Billing code
G515A — Open Circuit Indirect Calorimetry
Resting energy measurement
Bill G515 for open circuit indirect calorimetry measuring resting energy expenditure, including height, weight and skin-fold body fat.
Watch for: G700 does not apply to this code; it is payable in addition to a consultation or assessment.
| Provider | Specialist | Assistant | Anaesthetist | Non-anaesthetist |
|---|---|---|---|---|
| $46.30 | $0.00 | $0.00 | $0.00 | $0.00 |
- Code
- G515A
- Description
- Open Circuit Indirect Calorimetry
- FHO+ basket
- Not in the FHO+ base rate basket (Schedule 2 or 2B).
- Effective date
- Apr 1, 2025
- Termination date
- No end date
Explanation
Updated October 26, 2026
Open circuit indirect calorimetry to measure resting energy expenditure.
What it covers
G515 is open circuit indirect calorimetry in an isothermal environment using a ventilated hood. It includes height and weight, body fat measured with four skin folds, and resting energy expenditure 12 to 14 hours after a meal, measuring oxygen consumption and carbon dioxide (J43).
Billing rules
- Diagnostic and therapeutic procedures are payable in addition to a consultation or assessment, unless listed as included (J3).
- G515 is not marked (+), so the G700 sole-visit premium does not apply (J3, J43).
Related codes: G498, G494, G497, G513
Source: Schedule of Benefits (July 1, 2026), Diagnostic and Therapeutic Procedures, Endocrinology and Metabolism, page J43.
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