Z237 – Tenotomy - closed - one
OHIP Psychiatric Code — MUSCULOSKELETAL SYSTEM SURGICAL PROCEDURES · Schedule of Benefits
This procedure, listed under the Musculoskeletal System section for the knee, involves the surgical cutting of a single tendon using a closed technique (without a large open incision). It is typically performed to relieve tension or correct a deformity. This service is for a single tenotomy. For multiple tenotomies performed during the same session, refer to Z238.
When to Use
- Use Z237 when performing a percutaneous release of a single tendon, such as a hamstring or adductor release, to correct a specific contracture.
- Select Z237 for a single-site closed tenotomy procedure; if you perform the same procedure on a second tendon during the same operative session, you must switch to Z238.
Common Pitfalls
- Billing Z237 multiple times for multiple tendons will result in a rejection or audit recovery; always use Z238 for multiple tenotomies.
- Attempting to bill an assistant using a B-suffix code will be rejected, as this procedure does not have an assigned assistant fee; use M400B only if you have prior approval for independent consideration.
Billing Tips
- Ensure your operative note clearly specifies that the procedure was performed via a closed technique to justify the use of Z237 over open surgical codes.
- Remember that the anaesthesia fee is calculated as 6 base units plus time, so ensure your anaesthesiologist is aware of this specific base unit allocation to avoid billing discrepancies.
Effective: April 1, 2025
N. Musculoskeletal System Surgical Procedures
MUSCULOSKELETAL SYSTEM SURGICAL PROCEDURES
Surgical
Musculoskeletal System Surgical Procedures
The anaesthesia fee for this service is calculated based on 6 base units plus time units.
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