Billing code
M054A — Ethmoidectomy/antrostomy - Intranasal Ethmoidectomy Including Maxillary Antrostomy, With Endoscope Unilateral (not Eligible For Payment With M061 Or M054)
Maxillary antrostomy, one side
Bill M054 for an intranasal maxillary antrostomy on one side, done by endoscopic or endonasal approach.
Watch for: Not payable with M083; when an ethmoidectomy is also done, the antrostomy is included in M083.
| Provider | Specialist | Assistant | Anaesthetist | Non-anaesthetist |
|---|---|---|---|---|
| $123.70 | $0.00 | $77.46 | $159.60 | $159.60 |
- Code
- M054A
- Description
- Ethmoidectomy/antrostomy - Intranasal Ethmoidectomy Including Maxillary Antrostomy, With Endoscope Unilateral (not Eligible For Payment With M061 Or M054)
- 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
Intranasal maxillary antrostomy, one side, by endoscopic or endonasal approach.
What it covers
M054 is intranasal maxillary antrostomy, unilateral, by endoscopic or endonasal approach (P6).
Endoscopic ethmoidectomy (M083) may include maxillary antrostomy (P6).
Billing rules
- M083 is not payable with M054; if an ethmoidectomy is also done, the antrostomy is part of M083 (P6).
- Listed surgical fees are unilateral unless stated (SP4).
- More than one procedure under the same anaesthetic: 100% for the major procedure and 85% for the others, including bilateral procedures, unless the Schedule says otherwise (SP2).
- Surgical procedures on children under 16 get the age premium (10–30% by age) (GP64).
Common rejections
- ADH: OHIP describes this as 'Cannot be billed together': M083 with M054 (P6).
Related codes: M083, E844, Z318, Z350
Source: Schedule of Benefits (July 1, 2026), Respiratory Surgical Procedures, Accessory Nasal Sinuses, page P6.
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