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Billing code

A933A — On-call Admission Assessment

On-call hospital admission assessment

Bill A933 for a family physician's first non-elective admission assessment from the on-call roster, as most responsible physician.

Watch for: Only one per patient per 30 days; further on-call admissions by you in that time pay as a general re-assessment.

Code

A933A

Description

On-call Admission 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

First non-elective hospital admission assessment by a family physician on the hospital's on-call roster who becomes the most responsible physician.

What it covers

A933 is the first hospital in-patient admission general assessment per patient per 30-day period when all of these apply: the physician is a GP or family physician on the hospital's on-call roster (whether or not on call that day); the admission is non-elective; and the physician is the most responsible physician (MRP) for the in-patient care (A7).

An admission assessment is the initial assessment rendered to admit the patient (GP40).

Billing rules

• Any further on-call admission assessment by the same physician for the same patient in the same 30 days is paid as a general re-assessment (A7).
• Not payable for an elective surgery admission when the same physician did a pre-operative assessment within 30 days of admission (GP41).
• Only one admission assessment is payable per admission. A transfer to another physician in the same hospital doesn't create another (GP40).
• If the physician already did a consultation, general assessment or general re-assessment in the ED or out-patient department before admitting, that service is the admission assessment (GP41).
• C933 is the in-patient listing for the same service, under the same conditions (A12).

Often billed with

• E082 MRP admission premium (+30%): once per admission, only when the MRP did the admission assessment, not for transfers within the hospital, and only if the physician isn't paid by the hospital for in-patient work (or that pay is reduced) (GP42).
• A933 counts toward the hospitalist premium for physicians with enough qualifying hospital services (GP103).
• FHO: A933A counts toward the special payment for hospital services (Agreement p.90, Schedule 3).

Common rejections

• VH9: The health number on the claim isn't registered with the Ministry. Check it against the patient's card or hospital record and resubmit.
• V18: OHIP's description is 'invalid admission/first visit date'. Check that the admission date on the claim is the date of this hospital admission.
• EH2: The health card version code doesn't match the Ministry's record. Get the current version code and resubmit.
• A36: OHIP's description is 'claimed by other practitioner'. Only one admission assessment is payable per admission, even when care is transferred (GP40), so check whether another physician billed it.

Related codes: C933, E082, C004, C122, C123, A003

Source: Schedule of Benefits (July 1, 2026), Consultations and Visits, Family Practice & Practice in General (00), page A7; General Preamble GP40 to GP42 (admission assessments)

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