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J313
J313 – Mixed venous PCO2, by the rebreathing method
OHIP Cardio-Thoracic Surgery Code · Schedule of Benefits
Mixed venous , by the rebreathing method
When to Use
- Use J313 when performing a standalone rebreathing study to estimate mixed venous PCO2 for diagnostic purposes in patients with suspected pulmonary vascular disease or complex dyspnea.
- Use this code when the clinical objective is specifically to assess gas exchange efficiency via rebreathing, provided it is not part of a broader exercise study.
Common Pitfalls
- Billing J313 in conjunction with J316 will result in an automatic rejection, as J313 is considered a constituent element of the comprehensive J316 procedure.
- Submitting the professional component (suffix C) without a physician-signed interpretive report will trigger an audit recovery, as automated computer printouts do not satisfy the professional component requirement.
Billing Tips
- Ensure the technical component (suffix B) is not billed if the patient is an inpatient or admitted within 24 hours, as this is strictly prohibited under the payment rules for Stage II pulmonary function studies.
Provider Fee$0.00
Surgical Assistant Fee$13.10
Anaesthetist Fee$4.70
Non-Anaesthetist Fee$4.70
Effective: April 1, 2026
Since Apr 2005, this fee has decreased NaN% vs 54.8% CPI inflation
Service Type
Pulmonary Function Study
Code Classes
Diagnostic Procedure
A permanent record of the study results must be maintained.
A written, signed, and dated interpretive report must be prepared and transmitted to the referring provider.
Listed under Stage II Pulmonary Function Studies.
The technical component H is not eligible for payment if the patient is an in-patient or is admitted to the same hospital within 24 hours for the same condition.
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