G4001st day
DIAGNOSTIC AND THERAPEUTIC PROCEDURES · CRITICAL CARE (INTENSIVE CARE AREA)
$223.10What this reference tells you
G400 identifies the Ontario insured service described as “1st day.” The listed fee and rules are reference data; the clinical record must support the service actually performed.
Before using this code
Confirm the current Ministry publication, the patient and provider context, the date of service, and documentation supporting the claim. A searchable reference does not establish eligibility or guarantee payment.