What are the billing rules for Z728A?

If the major pre-operative visit was in the previous 12 months, only a minor assessment (GP/FP) or partial assessment (specialist) is payable before the procedure that day; if the decision is made that day, that visit is billable but no other assessment before it (SP4). Anaesthesia by another physician: 6 basic units (C suffix) (V3).

What is Z728A often billed with?

A007 intermediate assessment at the visit where the decision to drain is made (GP4, SP4).

Why is Z728A rejected?

V23: OHIP questioned the number of services on the line. Z728 is one listed fee for the incision and drainage (V3), so check the count and that the code carries the A suffix for your own service. A2B: OHIP flagged Z728, a vaginal procedure, as not usual for the sex on the patient's OHIP record. Check the health number and patient details on the claim.

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Billing code

Z728A — Incision And Drainage Of Cyst, Abscess Or Haematoma

Q: What is OHIP billing code Z728A?

Incision and drainage of a vaginal cyst, abscess or haematoma. Vulvar, Bartholin or Skene's gland abscess is Z714/Z715.

Vaginal cyst or abscess drainage

Bill for incision and drainage of a cyst, abscess or haematoma of the vagina.

Watch for: A vulvar, Bartholin's or Skene's gland abscess is Z714 or Z715 instead.

Provider	Specialist	Assistant	Anaesthetist	Non-anaesthetist
$97.20	$0.00	$0.00	$95.76	$95.76

Code: Z728A
Description: Incision And Drainage Of Cyst, Abscess Or Haematoma
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

Incision and drainage of a vaginal cyst, abscess or haematoma. Vulvar, Bartholin or Skene's gland abscess is Z714/Z715.

What it covers

Z728 is incision and drainage of a cyst, abscess or haematoma of the vagina (V3). Abscess of the vulva, Bartholin or Skene's gland is Z714 (local anaesthetic) or Z715 (general anaesthetic), and marsupialization of a Bartholin's cyst or abscess is Z716 (V2).

As a Z code it is an independent operative procedure, payable in addition to an assessment (GP4).

Billing rules

If the major pre-operative visit was in the previous 12 months, only a minor assessment (GP/FP) or partial assessment (specialist) is payable before the procedure that day; if the decision is made that day, that visit is billable but no other assessment before it (SP4).
Anaesthesia by another physician: 6 basic units (C suffix) (V3).

Often billed with

A007 intermediate assessment at the visit where the decision to drain is made (GP4, SP4).

Common rejections

V23: OHIP questioned the number of services on the line. Z728 is one listed fee for the incision and drainage (V3), so check the count and that the code carries the A suffix for your own service.
A2B: OHIP flagged Z728, a vaginal procedure, as not usual for the sex on the patient's OHIP record. Check the health number and patient details on the claim.

Related codes: Z714, Z715, Z716, S712, S715, Z722

Source: Schedule of Benefits (July 1, 2026), Female Genital Surgical Procedures, Vagina, page V3; vulva V2.

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