What are the billing rules for G558A?

These are team fees: claim the daily formula as if there were one physician-in-charge, even if the physician-in-charge changes during treatment (J30). When claiming critical, ventilatory, comprehensive or neonatal intensive care fees, no other critical care codes are payable to the same physician(s) (J30). Not payable for stabilized patients or patients in the unit only for ECG monitoring or observation, except when the patient is on a ventilator; bill consultations, assessments and procedures instead (J30, J31).

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Billing code

G558A — Comprehensive care (intensive care area) – physician-in-charge – 2nd to 30th day (per diem)

Q: What is OHIP billing code G558A?

Comprehensive ICU care per diem (critical care plus ventilatory support) by the intensive care physician-in-charge, 2nd to 30th day (per diem).

Comprehensive ICU care, days 2–30

Bill G558 per day, days 2 to 30, for comprehensive ICU care as physician-in-charge, after G557 on day 1.

Watch for: Not payable for stabilized or observation-only patients unless ventilated; no other critical care codes are payable that day.

Provider	Specialist	Assistant	Anaesthetist	Non-anaesthetist
$256.25	$0.00	$0.00	$0.00	$0.00

Code: G558A
Description: Comprehensive care (intensive care area) – physician-in-charge – 2nd to 30th day (per diem)
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

Comprehensive ICU care per diem (critical care plus ventilatory support) by the intensive care physician-in-charge, 2nd to 30th day (per diem).

What it covers

G558 is the comprehensive care fee for the physician-in-charge, 2nd to 30th day (per diem) (J32). It is marked #, so premises and equipment are hospital funded (J1).

Comprehensive care is complete care (both critical care and ventilatory support) by an intensive care physician. It includes the initial consultation and assessment, later examinations, intubation, ventilation, resuscitation, lines and catheters, CVP lines, defibrillation, cardioversion, urinary and nasogastric tubes, blood gases, lab tests, oximetry and ICP monitoring interpretation (J31).

Billing rules

These are team fees: claim the daily formula as if there were one physician-in-charge, even if the physician-in-charge changes during treatment (J30).
When claiming critical, ventilatory, comprehensive or neonatal intensive care fees, no other critical care codes are payable to the same physician(s) (J30).
Not payable for stabilized patients or patients in the unit only for ECG monitoring or observation, except when the patient is on a ventilator; bill consultations, assessments and procedures instead (J30, J31).
Bill G558 per day for days 2 to 30, after G557 on day 1; G559 from day 31 (J32).
If the patient is transferred from critical care to comprehensive care, the transfer day counts as the 2nd day of comprehensive care (J31).
Cardioversion and defibrillation are included, so don't bill Z437 separately (J31).
If the patient was discharged from the unit more than 48 hours earlier and is re-admitted, the 1st-day rate applies again on the day of re-admission (J30).
Life-threatening (G521/G522/G523) and other critical care (G395/G391) aren't payable to a physician paid a per diem for the same patient that day (J27, J28). C101 ICU/CCU premium is not payable when team fees are claimed (GP103).

Related codes: G557, G559, G400, G405, Z437

Source: Schedule of Benefits (July 1, 2026), Diagnostic and Therapeutic Procedures, Critical Care (Comprehensive Care), page J32; definition J31; per diem rules J30.

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