What is OHIP billing code R311?

R311 is "Exostosis/cyst", an OHIP Radiology code from the Ontario Schedule of Benefits (Physician Services).

How much does R311 pay?

The current OHIP fee for R311 is $303.50, effective 2026-04-01, per the Ontario Schedule of Benefits.

How do I bill R311 to OHIP?

R311 is submitted through OHIP's MCEDT claims system, either directly or via billing software. SnapBill validates R311 claims against the Schedule of Benefits rules before submission.

What codes are related to R311?

Codes related to R311 in the Schedule of Benefits include R295, R253, R246, R210, R522, R523.

All codes

R311

R311 – Exostosis/cyst

OHIP Radiology Code — MUSCULOSKELETAL SYSTEM SURGICAL PROCEDURES · Schedule of Benefits

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Surgical excision of a benign bone growth (exostosis) or a fluid-filled sac (cyst) from the tibia or fibula bones in the lower leg. This service is eligible for payment to the surgeon (suffix A), as well as an assistant (suffix B) and anaesthetist (suffix C) based on unit calculations detailed in the Schedule of Benefits.

When to Use

Use R311 for the surgical excision of a symptomatic osteochondroma or benign exostosis specifically located on the tibia or fibula.
Use R311 for the excision of a benign bone cyst (e.g., unicameral or aneurysmal) involving the cortical or medullary bone of the tibia or fibula.
Use R311 when the procedure is limited to the excision of the lesion itself, rather than a more extensive procedure like a segmental resection or bone grafting requiring a separate code.

Common Pitfalls

Billing R311 for soft tissue cysts (e.g., ganglion or Baker's cyst) is incorrect; these require different musculoskeletal codes as R311 is specific to bone pathology.
Attempting to bill R311 alongside a more comprehensive procedure on the same bone can lead to rejection for 'unbundling' if the excision is considered an integral part of the primary surgery.
Failure to document the specific anatomical location (tibia or fibula) in the operative report can lead to audit recovery, as the code is strictly limited to these two bones.

Billing Tips

Ensure the operative report explicitly describes the removal of bone or a cyst from the tibia or fibula to support the use of R311 over generic excision codes.
If the procedure is performed on a patient under 16 years of age, remember to apply the appropriate age-based premium (e.g., 10% for ages 5-15) to the R311 base fee.

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Provider Fee$303.50

Surgical Assistant Fee$77.46

Anaesthetist Fee$95.76

Non-Anaesthetist Fee$95.76

Effective: April 1, 2026

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