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E539
E539 – Osteotomy of malleolus
OHIP Surgical Assists Code — MUSCULOSKELETAL SYSTEM SURGICAL PROCEDURES · Schedule of Benefits
This is an add-on surgical procedure, billed in addition to R503 (Arthrotomy, Ankle - removal of loose body, etc.), to account for the additional work of performing an osteotomy of the malleolus during the same operative session. It is listed under the Musculoskeletal System section for Foot and Ankle procedures.
When to Use
- Use E539 when performing a malleolar osteotomy specifically to gain surgical access for an ankle arthrotomy (R503) to remove a deep-seated loose body that cannot be reached via standard arthrotomy portals.
- Apply this code when the osteotomy is a planned, necessary component of the surgical approach to facilitate the primary procedure defined under R503.
Common Pitfalls
- Do not bill E539 as a standalone procedure; it is strictly an add-on code and will be rejected if submitted without an associated R503 claim.
- Avoid billing E539 for routine surgical exposure or simple arthroscopic portals, as it is intended for formal osteotomy requiring subsequent fixation.
Billing Tips
- Ensure the operative report clearly details the necessity of the malleolar osteotomy to access the joint space, as this justifies the additional fee over the base R503 procedure.
Provider Fee$117.85
Effective: April 1, 2025
Category
N. Musculoskeletal System Surgical Procedures
Subcategory
MUSCULOSKELETAL SYSTEM SURGICAL PROCEDURES
Service Type
Surgical
Code Classes
Musculoskeletal System Surgical Procedures
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