges and
beneficiary liability, Part B fee-for-service claims for services furnished in other than in
an office setting or a beneficiary’s home must include information specifying where the
service was provided.
Effective for claims received on or after April 1, 2004, claims for services furnished in all
places of service other than a beneficiary’s home must include information specifying
where the service was provided. A/B MACs (Part B) must use the address on the
beneficiary files when place of service (POS) is home - 12, or any other mechanism
currently in place to determine pricing locality when POS is home – 12. A/B MACs
(Part B) shall take this same action for any other POS codes they currently treat as POS
home.
Effective for claims processed on or after October 5, 2009, for services rendered in POS
home -12, or for any other POS the contractor currently treats as POS home, when alerted
by the shared system that a 9-digit ZIP code is required according to the CMS ZIP Code
file, and a 9-digit ZIP code is not available on the beneficiary file, the contractor shall
determine that ZIP code by using the United States Postal Service Web site. They shall
use that ZIP code to determine the correct payment locality for the claim for pricing
purposes.
A/B MACs (Part B) processing these claims shall take necessary steps to ensure that the
claims for services rendered in the physical location for which they are the MAC are
priced and processed correctly applying appropriate edits as necessary.
Effective January 1, 2011, for claims processed on or after January 1, 2011, using the
5010 version of the ASC X12 837 professional claim format, submission of the complete
address of where the service was performed is required regardless of where the service
was performed. This information should be entered on the claim per the Implementation
Guide for the current version. Contractors shall use that ZIP code to determine correct
payment locality.
Effective January 1, 2011 for claims processed on or after January 1, 2011 on paper
claims submitted on the CMS-1500 form, submission of the ZIP code of where the
service was provided will also be required for all POS code and contractors shall use that
ZIP code to determine correct payment locality.
For paper and electronic claims, when a global diagnostic service code is billed (e.g. no
modifier TC and no modifier 26), the address where the technical component was
performed shall be reported on the claim (this only applies to global services with
separate technical component/professional component). Global billing does not apply to
anti-markup tests because the technical and professional component must be billed
separately when the anti-markup payment limitation applies.
Refer to Pub 100-04, Chapter 35, Section 10.2.1 and 10.2.2 for more information on
global billing and separate technical and professional billing.
Contractors shall make no changes for claims submitted on the 4010A1 format as they
pertain to POS Home and determining pricing locality.
Contractors shall require the submission of the 9-digit ZIP code when required per the
CMS ZIP Code file.
C. Outside A/B MAC (Part B) Jurisdiction
If A/B MACs (Part B) receive claims outside of their jurisdiction, they must follow
resolution procedures in accordance with the instructions in 10.1.9. If they receive a
significant volume or experiences repeated incidences of misdirected Medicare Physician
Fee Schedule or anesthesia services from a particular provider, an educational contact
may be warranted.
D. HMO Claims
For services that HMOs are not required to furnish, A/B MACs (Part B) process claims
for items or services provided to an HMO member over which they have jurisdiction in
the same manner as they process other Part B claims for items or services provided by
physicians or suppliers. Generally, the physician/supplier who provides in-plan services
to its HMO members submits a bill directly to the HMO for payment and normally does
not get involved in processing the claim. However, in some cases, claims for services to
HMO members are also submitted to A/B MACs (Part B), e.g., where claims are received
from physicians for dialysis and related services provided through a related dialysis
facility.
History
(Rev. 4473, Issued: 12-6-19; Effective: 3-9-20; Implementation: 3-9-20)
Provenance
- Source
- cms.gov
- Retrieved
- 2026-08-25
- Edition
- iom-2026-08-25
- Content hash
604b73b9f5a18cfdfb591c75a5ffae64793a7d820ad9c5922f75bf07f6a064f8
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