OHIP Billing Guide🩺 ServicePublished 2026
W045

W045 OHIP Billing Code: Neurosurgery Consultation for Chronic Care Residents

The W045 billing code is used for consultations by neurosurgeons for non-emergency, long-term care in-patient services covered by OHIP. It ensures remuneration for the evaluation and management of complex neurological conditions.

For Ontario Physicians & Billing StaffOHIP Schedule of Benefits Reference145.60 CAD~4 min read

1What Is the W045 OHIP Code?

The W045 billing code specifies a consultation service provided by neurosurgeons to residents of non-emergency long-term care facilities. These consultations are crucial for the assessment and management of ongoing neurological issues such as shunt complications, progressive myelopathy, or chronic subdural collections.

A neurosurgery consultation typically involves extensive diagnostic evaluations to determine whether surgical intervention is warranted or if alternatives should be pursued, particularly in a chronic care setting where patient management poses unique challenges. Due to the code's specificity, it's commonly missed when aspects like the eligibility setting or documentation requirements aren’t thoroughly considered.

2Related Codes

CodeNameFrequencyDescription
A935Special surgical consultationOne service per 12-month periodA special surgical consultation for more complex evaluations within neurosurgery.
C935Special surgical consultationOne service per 12-month periodSimilar to A935, but for consultations conducted in C-categorized settings.
A045ConsultationOne service per two consecutive 12-month periodsGeneral consultation service within the neurosurgery specialty.
A046Repeat consultationOne additional service per two consecutive 12-month periodsA follow-up consultation for the same patient with the same diagnosis, rendered more than 12 months after the initial consultation.

3Eligibility Requirements

To bill the W045 code, the consultation must be conducted in chronic care settings such as Nursing Homes, Homes for the Aged, or Convalescent Hospitals, excluding designated palliative care beds. The consultation must follow a written request from a referring physician, nurse practitioner, or dental surgeon. This request must clearly define the consultant by name, relevant patient and referrer details, and the nature of the consultation required. Only one consultation per two consecutive 12-month periods is permissible for the same diagnosis, except as provided in the policy. Ensure that time spent is appropriately documented in the patient’s medical record.

4What Your Clinical Note Must Show

1Documentation Required

The following items must be documented to support billing the W045 code:

  • Written consultation request from a referring physician, nurse practitioner, or dental surgeon.
  • Consultation request must correctly identify both the consultant and the patient, including the patient’s health number.
  • Relevant clinical information detailing the referral objectives and services required.
  • Detailed consultation notes, including opinions, findings, and recommendations.
  • Accurate documentation of start and end times for the consultation service.

5Weak vs. Strong Note Examples

The strong note clearly identifies the referral source and neurosurgical issue, provides detailed findings, and confirms communication with the referring physician, unlike the weak note which lacks detail and documentation of actions taken.

Weak Note

Patient seen for neurology consult. Recommendations provided.

Strong Note

Patient referred from Dr. Smith for evaluation of potential shunt malfunction. Conducted comprehensive history and physical examination, revealing signs consistent with shunt dysfunction. Recommended further imaging and discussed surgical options with the family. Detailed report sent to Dr. Smith.

  • Specific referral source
  • Clear indication of the neurosurgical issue identified
  • Thorough recommendations and next steps
  • Confirmation of report sent to referring physician

6Common Reasons This Code Is Missed

1
Lack of Written Request
Failing to document or retain a written request from the referring physician can lead to billing rejections.
2
Misunderstanding Frequency Limits
Misinterpretations regarding the allowable frequency of consultations per diagnosis can lead to incorrect billing.
3
Incomplete Time Recording
Omitting to document the start and end times of the consultation in the medical record can invalidate the billing claim.
4
Inappropriate Setting
Billing the consultation code in non-eligible settings, such as for patients in designated palliative care beds, can lead to denials.
5
Insufficient Documentation
Failing to provide adequate details in the consultation note can result in a downgraded payment to a general assessment fee.
Document W045 correctly — every time
Empathia's templates automatically structure your notes to capture every required element for audit-proof billing.

8Frequently Asked Questions

Can W045 be billed for consultations occurring in emergency department settings?
No, W045 is specifically for non-emergency long-term care in-patient services.
How frequently can W045 be billed for the same diagnosis?
One consultation per two consecutive 12-month periods, with exceptions for inpatient or ED settings.
What types of conditions in neurosurgery usually require the W045 consultation?
Conditions like shunt complications, progressive myelopathy, or chronic subdural collections often necessitate such consultations.
For a patient with a chronic subdural collection, what's a typical clinical decision during W045 consultation?
Decisions often revolve around whether surgical intervention or continued observation is warranted.
What makes a neurosurgery consultation appropriate over regular consultation services?
The complexity of neurosurgical assessments and the potential need for surgical intervention generally warrant this specialized consultation.
If a chronic care patient presents with a new neurological complaint, can W045 be billed?
Yes, if the complaint represents a new, unrelated diagnosis, a new consultation is billable.
How does the setting impact the use of W045 for a neurosurgery consultation?
It must be used in a long-term care setting such as a nursing home or chronic care hospital, not palliative care beds.
Are neurosurgery consultations in nursing homes for shunt complications eligible under W045?
Yes, if all documentation and setting requirements are met, these consultations qualify for W045 billing.
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.
@2026 Empathia AI, Inc. All rights reserved.