J322Standard O2 consumption and CO2 production
PULMONARY FUNCTION STUDIES · OTHER TERMS AND DEFINITIONS
No listed feeWhat this reference tells you
J322 identifies the Ontario insured service described as “Standard O2 consumption and CO2 production.” 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.