G028 – Cervicovaginal mucous specimen for cellular analysis for postcoital testing
OHIP Diagnostic & Therapeutic Procedures Code — DIAGNOSTIC AND THERAPEUTIC PROCEDURES · Schedule of Benefits
A laboratory service for the cellular analysis of a cervicovaginal mucous specimen for postcoital testing. As per the rules on , this service is an insured service eligible for payment only when rendered by a physician (or a physician substituting for them) who performs the test in their own office for their own patient. It is part of a list of tests under 'Reproductive medicine' that are only payable to physicians where point of care testing is necessary for their practice.
When to Use
- Use G028 when performing a postcoital test in-office to assess sperm-cervical mucus interaction as part of an infertility investigation.
- Apply this code only when the physician personally performs the specimen collection and microscopic analysis at the point of care for their own patient.
Common Pitfalls
- Billing G028 for routine cervical cancer screening (Pap tests) will trigger an automatic rejection as this code is strictly restricted to postcoital testing.
- Submitting G028 for tests related to in-vitro fertilization or artificial insemination is prohibited under Regulation 552 and will lead to recovery during an audit.
- Claiming this code when the specimen is sent to an external laboratory rather than analyzed in the physician's own office violates the 'point of care' requirement.
Billing Tips
- Ensure the medical record explicitly documents the microscopic findings and the resulting clinical management plan to satisfy the J65 documentation requirements for diagnostic procedures.
- Verify that the service is not being claimed in conjunction with a laboratory fee code from the Schedule of Benefits for Laboratory Services, as G028 is intended for physician-performed office testing.
Effective: April 1, 2026
J. Diagnostic and Therapeutic Procedures
DIAGNOSTIC AND THERAPEUTIC PROCEDURES
Laboratory
Diagnostic and Therapeutic Procedures
The result of the test(s), the physician's interpretation of the results of the test(s) and the treatment decision based on the test results must be documented in the patient's permanent medical record.
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