Billing code
Z105A — Abscess Or Haematoma - General Anaesthetic - Subcutaneous - Perianal
Drain perianal abscess, general anaesthetic
Bill for incision and drainage of a perianal abscess or haematoma under general anaesthetic.
Watch for: Under local anaesthetic bill Z104; add E515 only when it is the sole procedure in an operating room.
| Provider | Specialist | Assistant | Anaesthetist | Non-anaesthetist |
|---|---|---|---|---|
| $72.30 | $0.00 | $0.00 | $95.76 | $95.76 |
- Code
- Z105A
- Description
- Abscess Or Haematoma - General Anaesthetic - Subcutaneous - Perianal
- 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 perianal abscess or haematoma under general anaesthetic.
What it covers
Z105 is incision of a perianal abscess or haematoma under general anaesthetic, listed under Skin and Subcutaneous Tissue (M1). The local anaesthetic version is Z104 (M1).
Billing rules
- Add E515 when the incision is the sole procedure, under general anaesthetic, in an operating room, and not in an emergency department or ED equivalent (M1).
- Under local anaesthetic the code is Z104 (M1). If no anaesthetic is needed, claim the local anaesthetic listing (SP5).
- General anaesthesia means any anaesthesia except topical anaesthesia or local infiltration (GP3).
- Marked #: premises, equipment, supplies and staff for the procedure itself are not included in the fee (SP1).
- As a Z-code (independent operative procedure), if the major pre-operative visit was in the previous 12 months, only a minor assessment (GP) or partial assessment (specialist) is payable before the procedure that day (SP4).
- Age premium applies for patients under 16 (GP64).
Often billed with
- E515 when it is the sole procedure under general anaesthetic in an operating room, not in an ED or ED equivalent (M1).
Related codes: Z104, Z107, Z106, Z102, Z172, E515
Source: Schedule of Benefits (July 1, 2026), Integumentary System Surgical Procedures, Skin and Subcutaneous Tissue, page M1.
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