J311B – Functional Residual Capacity by Gas Dilution Method - Technical Component
OHIP Cardio-Thoracic Surgery Code — Functional Residual Capacity · Schedule of Benefits
This is the technical component ('H' fee) for the measurement of functional residual capacity by the gas dilution method. It covers the use of the equipment, supplies, and personnel to perform the test. Per , the technical component of a diagnostic service is claimed using the base fee code with a 'B' suffix. This service cannot be claimed on the same day for the same patient as J307. The technical component is not eligible for payment if rendered outside of a hospital ().
When to Use
- Use J311B when billing the technical component for a functional residual capacity measurement performed via gas dilution in a hospital setting.
- Select this code when the facility provides the equipment and technician for the test, while the professional interpretation is billed separately under J311C.
Common Pitfalls
- Claiming J311B for tests performed in a private clinic or office, as the technical component is strictly ineligible for payment outside of a hospital facility.
- Submitting J311B on the same day as J307, which will trigger an automatic rejection due to the explicit billing restriction between these pulmonary function services.
Billing Tips
- Ensure the professional component (J311C) is billed by the physician interpreting the results to capture the full value of the service, as J311B only covers the technical overhead.
Effective: January 1, 2025
Pulmonary Function Studies
Functional Residual Capacity
Diagnostic
Pulmonary Function Studies, Diagnostic and Therapeutic Procedures
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