< Billing codes

Billing code

Z304A — Nasal polypectomy – single

Single nasal polyp removal

Bill for removing a single nasal polyp.

Watch for: Use Z305 for multiple polyps or removal under general anaesthetic; add E839 when a flexible endoscope is used.

ProviderSpecialistAssistantAnaesthetistNon-anaesthetist
$21.00$0.00$0.00$0.00$0.00
Code
Z304A
Description
Nasal polypectomy – single
FHO+ basket
Not in the FHO+ base rate basket (Schedule 2 or 2B).
Effective date
Apr 1, 2025
Termination date
No end date

Explanation

Updated October 26, 2026

Removal of a single nasal polyp.

What it covers

Z304 is removal of a single nasal polyp (P1). Multiple polyps, or removal under general anaesthetic, is Z305 (unilateral) (P1).

Billing rules

  • Add E839 when done with a flexible endoscope (P1).
  • Use Z305 for multiple polyps or general anaesthetic (P1).
  • Z codes are independent operative procedures (IOP), payable in addition to an assessment. If you made the decision to operate in the past 12 months, only a partial assessment (specialist) or minor assessment (GP) is payable before the IOP that day; if the decision is the same day, no other assessment before it is paid (GP4, SP4).

Often billed with

  • E839 flexible endoscope (P1).

Related codes: Z305, Z308, E839, Z309

Source: Schedule of Benefits (July 1, 2026), Respiratory Surgical Procedures, Nose, page P1.

APEX checks every paid claim against the Schedule of Benefits and flags codes billed below what the visit qualified for. See how APEX works · Pricing