OHIP Billing Guide🩺 ServicePublished 2026
A113

A113 OHIP Billing Code: Mastering Complex Neurological Assessments

The A113 code is used for billing complex neurological assessments for patients with chronic conditions. It is specific to ongoing management in neurology.

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

1What Is the A113 OHIP Code?

The A113 code under OHIP represents a Complex Neurological Assessment. It is specifically used by neurologists for ongoing management of patients with pre-established chronic complex neurological disorders. This could include conditions such as advanced multiple sclerosis, ALS, refractory epilepsy, or Parkinson's disease. This code is not applicable for initial evaluations or uncomplicated conditions like carpal tunnel syndrome or Bell’s palsy.

Proper use of this code requires a documented diagnosis of a chronic, complex condition, involving in-depth evaluation and management by a neurologist. The assessment is intended to address the complexity of the condition on a continuing basis.

2Related Codes

CodeNameFrequencyDescription
A180Special neurology consultationAs per service needUsed for special neurology consultations requiring in-depth expert opinion.
A185ConsultationAs per service needGeneral consultation for neurological cases.
A186Repeat consultationAs per service needFor reassessment of a prior consultation in neurology.
A385Limited consultationAs per service needFor limited neurological consultations.

3Eligibility Requirements

To bill A113, the following eligibility criteria must be met:

  1. Diagnosis Documentation: The patient must have an established diagnosis of a chronic complex neurological disease, documented in their medical record.
  2. Service Limitation: The code can only be used for up to six assessments per patient, per physician, per 12-month period. Any additional services beyond this limit will result in payment adjustment to a lesser fee.
  3. Initial Evaluation: The A113 code cannot be used for the patient's initial evaluation by the physician. Alternative consultation codes should be used in such cases.
  4. Medical Record Requirements: Both start and stop times of the assessment must be recorded in the patient's permanent medical record. Failure to do so will lead to a payment adjustment to a lesser fee.
  5. Exclusions: This service is not payable in conjunction with code E078.

4What Your Clinical Note Must Show

1Mandatory Documentation

Ensure these elements are recorded within the patient's medical record to avoid fee adjustments.

  • Start and stop times of the assessment
  • Documented diagnosis of a chronic complex neurological disease

5Weak vs. Strong Note Examples

The strong note succeeds because it details the clinical interactions and hard data required by OHIP, ensuring the diagnostic context and time documentation are clear.

Weak Note

Patient seen for neurological follow-up. Assessment performed.

Strong Note

Patient with advanced Parkinson's disease seen today. Discussed ongoing management including medication adjustment and mobility strategies.

  • Start time: 10:00 AM
  • Stop time: 10:45 AM
  • Diagnosis of record: Advanced Parkinson's disease

6Common Reasons This Code Is Missed

1
Initial Evaluation Misuse
A misunderstanding of A113 as valid for first evaluations results in incorrect billing.
2
Lack of Time Documentation
Failure to document both start and stop times of the assessment can lead to payment downgrade.
3
Ignoring Frequency Limits
Exceeding the six assessments per year cap without realizing leads to fee adjustments.
Document A113 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 billing A113?
The fee for billing A113 is CAD 120.00.
How often can A113 be billed for a patient?
It can be billed up to six times per patient, per physician, per 12-month period.
Which cases qualify for a complex neurological assessment in neurology?
Cases involving ongoing management of advanced multiple sclerosis, ALS, refractory epilepsy, or Parkinson's disease qualify.
Can A113 be used for conditions like carpal tunnel syndrome?
No, A113 is not intended for uncomplicated conditions such as carpal tunnel syndrome.
What needs to be included in the medical record for A113 billing?
Start and stop times of the assessment and a documented diagnosis are required.
Can A113 be billed for the first evaluation of a patient?
No, A113 is not eligible for payment for initial evaluations of a patient.
Is virtual delivery allowed for A113 billing?
Yes, A113 can be delivered virtually and billed as A113A.
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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