What are the billing rules for Z084A?

Use Z084 only when the wound extends into tendon, ligament, bursa or bone; two or more such wounds are one Z085 (M10). Only payable when the physician performs at least 10 minutes of debridement, personally (M10). The chart must record the time spent and document the debridement of the lesion (M10).

What is Z084A often billed with?

E542 when the debridement is done in the office (M10). A007 intermediate assessment at the visit where the decision to debride is made (GP4, SP4).

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Billing code

Z084A — Debridement Of Wound(s) And/or Ulcer(s) Extending Into Any Of The Following Structures: Tendon, Ligament, Bursa And/or Bone - One

Q: What is OHIP billing code Z084A?

Debridement of one wound or ulcer reaching tendon, ligament, bursa or bone. Needs at least 10 minutes of debridement by the physician personally.

Deep debridement of one wound

Bill for debriding one wound or ulcer reaching tendon, ligament, bursa or bone, with at least 10 minutes done personally.

Watch for: Use it only when the wound reaches tendon, ligament, bursa or bone; two or more such wounds are one Z085.

Provider	Specialist	Assistant	Anaesthetist	Non-anaesthetist
$65.75	$0.00	$0.00	$0.00	$0.00

Code: Z084A
Description: Debridement Of Wound(s) And/or Ulcer(s) Extending Into Any Of The Following Structures: Tendon, Ligament, Bursa And/or Bone - One
FHO+ basket: Not in the FHO+ base rate basket (Schedule 2 or 2B).
Effective date: Apr 1, 2026
Termination date: No end date

Explanation

Updated October 26, 2026

Debridement of one wound or ulcer reaching tendon, ligament, bursa or bone. Needs at least 10 minutes of debridement by the physician personally.

What it covers

Z084 is debridement of one wound or ulcer extending into tendon, ligament, bursa and/or bone (M10). Two or more such wounds are Z085; wounds into subcutaneous tissue only are Z080 to Z083 (M10).

It includes applying any necessary dressing (M10).

Billing rules

Use Z084 only when the wound extends into tendon, ligament, bursa or bone; two or more such wounds are one Z085 (M10).
Only payable when the physician performs at least 10 minutes of debridement, personally (M10).
The chart must record the time spent and document the debridement of the lesion (M10).
Not payable with laceration repair (Z154, Z175–Z177, Z179, Z190–Z192) or complex laceration repair (Z187–Z189) (M10).
Not payable in addition to a surgical procedure unless complications need care beyond the usual post-operative care (M10).
Add E542 when performed outside hospital (M10).

Often billed with

E542 when the debridement is done in the office (M10).
A007 intermediate assessment at the visit where the decision to debride is made (GP4, SP4).

Related codes: Z085, Z080, Z081, Z083, E542

Source: Schedule of Benefits (July 1, 2026), Integumentary System Surgical Procedures, Skin and Subcutaneous Tissue, Wound and ulcer debridement, page M10

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