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Billing code

Q141A — Mammography exclusion code

Mammography exclusion code

Bill Q141A at zero to remove a woman who had a mastectomy or is treated for clinical breast disease from the mammography bonus population.

Watch for: Expect a zero payment with explanatory code 30; a mammogram that was done is tracked with Q131A instead.

Code

Q141A

Description

Mammography exclusion code

FHO+ basket

Not in the FHO+ base rate basket (Schedule 2 or 2B).

Effective date

Mar 31, 2004

Termination date

No end date

Explanation

Updated October 26, 2026

Zero-fee exclusion code removing a woman who had a mastectomy or is treated for clinical breast disease from the mammography bonus population.

What it covers

Q141A is the mammography exclusion code (OMA Q-codes guide p.7, p.18). It applies to women who have had a mastectomy, or who are being treated for clinical breast disease (OMA Q-codes guide p.7, p.18).

Exclusion codes identify the patient as meeting the criteria to be left out of the target population for that preventive service (OMA Q-codes guide p.17). A mammogram that was done is tracked with Q131A instead (OMA Q-codes guide p.7). Q141A is not in the Schedule or Appendix Q; the source is the 2020 OMA guide.

Billing rules

• Bill at zero. The remittance advice pays zero with explanatory code 30, 'this service is not a benefit of OHIP' (OMA Q-codes guide p.17).
• Submit it with your normal fee-for-service and premium billing (OMA Q-codes guide p.17).
• The mammography bonus population is enrolled women aged 50 to 74 on March 31 of the fiscal year, and it counts a mammogram in the 30 months before March 31 (OMA Q-codes guide p.16).
• Bonus tiers Q110A to Q114A run from 55% to 75% of that population and are claimed at zero (AQ7-AQ8).
• Appendix Q lists the mammography tiers only for RNPGA, BSM, GHC, SJHC, SEAMO, WHA and CCM/FHG physicians who meet the minimum roster; FHN and FHO aren't listed (AQ7-AQ8). The April 2026 FHO agreement lets an FHO physician claim under only two headings, influenza and childhood immunizations (Agreement p.65 §8.1). The 2020 OMA guide still lists FHN and FHO (OMA Q-codes guide p.16), but the newer sources take precedence.

Related codes: Q131, Q110, Q114, Q140, Q142

Source: Not in the Schedule of Benefits; OMA Primary Care Q-Codes Quick Reference Guide (November 2020), Tracking and Exclusion Codes, pages 7 and 16-18; bonus tiers in Appendix Q, pages AQ7-AQ8

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