OHIP Billing Guide🩺 ServicePublished 2026
C835

C835 OHIP Billing Code: Comprehensive Nuclear Medicine Consultation for In-Patient Care

The C835 code allows nuclear medicine specialists to bill for comprehensive consultations on hospital inpatients. Fee: CAD 342.25.

For Ontario Physicians & Billing StaffOHIP Schedule of Benefits Reference342.25 CAD~3 min read

1What Is the C835 OHIP Code?

The C835 OHIP billing code is used for comprehensive nuclear medicine consultations conducted on hospital inpatients. This code is typically utilized when a patient is being evaluated for radionuclide therapy or when a complex nuclear medicine study needs expert interpretation.

Specialists in nuclear medicine perform these consultations in clinical contexts that involve intricate diagnostic assessments or therapeutic decisions requiring a detailed understanding of radiopharmaceuticals. The comprehensive nature of this consultation means it often includes in-depth discussions and evaluations, making it a vital tool in the management of patients with complex conditions.

Physicians may sometimes miss claiming this code due to a misunderstanding of when a comprehensive consultation is justified as opposed to a standard assessment. Key reasons include inadequate documentation or failure to obtain a proper consultation request.

2Related Codes

CodeNameFrequencyDescription
A635ConsultationAs per service requirements.Standard consultation within nuclear medicine.
A636Repeat consultationRepeat as needed.Follow-up consultations in nuclear medicine.
A735Diagnostic consultationAs per diagnostic needs.Initial focused diagnostic consultations.
A835Comprehensive nuclear medicine consultationAs per comprehensive need in non-inpatient settings.Equivalent to C835 but outside hospital in-patient settings.

3Eligibility Requirements

To be eligible to bill the C835 code under OHIP, certain criteria and documentation requirements must be satisfied:

  • The consultation must be requested in writing by a referring physician, nurse practitioner, or dental surgeon.
  • The request should identify the consultant and the referring party by name and billing number, with specific details on the patient’s health number.
  • Situations warranting this consultation should involve complexity, seriousness, or obscurity in the case, or at the patient's or representative's request for another opinion.
  • The consultation involves crafting a comprehensive written report for the referring party, containing the consultant's findings and recommendations.

Consultations are limited to one service per two consecutive 12-month periods for the same patient and diagnosis, unless the patient is an inpatient or in an Emergency Department with an unrelated diagnosis, where restrictions allow additional services.

4What Your Clinical Note Must Show

1Consultation Request Requirements

The following documentation is necessary to meet the C835 code billing criteria:

  • A written request from a referring physician, nurse practitioner, or dental surgeon.
  • Identification of the consultant and referring party by name and billing number.
  • Patient information including name and health number.
  • Details on the complexity or seriousness warranting the consultation.
  • A comprehensive written report summarizing findings and recommendations.

5Weak vs. Strong Note Examples

The strong note succeeds by including specific details of the referral, assessment, and follow-up actions, whereas the weak note lacks specificity and detail.

Weak Note

Patient seen for nuclear medicine consultation. Findings discussed.

Strong Note

Comprehensive nuclear medicine consultation requested by Dr. Smith for complex radionuclide therapy assessment.

Findings include detailed evaluation of radiographic images and interpretation of nuclear medicine studies.

  • Report sent to Dr. Smith outlining recommendations for radionuclide therapy.
  • Consultation performed on patient admitted for suspected radiopharmaceutical complication.

6Common Reasons This Code Is Missed

1
Inadequate Documentation
Lack of a detailed written consultation request or failure to maintain reports.
2
Frequency Limit Exceeded
Attempting to bill more than the allowable number of consultations within the specified period.
3
Misclassification of Consultation Type
Confusion between standard and comprehensive consultation criteria.
Document C835 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 C835?
The fee for the C835 comprehensive nuclear medicine consultation is CAD 342.25.
How many comprehensive consultations can be billed in a two-year period?
One service per two consecutive 12-month periods, exceptions allowed for hospital inpatients or emergency department patients with specific circumstances.
What types of cases qualify for comprehensive consultations in nuclear medicine?
Cases requiring evaluation for radionuclide therapy or interpreting complex nuclear medicine studies qualify.
Can consultations be billed for patients with unrelated diagnoses?
Yes, consultations for clearly defined unrelated diagnoses are limited to once every 12 months.
What documentation is necessary for a consultation request?
A written request with consultant and referring party identification is necessary.
Is the C835 code applicable for outpatient settings?
No, use A835 for comprehensive consultations conducted in outpatient settings.
What should be included in the written report of a C835 consultation?
The report should include findings, opinions, and recommendations to the referring healthcare provider.
How should documentation be maintained for C835 services?
Copies of the consultation request and report must be kept in the patient’s medical record, unless centralized records are maintained in certain settings.
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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