What are the billing rules for Z106A?

Bill under local anaesthetic only; with general anaesthetic use Z107, with E515 when it is the sole procedure in an operating room outside the emergency department (M1). Add E542 when performed outside hospital (M1). If you did the major pre-operative visit in the previous 12 months, only a minor assessment (GP/FP) or partial assessment (specialist) is payable before the drainage that day; if the decision is made at that day's visit, no other assessment before the IOP (SP4).

What is Z106A often billed with?

A034 or A035 General Surgery partial assessment or consultation at the visit where the decision to drain is made (GP4, SP4). U990 or U991 hospital out-patient special visit premiums for a non-elective drainage on a special visit that meets the Table II rules (SP2, GP65, GP71). E542 when done in the office (M1).

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Billing code

Z106A — Abscess, Haematoma I&D ischiorectal/pilonidal

Q: What is OHIP billing code Z106A?

Incision and drainage of an ischiorectal or pilonidal abscess or haematoma under local anaesthetic. Under general anaesthetic, bill Z107.

Drain pilonidal or ischiorectal abscess

Bill for incision and drainage of an ischiorectal or pilonidal abscess or haematoma under local anaesthetic.

Watch for: Under general anaesthetic, bill Z107 instead; add E542 outside hospital.

Provider	Specialist	Assistant	Anaesthetist	Non-anaesthetist
$48.60	$0.00	$0.00	$0.00	$0.00

Code: Z106A
Description: Abscess, Haematoma I&D ischiorectal/pilonidal
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 an ischiorectal or pilonidal abscess or haematoma under local anaesthetic. Under general anaesthetic, bill Z107.

What it covers

Z106 is incision and drainage of an ischiorectal or pilonidal abscess or haematoma under local anaesthetic (M1). The same under general anaesthetic is Z107, and a perianal abscess is Z104 (local) or Z105 (general) (M1).

As a Z code it is an independent operative procedure, payable in addition to an assessment (GP4). Excision or marsupialization of the pilonidal cyst itself is R035 (M4).

Billing rules

Bill under local anaesthetic only; with general anaesthetic use Z107, with E515 when it is the sole procedure in an operating room outside the emergency department (M1).
Add E542 when performed outside hospital (M1).
If you did the major pre-operative visit in the previous 12 months, only a minor assessment (GP/FP) or partial assessment (specialist) is payable before the drainage that day; if the decision is made at that day's visit, no other assessment before the IOP (SP4).
For a non-elective procedure done on a special visit, bill the consultation or assessment, the special visit premium and the procedure (SP2).
FHO: not in basket (not listed in Schedule 2), but counts toward the Schedule 4 special payment for office procedures done in your office for enrolled patients (Agreement pp.75-82, p.67 §8.7, p.94).

Often billed with

A034 or A035 General Surgery partial assessment or consultation at the visit where the decision to drain is made (GP4, SP4).
U990 or U991 hospital out-patient special visit premiums for a non-elective drainage on a special visit that meets the Table II rules (SP2, GP65, GP71).
E542 when done in the office (M1).

Related codes: Z107, Z104, Z105, Z101, R035, E542

Source: Schedule of Benefits (July 1, 2026), Integumentary System Surgical Procedures, Skin and Subcutaneous Tissue, Abscess or haematoma - Local anaesthetic, page M1; Surgical Preamble SP2, SP4; FHO Agreement 2026-04 pp.67, 94

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