J311C – Functional Residual Capacity by Gas Dilution Method - Professional Component
OHIP Cardio-Thoracic Surgery Code — Functional Residual Capacity · Schedule of Benefits
This is the professional component ('P' fee) for the measurement of functional residual capacity by the gas dilution method. It covers the physician's interpretation of the test results. Per , the professional component of a diagnostic service is claimed using the base fee code with a 'C' suffix. This service cannot be claimed on the same day for the same patient as J307.
When to Use
- Use J311C when you are billing specifically for the professional interpretation of a gas dilution functional residual capacity test performed in a facility where the technical component is billed separately.
- Select J311C when the clinical documentation requires a formal physician review of lung volume measurements that cannot be captured by simple spirometry codes like G578.
Common Pitfalls
- Submitting J311C on the same day as J307 will result in an automatic rejection due to the explicit billing restriction in the Schedule of Benefits.
- Claiming J311C when the test was performed as part of a comprehensive pulmonary function panel that already includes the professional component in a global fee code can lead to audit recovery for duplicate billing.
Billing Tips
- Ensure your clinical notes explicitly document the interpretation of the gas dilution data to support the professional component claim during a potential audit.
Effective: January 1, 2025
Pulmonary Function Studies
Functional Residual Capacity
Diagnostic
Pulmonary Function Studies, Diagnostic and Therapeutic Procedures
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