OHIP Billing Guide🩺 ServicePublished 2026
A474

A474 OHIP Billing Code: Streamlined Re-assessments in Respirology

A474 allows respirologists to efficiently bill for specific patient re-assessments. This code can be billed up to twice annually per patient, offering flexibility in outpatient follow-ups.

For Ontario Physicians & Billing StaffOHIP Schedule of Benefits Reference75.30 CAD~3 min read

1What Is the A474 OHIP Code?

What is A474?

A474 is a billing code in the Ontario Health Insurance Plan (OHIP) specifically for medical specific re-assessments rendered by specialists in respirology. This code is typically used in out-patient settings, allowing respirologists to evaluate the efficacy of treatment plans by performing a full history and physical examination of the patient.

Respirology re-assessments might focus on conditions such as asthma or COPD, especially if there have been recent changes to medication or therapy, like an inhaler adjustment or modification of oxygen delivery settings.

This billing code provides a structured means to ensure thorough patient follow-ups and continuity of care, preventing lapses in treatment efficacy post-intervention.

2Related Codes

CodeNameFrequencyDescription
A473Medical specific assessmentInitial assessmentInitial evaluation of respiratory conditions, typically involves comprehensive history and examination.
C473Medical specific assessmentInitial hospital-based assessmentFirst assessment for hospital in-patients with respiratory issues.
A471Complex medical specific re-assessmentAs clinically requiredRe-assessment involving detailed evaluation of complex patients.
C471Complex medical specific re-assessmentAs clinically required (in-patient)Complex re-evaluation for hospital in-patient care.

3Eligibility Requirements

Eligibility Requirements for A474

A474 can be billed by respirologists who perform a specific re-assessment that includes a comprehensive history and examination relevant to the patient's respiratory condition. The service can be rendered and billed for up to two times per patient per physician within a consecutive 12-month period, except when re-assessments are performed upon hospital admissions.

When recording the service, it is mandatory to note the start and end times of the assessment in the patient's medical record to validate the service duration. A474 can also be delivered virtually, using the billing designation A474A, in accordance with Appendix J guidelines for video or telephone consultations.

4What Your Clinical Note Must Show

1Documentation Requirements

Ensure the following details are recorded:

  • Full and relevant history with physical examination details.
  • Specific start and end times of the service.
  • Details of any treatment modifications or patient response evaluations.

5Weak vs. Strong Note Examples

The strong note succeeds by providing comprehensive clinical details and documentation of service duration, supporting thorough medical evaluation while clearly justifying the billable service.

Weak Note

Patient assessed. COPD follow-up. Updated inhaler prescription.

Strong Note

Conducted detailed respiratory examination for COPD management.

Reviewed patient's medication history, noting adherence to new inhaler regimen.

Patient reports improvement in dyspnea with current inhaler. Consider advocating for additional pulmonary function test.

  • Start time: 10:05 AM
  • End time: 10:30 AM

6Common Reasons This Code Is Missed

1
Inadequate Documentation
Omission of details like start/end times or insufficient clinical notes can lead to audits or denials.
2
Exceeding Frequency Limit
Billing more than two re-assessments per year per patient without proper justification results in denials.
3
Failure to Record Virtual Modality
Neglecting to note virtual service delivery can result in inaccurate billing and rejections.
Document A474 correctly — every time
Empathia's templates automatically structure your notes to capture every required element for audit-proof billing.

8Frequently Asked Questions

What is the fee associated with A474?
A474 bills at a flat fee of CAD 75.30 per re-assessment.
Can A474 be billed for respirology consults conducted virtually?
Yes, A474 can be billed virtuall as A474A for video or telephone consultations.
What respiratory conditions typically warrant billing A474?
Conditions like asthma, COPD, or patients on home oxygen therapy can often necessitate a re-assessment.
Should specific referrals be made for each reassessment under A474?
For follow-ups on persistent issues like asthma management after medication changes, specific referrals are not needed beyond initial consultation.
How does the A474 differ from a complex re-assessment code like A471?
A474 is suitable for general reassessments, while A471 involves more complex cases possibly requiring multifaceted treatment evaluations.
How should a typical patient scenario for A474 be documented?
Describe key changes, response to treatment, documented duration of chronic conditions, and significant monitoring adjustments.
What should be considered if I previously conducted an A473 assessment?
Ensure that the A474 timing and patient's clinical updates substantiate a need for further reassessment following any changes in treatment.
What clinical scenarios do not justify using A474?
Routine checks without substantial treatment or management changes typically do not require specific reassessment code usage.
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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