J303C – Extra pulmonary airways resistance by plethysmography
OHIP Cardio-Thoracic Surgery Code — PULMONARY FUNCTION STUDIES · Schedule of Benefits
Measures extrapulmonary airways resistance by plethysmography. This service is comprised of two distinct components that are claimed separately: - Technical Component ('H' fee): Covers the use of equipment, supplies, and personnel for the test itself. As per , this is claimed using the billing code with a 'B' suffix (e.g., J303B). - Professional Component ('P' fee): Covers the physician's interpretation of the results and report. As per , this is claimed using the billing code with a 'C' suffix (e.g., J303C).
When to Use
- Use J303C when providing a formal written interpretation and report for plethysmography studies to assess upper airway obstruction, distinct from standard spirometry (J001).
- Use J303B when the facility or physician-owned equipment performs the technical data acquisition for extrapulmonary airway resistance, ensuring the quality assurance documentation requirements are met.
Common Pitfalls
- Submitting J303 without the B or C suffix will result in immediate rejection, as the base code is not a billable service on its own.
- Failing to maintain a formal quality assurance log for the technical component (J303B) is a common audit failure point, as the physician is responsible for the entire data acquisition process.
- Billing J303C in conjunction with a consultation or assessment code for the same patient on the same day without clear documentation of separate medical necessity for both services.
Billing Tips
- Ensure the referral source is documented as a physician, nurse practitioner, or oral/maxillofacial surgeon, as J303 is strictly a referred service under GP11 rules.
- When billing J303B, ensure the claim reflects the facility's role in the technical process, as the physician claiming the B-suffix assumes full liability for the accuracy of the data acquisition and record-keeping.
Effective: April 1, 2025
H. Pulmonary Function Studies
PULMONARY FUNCTION STUDIES
Diagnostic
Pulmonary Function Studies, Diagnostic and Therapeutic Procedures
For the technical component, the physician must maintain documentation that describes the process by which the physician monitors quality assurance in accordance with professional standards. The physician submitting the claim is responsible for the complete quality assurance process for all elements of the technical component of the service, including data acquisition, reporting, and record keeping.
All insured services must be documented in the patient's medical record to establish that: 1. an insured service was provided; 2. the service for which the account is submitted is the service that was rendered; and 3. the service was medically necessary.
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