What is OHIP billing code A231?

A231 is "Neuro-ophthalmology consultation", an OHIP Consultations and Visits code from the Ontario Schedule of Benefits (Physician Services).

How much does A231 pay?

The current OHIP fee for A231 is $155.45, effective 2026-04-01, per the Ontario Schedule of Benefits.

How do I bill A231 to OHIP?

A231 is submitted through OHIP's MCEDT claims system, either directly or via billing software. SnapBill validates A231 claims against the Schedule of Benefits rules before submission.

What codes are related to A231?

Codes related to A231 in the Schedule of Benefits include A235, A236, C231, W231.

All codes

A231

A231 – Neuro-ophthalmology consultation

OHIP Consultations and Visits Code — CONSULTATIONS AND VISITS · Schedule of Benefits

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Levels of this visit

The A23x codes in this part of the Schedule of Benefits, lowest fee first. Bill the level the history and examination support.

Assessments

A230 Orthoptic assessment
Orthoptic assessment must include quantitative measurement of all cardinal positions of gaze (straight ahead, left, right, up, down, tilt right and tilt left), sensory testing for…
$26.20
A234 Partial assessment
A partial assessment is a limited service that constitutes a history of the presenting complaint, the necessary physical examination, advice to the patient, and an appropriate…
$31.95
A237 Periodic oculo-visual assessment - aged 19 years and below
A periodic oculo-visual assessment is an examination of the eye and vision system rendered primarily to determine if a patient has a simple refractive error (defined as myopia…
$59.35
A239 Periodic oculo-visual assessment - aged 65 years and above
A periodic oculo-visual assessment is an examination of the eye and vision system rendered primarily to determine if a patient has a simple refractive error (defined as myopia…
$59.35
A233 Specific assessment
A specific assessment is a service rendered by a specialist, in a place other than a patient’s home, that requires a full history of the presenting complaint and detailed…
$60.50

Consultations

A236 Repeat consultation
A repeat consultation is an additional consultation rendered by the same consultant, in respect of the same presenting problem, following care rendered to the patient by another…
$48.00
A235 Consultation
A consultation is an assessment rendered following a written request from a referring physician, nurse practitioner, or dental surgeon (for hospital-based insured dental…
$86.25
A231 Neuro-ophthalmology consultation(this code)
A consultation rendered by an ophthalmologist with fellowship training in neuro-ophthalmology for a patient with a neuro-ophthalmological disorder, requiring specific documented…
$155.45

A consultation rendered by an ophthalmologist with fellowship training in neuro-ophthalmology for a patient with a neuro-ophthalmological disorder, requiring specific documented examination elements.

Referral requiredFrom: Physician, NursePractitioner, DentalSurgeon

A written request from a referring physician, nurse practitioner, or dental surgeon must be kept in the consulting physician’s medical record (unless common medical records are maintained in hospital, LTC, or multi-specialty clinic).

The request must identify the consultant by name and/or specialty, the referring provider by name and billing number, and the patient by name and health number.

The written request must set out information relevant to the referral and specify services required.

A written report (including findings, opinions, and recommendations) must be provided to the referring physician, nurse practitioner, or dental surgeon (and patient's primary care provider if NP referral).

At least four of the following must be documented as part of the examination: (a) Detailed pupillary examination (includes pharmacological testing as applicable), (b) Detailed extraocular motility examination, (c) Ocular alignment testing, (d) Partial or complete neurological examination, (e) Detailed examination of the fundus, (f) Analysis of formal visual field test(s), (g) Analysis of pertinent diagnostic imaging studies.

Usage limits

Limited to one service per patient per physician per two consecutive 12-month periods for the same diagnosis (subject to general consultation limits in ).

A235Consultation (General)A236Repeat consultation C231Neuro-Ophthalmology Consultation (Hospital In-patient)W231Neuro-Ophthalmology Consultation (Long-term Care)

Ophthalmology consultations and visits may include retinal photography as a specific element of the insured service, where medically necessary.

If the requirements for A231 are not met, the service may be adjusted to a lesser assessment fee or a general consultation (A235).

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