What are the billing rules for A310A?

Limited to two per patient per physician per 12 months, except re-assessments for hospital admissions; extras are paid at a lesser fee (GP23). Add E078 (+50%) in the office or a hospital out-patient clinic (not ED, in-patient or LTC) when the patient has an established chronic disease and the claim uses one of the listed diagnostic codes, for example 340 MS, 343 cerebral palsy or 714 rheumatoid arthritis (A175, GP25, GP26). Can be done by video or telephone with an existing patient-physician relationship; add K300A (video) or K301A (telephone). Telephone pays 85% of the fee (Appendix J AJ1, A66, A70).

What is A310A often billed with?

E078 chronic disease assessment premium (A175, GP25). K001 detention after 40 minutes (GP30).

Why is A310A rejected?

AT3: Billed as virtual care but OHIP found no existing patient-physician relationship, such as an in-person service by you in the past 24 months (A66).

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Billing code

A310A — Physical medicine and rehabilitation medical specific re-assessment

Q: What is OHIP billing code A310A?

Physiatrist follow-up re-assessment with a full relevant history and exam of one or more systems.

Physiatry follow-up

A physiatrist bills A310 for a follow-up re-assessment with a full relevant history and exam of one or more systems.

Watch for: Limited to 2 per patient per physician per 12 months, except for hospital admissions; extras pay a lesser fee.

Provider	Specialist	Assistant	Anaesthetist	Non-anaesthetist
$0.00	$75.90	$0.00	$0.00	$0.00

Code: A310A
Description: Physical medicine and rehabilitation medical specific re-assessment
FHO+ basket: Not in the FHO+ base rate basket (Schedule 2 or 2B).
Effective date: Apr 1, 2026
Termination date: No end date

Explanation

Updated October 26, 2026

Physiatrist follow-up re-assessment with a full relevant history and exam of one or more systems.

What it covers

A medical specific re-assessment is a specialist service that requires a full, relevant history and physical examination of one or more systems (GP23).

A310 is the Physical Medicine & Rehabilitation (31) code in the General Listings (A175).

Billing rules

Limited to two per patient per physician per 12 months, except re-assessments for hospital admissions; extras are paid at a lesser fee (GP23).
Add E078 (+50%) in the office or a hospital out-patient clinic (not ED, in-patient or LTC) when the patient has an established chronic disease and the claim uses one of the listed diagnostic codes, for example 340 MS, 343 cerebral palsy or 714 rheumatoid arthritis (A175, GP25, GP26).
Can be done by video or telephone with an existing patient-physician relationship; add K300A (video) or K301A (telephone). Telephone pays 85% of the fee (Appendix J AJ1, A66, A70).

Often billed with

E078 chronic disease assessment premium (A175, GP25).
K001 detention after 40 minutes (GP30).

Common rejections

AT3: Billed as virtual care but OHIP found no existing patient-physician relationship, such as an in-person service by you in the past 24 months (A66).

Related codes: A313, A311, A318, A510, A511, C311

Source: Schedule of Benefits (July 1, 2026), Consultations and Visits, Physical Medicine & Rehabilitation (31), page A175.

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