OHIP Billing Guide🩺 ServicePublished 2026
A310

A310 OHIP Billing Code: Efficient Re-evaluation for Physiatry Patients

The A310 code is used by physiatrists in Ontario to bill for specific re-assessments of ongoing treatments or interventions, available for virtual or in-person appointments.

For Ontario Physicians & Billing StaffOHIP Schedule of Benefits Reference75.90 CAD~3 min read

1What Is the A310 OHIP Code?

The A310 code under the OHIP Schedule of Benefits allows specialists in Physical Medicine and Rehabilitation to bill for specific re-assessments. These sessions are necessitated by the need to evaluate the effectiveness of a recent intervention, such as a spasticity injection, a change in orthosis, or the introduction of a new exercise program.

These re-assessments focus primarily on the initial problem for which the patient was initially assessed, ensuring that care is targeted and efficient. Despite its importance, this re-assessment code can be easily overlooked, especially when physicians fail to document the start and end times of services provided, as required by OHIP billing guidelines.

2Related Codes

CodeNameFrequencyDescription
A313Medical specific assessmentNone specifiedInitial comprehensive assessment for Physical Medicine & Rehabilitation.
C313Medical specific assessmentNone specifiedAnother listing for initial comprehensive assessments in PM&R.
W314General re-assessment of patient in nursing homeNone specifiedUsed for patient re-assessments in nursing home settings.
A311Complex medical specific re-assessmentNone specifiedRe-assessment for complex medical cases in PM&R.

3Eligibility Requirements

According to the OHIP Schedule of Benefits, A310 may be used for medical specific re-assessments that require a full, relevant history and physical examination of one or more systems. It's essential that billing for A310 complies with the frequency limits: assessments are restricted to two per patient per physician per consecutive 12 month period, except for re-assessments administered during hospital admissions.

Proper documentation is critical, including recording the start and end times of the service. This code may also be used for services delivered virtually, either via video or telephone, billed as A310A.

4What Your Clinical Note Must Show

1Necessary Documentation for A310

To ensure accurate billing and compliance with the OHIP Schedule of Benefits, you must:

  • Record the service's start and end times in the patient's medical record.
  • Complete a full, relevant clinical history and physical examination of one or more systems.
  • Ensure all documentation is thorough and reflective of the medical necessity for re-assessment.

5Weak vs. Strong Note Examples

The strong note succeeds because it provides a detailed account of the patient's response to treatment, includes specific times for service documentation, and outlines changes made to the patient's care plan. In contrast, the weak note fails to offer sufficient detail or evidence of thorough assessment.

Weak Note

Re-assessed after spasticity injection, general evaluation completed.

Strong Note

Patient re-assessed following recent spasticity injection. Evaluated response to treatment and documented reduced muscle spasticity. Adjusted exercise regimen accordingly.

Service commenced at 14:00 and concluded at 14:30, with detailed examination of the patient's musculoskeletal response.

  • Observed significant reduction in spasticity.
  • Adjusted tailored exercise program to enhance treatment efficacy.

6Common Reasons This Code Is Missed

1
Incomplete Documentation
Failure to record start and end times or lacking detailed notes can result in claim rejections.
2
Exceeding Frequency Limits
Billing more than twice within a 12-month period without hospital admission reasons can lead to adjustments.
3
Misinterpretation of Service Requirements
Misunderstanding what constitutes a re-assessment under the A310 code.
4
Lack of Proper Coding for Virtual Services
Confusion about billing for virtual services leading to improper coding as in-person re-assessments.
Document A310 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 the A310 billing code?
The fee for the A310 billing code is $75.90.
How many times can A310 be billed in a 12-month period?
A310 can be billed up to two times per patient per physician in a 12-month period, with exceptions for hospital admissions.
Which scenarios require a medical specific re-assessment in physiatry?
Scenarios such as reviewing the effectiveness of a spasticity injection, evaluating a new orthosis, or adjusting an exercise program typically require a medical specific re-assessment.
How should a physiatrist document time for A310 services?
Physiatrists must record the service start and end times in the patient's medical record to meet OHIP requirements.
In what patient situations would A310 be preferable over other codes?
A310 is preferable when specifically re-assessing a patient's response to a previously implemented treatment or intervention.
Can A310 assessments be done virtually?
Yes, A310 assessments can be conducted virtually and billed as A310A.
What patient information is essential to document in an A310 encounter?
It's essential to document a detailed history, physical examination findings, response to treatment, and the specific times for service start and end.
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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