OHIP Billing Guide🩺 ServicePublished 2026
A405

A405 OHIP Billing Code: Streamlined Consultations in Preventive Medicine

A405 allows preventive medicine specialists in Ontario to bill OHIP for limited consultations focused on specific, preventive health issues.

For Ontario Physicians & Billing StaffOHIP Schedule of Benefits Reference94.75 CAD~3 min read

1What Is the A405 OHIP Code?

A405 describes a limited consultation service under OHIP for services provided by preventive medicine specialists. It involves a focused assessment on specific issues, typically requiring less time than a full consultation. This could include advising on post-exposure prophylaxis or determining vaccine contraindications.

These consultations are especially relevant in public health and preventive medicine settings where time-efficient assessments are crucial for timely healthcare decisions. Despite their utility, A405 consultations are often missed for complex assessments that result in applying for a different consultation code instead.

To ensure accurate billing, physicians should ensure their reasons for using a limited consultation align with the needs for focused, time-efficient assessments commonly handled in preventive medicine contexts.

2Related Codes

CodeNameFrequencyDescription
A050Special community medicine consultationAs specified in Community Medicine listings$176.10 for broader community medicine consults.
A055ConsultationAs specified in Community Medicine listings$152.80 for standard community medicine consults.
A056Repeat consultationAs specified in Community Medicine listings$94.75 for follow-up consultations.
A400Comprehensive community medicine consultationAs specified in Community Medicine listings$270.60 for comprehensive assessments in community medicine.

3Eligibility Requirements

To bill under A405, a written request is required from a referring physician, nurse practitioner, or dental surgeon for circumstances requiring preventive medical expertise. Virtual consultations can be billed as A405A, but only if conducted via video, not telephone. Billing frequency is restricted to one service every two consecutive 12-month periods for the same patient and diagnosis, with allowances for unrelated diagnoses once every 12 months. Guidelines require that the consultation prompt the opinion of a physician due to case complexity or patient request.

4What Your Clinical Note Must Show

1Documentation Requirements for A405

Ensure detailed documentation following every consultation, with specific attention to:

  • Written referral from licensed practitioner.
  • Documented clinical findings and assessments.
  • Specific issues addressed in the consultation.
  • Patient's history relevant to the consultation.
  • Conclusion or recommendations provided.

5Weak vs. Strong Note Examples

The strong note succeeds by providing comprehensive details that justify the limited consultation, while the weak note lacks clarity and explicit detail.

Weak Note

Consultation conducted. Discussed vaccination.

Strong Note

Limited consultation requested by Dr. Smith for vaccine contraindication review after student's recent overseas travel. Reviewed medical history, discussed recent symptoms, evaluated current health status related to Hepatitis A vaccine eligibility.

  • Documented referral from Dr. Smith.
  • Thorough exploration of travel history.
  • Referenced evidence-based guidelines on vaccine contraindications.

6Common Reasons This Code Is Missed

1
Lack of Proper Referral Documentation
Failure to secure a written referral can lead to billing issues under OHIP policies.
2
Inadequate Detail in Consultation Documentation
Lack of specific details may result in the service being categorized as a lesser assessment.
3
Misclassification of Consultation Type
Physicians might improperly use A405 instead of a comprehensive consultation code when more comprehensive assessment is conducted.
Document A405 correctly — every time
Empathia's templates automatically structure your notes to capture every required element for audit-proof billing.

8Frequently Asked Questions

How often can A405 be billed for the same patient?
A405 can be billed once per two consecutive 12-month periods for the same patient and diagnosis, or once every 12 months for unrelated diagnoses.
Can A405 be billed for consultations conducted over the phone?
No, A405 may only be billed for virtual consultations conducted via video, not telephone.
What kind of cases typically require an A405 consultation in preventive medicine?
Cases like post-exposure prophylaxis advice or vaccine contraindication evaluations are typical scenarios for A405 in preventive medicine.
How are A405 consultations different from comprehensive consultations in preventive medicine?
A405 consultations are focused and time-efficient, addressing specific clinical questions compared to comprehensive consultations that cover more extensive assessments.
In what scenario can a limited consultation be appropriate after a referral from an emergency department?
A referral may request a preventive opinion following initial treatment, such as evaluating the necessity for immunization after exposure in a public setting.
Is it necessary to document both the referral and the consultation findings?
Yes, complete documentation must include both the referral and detailed consultation findings to justify the use of A405.
How does A405A relate to hospital in-patient consultations?
A corresponding code, C405, is used for in-patient consultations matching A405's criteria.
Disclaimer: This article is intended as a general educational resource for physicians and billing staff. It does not constitute billing advice or a definitive interpretation of the OHIP Schedule of Benefits. Always verify current billing codes, eligibility criteria, and documentation requirements directly against the official Schedule of Benefits or consult with a qualified medical billing specialist.
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