OHIP Billing Guide🩺 ServicePublished 2026
C475

C475 OHIP Billing Code: Comprehensive Respirology Consultation

C475 is used by respirologists to bill for an in-depth consultation on hospital in-patients. It requires a specific written request from a referring practitioner.

For Ontario Physicians & Billing StaffOHIP Schedule of Benefits Reference185.80 CAD~3 min read

1What Is the C475 OHIP Code?

C475 represents a consultation provided by a respirologist to a hospital in-patient requiring expert advice about complex respiratory conditions. Typical scenarios include ventilatory management, pleural effusion evaluations, or oxygen needs assessment. In a hospital setting, this consultation helps provide specialized insights that general medical teams might need to adequately address severe or specialized respiratory conditions.

This code is often missed in cases where consultations are conducted without a proper referral or written documentation by the referring primary care physician or specialist. Appropriate record-keeping is crucial to ensure compliance and successful billing.

2Related Codes

CodeNameFrequencyDescription
A470Comprehensive respiratory disease consultationVariableUsed for comprehensive respiratory consultations.
A475ConsultationVariableEquivalent for consultations outside hospital in-patient settings.
A476Repeat consultationVariableUsed for follow-up consultations.
A575Limited consultationVariableApplies to limited scope consultations.

3Eligibility Requirements

  • Setting: The service must be rendered as non-emergency hospital in-patient services.
  • Referring Party: A written request is mandatory from a referring physician, nurse practitioner, or dental surgeon for a consultation to be valid.
  • Frequency: The service is limited to one consultation per two consecutive 12-month periods for the same diagnosis per patient, barring specific exemptions for in-patient scenarios 12-24 months apart.
  • Virtual Delivery: C475 may be billed as C475A for video-only virtual consultations. Telephone consultations do not qualify under this code for virtual service billing.

4What Your Clinical Note Must Show

1Essential Documentation

The following documents must be retained as part of the medical record for billing C475.

  • A written referral from a qualified referring practitioner.
  • Consultation details including patient name and health number.
  • Written report with findings and recommendations sent to referring practitioner.
2Time Recording

Precise time logging is crucial.

  • Record start and end time of the consultation in the patient's medical chart.

5Weak vs. Strong Note Examples

The strong note specifies the written request and outlines the detailed areas of clinical assessment and collaborative planning, while the weak note lacks specific details and clinical justification.

Weak Note

Consultation regarding patient's respiratory status conducted. Recommendations given.

Strong Note

Consultation conducted upon written request from Dr. Smith. Patient with complex pleural effusion issues requires specialized interventional plan and revised ventilatory support.

  • Evaluation of ventilation parameters.
  • Assessment of pleural effusion type and management plan.
  • Collaboration with treating team to adjust therapeutic approach.

6Common Reasons This Code Is Missed

1
Lack of Written Request
Consultation provided without a documented written referral from the referring practitioner.
2
Frequency Limitation Exceeded
Billing for the consultation exceeds the allowed frequency for the same diagnosis.
3
Incomplete Documentation
Missing or insufficient written report and time records required for OHIP billing.
Document C475 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 for C475?
The fee for billing C475 is CAD 185.80.
How often can C475 be billed for the same diagnosis?
It can be billed once per two consecutive 12-month periods unless certain conditions are met for in-patient services.
What cases typically qualify for C475 in respirology?
Complex cases such as ventilation management or evaluating interstitial lung abnormalities.
Can a consultation be requested post-service?
No, the consultation must be requested prior to the service as a written referral.
If referred from the ER, does this affect the billing of C475?
Yes, if the second consultation occurs in the ER within 12-24 months from the first, it can be billed again under specific rules.
Can C475 be billed for telephone consultations?
No, C475 may not be billed for telephone consultations; only video consultations qualify under virtual care.
What should be included in the written consultation report?
Findings, opinions, and recommendations must all be included in the report to the referring provider.
Does a consultation require a documented time log?
Yes, the start and end times of the consultation must be recorded in the patient's chart.
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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