OHIP Billing Guide🩺 ServicePublished 2026
C113

OHIP Billing Code C113: Complex Neurological Assessments for In-Patient Care

C113 covers complex neurological assessments by neurologists for in-patients with chronic complex diagnoses. This code facilitates ongoing management, reimbursing specialists for their expertise.

For Ontario Physicians & Billing StaffOHIP Schedule of Benefits Reference120.00 CAD~3 min read

1What Is the C113 OHIP Code?

C113 is an OHIP billing code used for complex neurological assessments conducted on hospital in-patients. These assessments are integral for managing patients with established chronic complex neurological diseases, such as advanced multiple sclerosis, ALS, or refractory epilepsy, where ongoing specialized neurologist involvement is required.

C113 ensures that neurologists are reimbursed for the additional time and expertise needed in these scenarios, distinguishing itself from simpler evaluations by focusing on comprehensive management needs. This code should not be used for initial evaluations or uncomplicated conditions like carpal tunnel syndrome.

Commonly missed points include the fact that the assessment is not eligible for initial evaluations, the patient's chronic complex diagnosis must be documented, and services are capped at 6 per patient per physician annually. Additionally, start and stop times must be meticulously recorded.

2Related Codes

CodeNameFrequencyDescription
A113Complex neurological assessmentSame conditions as C113Equivalent service outside hospital settings.
A180Special neurology consultationAs requiredA comprehensive consultation regarding complex neurological issues.
A185ConsultationAs requiredGeneral neurological consultation services.
A186Repeat consultationAs requiredFollow-up consultations after initial assessment.

3Eligibility Requirements

To bill OHIP C113, the following eligibility criteria apply:

  1. Service Scope: Must include elements of a medical-specific re-assessment.
  2. Initial Evaluation Exclusion: The service is not eligible for the initial evaluation of a patient by the billing physician.
  3. Frequency Limits: Limited to 6 assessments per patient, per physician, per 12-month period. Exceeding this limit results in fee adjustments to a lesser assessment fee.
  4. Pre-existing Diagnosis: The patient must have an established diagnosis of a chronic complex neurological disease.
  5. Incompatible Service Codes: E078 cannot be billed in conjunction with this code.

The service requires thorough documentation of start and stop times in the patient’s medical record for full payment.

4What Your Clinical Note Must Show

1Mandatory Documentation

Ensure all elements of service provision are recorded to meet OHIP's requirements.

  • Record the start and stop times of the assessment.
  • Document the pre-existing chronic complex neurological diagnosis.
  • Detail all re-assessment elements conducted during the service.

5Weak vs. Strong Note Examples

The strong note succeeds by providing comprehensive documentation that includes specific elements of the reassessment and records required details. The weak note fails due to general language and missing required documentation like start and stop times.

Weak Note

Patient seen in follow-up. Assessment done.

Strong Note

Patient with advanced multiple sclerosis presented for ongoing management.

Performed a detailed neurological re-assessment covering motor function, balance, and cognitive status.

  • Start time: 13:00
  • Stop time: 13:45
  • Diagnosis discussed: ALS
  • Management plan updated.

6Common Reasons This Code Is Missed

1
Initial Evaluations Incorrectly Billed
C113 is ineligible when billed for first-time patient evaluations.
2
Missing Documented Diagnosis
A chronic complex neurological diagnosis must already be in the patient’s record.
3
Exceeding Annual Visit Cap
Billing beyond 6 assessments per patient annually results in reduced fees.
Document C113 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 C113?
The fee for C113 is CAD $120.00.
Can C113 be billed when initially evaluating a patient?
No, C113 cannot be billed for initial evaluations.
What types of neurological disorders qualify for C113?
Disorders like advanced multiple sclerosis or ALS, requiring ongoing management, qualify.
In what scenarios would you use C113 instead of a standard consultation?
Use C113 for existing patients with chronic complex conditions needing frequent comprehensive assessments.
How does an established diagnosis affect billing C113?
An established chronic complex neurological condition is essential and must be documented for billing C113.
What information should be recorded to substantiate C113 billing?
Record start and stop times, details of the assessment, and confirm ongoing need for care.
Can C113 services be provided virtually?
Yes, C113 can be rendered virtually via video but not via telephone.
How often can C113 be billed for the same patient?
Up to 6 times per patient, per physician, within a 12-month period.
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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