R643 – Ulna lower end
OHIP Radiology Code — MUSCULOSKELETAL SYSTEM SURGICAL PROCEDURES · Schedule of Benefits
As a surgical procedure, R643 is subject to the general rules for surgical procedures outlined in the OHIP Schedule of Benefits. This includes eligibility for various premiums such as age-based premiums for patients under 16 (), after-hours premiums for the surgeon (E409, E410), assistant (E400B, E401B), and anaesthesiologist (E400C, E401C), and the trauma premium (E420). Assistant and anaesthesia services are calculated using basic units plus time-based units. The use of a second surgical assistant requires authorization from a medical consultant (). The specific description for this code is not available in the provided context.
When to Use
- Use R643 for surgical procedures specifically involving the distal ulna, such as open reduction and internal fixation (ORIF) of a distal ulna fracture.
- Use this code for distal ulna osteotomies or other corrective surgical interventions performed on the lower end of the ulna.
Common Pitfalls
- Do not bill R643 in conjunction with other musculoskeletal codes if the procedure is considered an integral part of a more comprehensive surgery, as this may trigger a 'duplicate or included service' rejection.
- Failing to document the Injury Severity Score (ISS) when attempting to claim the E420 trauma premium will lead to automatic rejection of the premium portion of the claim.
- Attempting to bill for a second surgical assistant without prior authorization from a medical consultant will result in the denial of the second assistant's fee, as R643 is not on the pre-approved list.
Billing Tips
- Ensure that the surgical report clearly distinguishes the procedure from proximal or mid-shaft ulna work to justify the use of R643 over other musculoskeletal codes.
- When performing R643 after hours, ensure the start time of the procedure is accurately recorded to support the application of E409 or E410 premiums.
Effective: April 1, 2025
N. Musculoskeletal System Surgical Procedures
MUSCULOSKELETAL SYSTEM SURGICAL PROCEDURES
Surgical
Musculoskeletal System Surgical Procedures
All insured services must be documented in appropriate records that establish:
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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