OHIP Billing Guide🩺 ServicePublished 2026
W845

W845 OHIP Billing Code: Streamlined Oncology Consultations in Long-term Care

The W845 billing code covers limited oncology consultations for long-term care in-patients, addressing focused oncological queries.

For Ontario Physicians & Billing StaffOHIP Schedule of Benefits Reference115.95 CAD~3 min read

1What Is the W845 OHIP Code?

W845 is an OHIP billing code used by oncologists for limited consultations in long-term care facilities. This service typically addresses a specific, focused oncology-related question about a resident, such as assessing new symptoms for disease progression or evaluating the usefulness of continued surveillance scans due to the patient's frailty. Unlike more comprehensive consults, the limited consultation involves a singular, pointed inquiry.

Due to its specialized nature, this code is often missed when the scenario is mistaken for a repeat consultation of an existing issue that has already been addressed. It is vital to distinguish new or distinct clinical questions from those previously reviewed and documented.

2Related Codes

CodeNameFrequencyDescription
A445ConsultationAs neededIn-depth consultation for complex oncological diagnoses.
A446Repeat ConsultationAs necessary following initial consultationFollow-up consultations for re-assessing unresolved issues.
A845Limited ConsultationOnce per two consecutive 12-month periodsSame service as W845 but outside of long-term care setting.
C445ConsultationAs neededStandard consultation, typically for first-time evaluations.

3Eligibility Requirements

Under OHIP regulations, the W845 Limited Consultation can only be billed in certain circumstances. It is available to oncology specialists conducting limited, focused consultations for long-term care in-patients. It may be billed once per two consecutive 12-month periods for the same patient, physician, and diagnosis, and once every 12 months for an unrelated diagnosis.

Note: This code can only be claimed 6 months after a patient has undergone a Periodic Health Visit as per the Nursing Homes Act. Ensure all criteria are met prior to billing this service.

4What Your Clinical Note Must Show

1Eligibility Verification

Ensure eligibility criteria are fully met before billing.

  • Confirm patient's last Periodic Health Visit was over 6 months ago.
  • Verify the consultation is occurring in a long-term care setting.
2Clinical Documentation

Document detailed clinical notes for each limited consultation.

  • State the specific oncological issue addressed.
  • Summarize findings and clinical decisions made.
3Frequency Limits Checking

Adhere to frequency limits for consultations.

  • Verify that no other W845 has been billed for this patient in the past 24 months.
  • Ensure any previously billed consultation was for unrelated diagnosis.

5Weak vs. Strong Note Examples

The strong note clearly outlines the clinical rationale and actions taken, whereas the weak note lacks specificity and comprehensive documentation.

Weak Note

Discussed symptom management with patient, frail.

Strong Note

Evaluated new onset shortness of breath to determine potential disease progression.

Determined no current evidence to suggest significant progression as per recent scan.

Recommendation: Continue current surveillance schedule.

  • Documented presentation details
  • Described clinical decision-making process
  • Outlined follow-up recommendations

6Common Reasons This Code Is Missed

1
Confusion with Repeat Consultation
Choosing this code incorrectly when revisiting previously addressed issues.
2
Misunderstanding Eligibility Rules
Failure to meet requirements such as post-Periodic Health Visit timeframe.
3
Inadequate Documentation
Notes that do not adequately capture the focused nature of the consultation.
4
Frequency Limitations Overlooked
Billing the code more frequently than permitted.
Document W845 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 W845?
The fee for billing W845 is CAD 115.95 per service.
How often can W845 be billed for the same patient?
W845 can be billed once for the same patient and diagnosis in two consecutive 12-month periods, or in relation to a distinct diagnosis every 12 months.
What types of cases in oncology warrant this billing code?
Limited consultations, such as assessing new symptoms like pain or confusion that may indicate disease progression for residents of long-term care.
If a surveillance scan shows new findings, can W845 be billed?
Yes, if answering a specific question about disease progression based on new findings in a long-term care setting.
Who can refer a patient for a limited consultation using W845?
Referrals are typically from primary physicians or specialists concerned with a specific oncological question that requires an oncologist's input.
How should the consultation be reported if disease progression is ruled out?
Document the evaluation process, symptoms reviewed, and the conclusion that disease progression is not evident, justifying continued monitoring instead of intervention.
Can W845 be billed if the patient recently had a W845 for a different symptom?
Yes, if the new consultation addresses an unrelated diagnosis or distinct clinical question.
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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