CMS issued Change Request 14604 on September 15, beginning the annual process for its 2027 Health Professional Shortage Area physician bonus-payment file.
The file will control automatic bonus payments on qualifying Medicare physician services for dates of service from January 1 through December 31, 2027.
CMS plans to build the file using the latest HPSA designations available as close as possible to November 1, 2026. A test file is expected in the first week of December. The 2027 ZIP list has not been published.
How does the bonus work?
Medicare pays qualifying physicians a 10 percent incentive for covered professional services furnished in eligible geographic HPSAs. The program has been in place since January 1, 1991 — CR 14604 does not change the bonus percentage or create a new payment category.
Three mechanics that billing teams often overlook.
- The payments are taxable and reported to the IRS
- The incentive is calculated on the amount Medicare actually pays (not the full approved amount)
- CMS issues HPSA bonus payments on a quarterly schedule, instead adding the amount to each individual claim’s remittance
That quarterly payment structure means a qualifying claim can process successfully without showing an obvious extra 10 percent on its original remittance. Reconciliation requires tracking the separate incentive payment.
HPSA BONUS — TWO PAYMENT ROUTES
Automatic ZIP recognition vs. modifier AQ
AUTOMATIC
Service ZIP falls fully within a qualifying full-county HPSA
Or ZIP partially overlaps and is treated as belonging based on USPS dominance
Or ZIP lies completely within an eligible partial-county HPSA
No modifier needed
MODIFIER AQ
Address qualifies but ZIP only partially overlaps the designated area
Or address is inside an eligible HPSA but not captured in CMS’s annual file
Verify address-level eligibility via HRSA’s analyzer tool before submitting
AQ required — subject to post-payment review
Source: CMS Claims Processing Manual Ch. 12, CR 14604
Location determines eligibility
Eligibility follows where the physician actually furnishes the service.
CMS requires the claim to contain the name, address, and ZIP code of the service location. Several common assumptions are wrong.
- The patient’s home address does not determine eligibility
- The practice’s headquarters does not determine eligibility
- The billing entity’s location does not determine eligibility
Only geographic HPSAs qualify for this Medicare bonus. Population HPSAs, facility-based HPSAs, and dental HPSAs do not generate the physician incentive payment.
For mental health geographic HPSAs, the bonus applies specifically to qualifying psychiatry services.
Not every eligible address is on the automatic file
A practice that checks only whether its ZIP appears on CMS’s automatic list can miss qualifying service locations.
A ZIP may overlap a designated area only partially, or the annual file may not capture every eligible address because CMS builds it from a single data snapshot.
HRSA maintains a Medicare Physician Bonus Payment Eligibility Analyzer that checks individual street addresses against current HPSA designations. CMS tells providers to use this tool when a ZIP is not in the automatic file. If the address qualifies, modifier AQ can be submitted.
| Eligibility question | What to check |
| Is our ZIP on the automatic list? | CMS HPSA bonus ZIP file (available December for 2027) |
| Does this specific address qualify? | HRSA Physician Bonus Eligibility Analyzer |
| Do we need modifier AQ? | Yes, when the address qualifies but the ZIP isn’t on the automatic file |
| Is AQ subject to audit? | Yes — CMS instructs contractors to review samples of paid AQ claims |
Source: CMS HPSA Bonus page, Claims Processing Manual Ch. 12
Things that the bonus doesn’t cover
The incentive applies to qualifying physician professional services only. Several categories are explicitly excluded.
- Incident-to services
- Certain therapy services listed under non-qualifying PC/TC categories
- Dental HPSA designations (do not generate this Medicare physician bonus)
- Technical components of split services (only the professional component qualifies)
- Population and facility-based HPSAs (not the geographic designation used for this program)
A location designated as both a primary-care and mental-health HPSA does not produce two stacked bonuses. Medicare pays one incentive per service.
To-do list before December
The final 2027 file has not been produced, so a code-level ZIP audit is not yet possible. Practices can still prepare now.
- Inventory service locations currently receiving HPSA bonuses
- Separate automatic-payment sites from AQ-dependent addresses
- Validate AQ sites against HRSA’s address-level eligibility tool
- Confirm that billing systems are populating the actual service location (not the billing entity’s headquarters) on claims
- Reconcile quarterly HPSA bonus payments rather than looking for the bonus on individual claim remittances
When the 2027 file arrives in December, comparing it against the 2026 list will identify locations entering or leaving automatic-payment status — and flag addresses that may need AQ for the first time.
