Z189 – Complex repair, digit, zone 1 repair, without soft tissue loss
OHIP Psychiatric Code — INTEGUMENTARY SYSTEM SURGICAL PROCEDURES · Schedule of Benefits
A complex repair of zone 1 of the digit is a repair of an injury without soft tissue loss that requires a minimum of 20 minutes of time to perform the repair procedure. The fee for Z189 includes removal of any foreign bodies in the wound, irrigation, and debridement when rendered.
When to Use
- Use Z189 for a complex laceration repair in zone 1 of the digit that requires at least 20 minutes of procedural time, provided there is no soft tissue loss.
- Use this code when the repair involves significant irrigation, debridement, or foreign body removal that extends the procedure time to the 20-minute threshold, distinguishing it from simple laceration repairs.
- Use Z189 when the complexity of the repair necessitates a higher level of surgical skill than a standard laceration repair but does not involve tissue advancement or grafting.
Common Pitfalls
- Billing Z189 alongside debridement codes like Z128, Z129, or Z114 is a common error; these services are considered inclusive of the Z189 fee.
- Failure to document the specific start and end times of the repair procedure in the patient record often leads to audit rejections, as the 20-minute minimum is a mandatory requirement.
- Attempting to bill Z189 for lacerations involving soft tissue loss or those requiring advancement flaps will result in rejection; these cases must be billed under the appropriate Musculoskeletal or Plastic Surgery repair codes.
Billing Tips
- Ensure your operative note explicitly states the duration of the repair and describes the complexity (e.g., extensive debridement or foreign body removal) to justify the 20-minute minimum.
- If the procedure is performed after hours or on weekends, remember to apply the appropriate E-series premiums (E409/E410) or Special Visit Premiums, as these are eligible in addition to the base Z189 fee.
Effective: April 1, 2026
M. Integumentary System Surgical Procedures
INTEGUMENTARY SYSTEM SURGICAL PROCEDURES
Surgical
Integumentary System Surgical Procedures
The minimum time requirements involved in the repair service must be documented in the patient's permanent medical record.
The time requirement includes time to perform the repair exclusive of time spent rendering any other separately billable service.
For digit tip amputations or a zone 1 injury with soft tissue loss that would requirement advancement, graft or other surgical method of closure, see specific listings for surgical repair in the Integumentary System or Musckuloskeletal System Surgical Procedures sections of this Schedule.
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