Medicare Claims Processing Manual (Pub. 100-04), Ch. 12 § 90.4.1
Provider Education
90.4.1 - Provider Education
(Rev. 1639, Issued: 11-21-08, Effective: 01-01-09, Implementation: 01-05-09)
ZIP Code files for the automated payment of the HPSA bonus payment will be developed and
updated annually. Effective for claims with dates of service on or after January 1, 2009, only
services provided in areas that are designated as of December 31 of the prior year are eligible
for the HPSA bonus payment. Physicians providing services in areas that were designated as
of December 31 of the prior year but not on the automated file may use the AQ modifier. Only
services provided in areas that were designated as of December 31 of the prior year but not on
the automated file may use the modifier. Services provided in areas that are designated
throughout the year will not be eligible for the HPSA bonus payment until the following year,
provided they are still designated on December 31. Services provided in areas that are de-
designated throughout the year will continue to be eligible for the HPSA bonus through the end
of the calendar year.
CMS will post on its Web site ZIP Codes that are eligible to automatically receive the bonus
payment as well as information on how to determine when the modifier is needed to receive the
bonus payment. Through regularly scheduled bulletins and list serves, A/B MACs (B) must
notify all physicians to verify their ZIP Code eligibility via the CMS Web site or the HRSA
Website for the area where they provide physician services.