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Billing code

Z400A — Duodenoscopy (not To Be Claimed If Z399 And/or Z400 Performed On Same Patient Within 3 Months)

Upper endoscopy for bleeding

Bill for oesophagoscopy-gastroscopy, with or without duodenoscopy, done for active bleeding; treating the bleed uses add-ons E797 or E798.

Watch for: Use elective Z399 when there is no active bleeding; duodenoscopy Z560 isn't payable within 3 months of Z399 or Z400.

Code

Z400A

Description

Duodenoscopy (not To Be Claimed If Z399 And/or Z400 Performed On Same Patient Within 3 Months)

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

Upper endoscopy (oesophagoscopy-gastroscopy, with or without duodenoscopy) for active bleeding.

What it covers

Z400 is an oesophagoscopy-gastroscopy, with or without duodenoscopy, done for active bleeding (S7). The elective procedure is Z399 (S7).

Treatment of the bleeding is billed with add-ons: E797 for uncomplicated bleeding by any technique, or E798 for complicated bleeding in a haemodynamically unstable patient with active bleeding during endoscopy (S7).

Billing rules

• Duodenoscopy Z560 can't be claimed if Z399 or Z400 was done for the same patient within 3 months (S15).
• No assistant fee is payable (Asst nil); anaesthesia is 4 basic units (S7).
• Laryngoscopy Z292 at the same time is not payable unless done for suspected laryngeal disease; those claims go to manual review with a written explanation (S8, S11).
• Patients under 16 get an age premium of 10% to 30% (GP64).
• It is a Z-code (IOP): if you made the decision to scope at a visit in the past 12 months, only a partial assessment (specialist) or minor assessment (family physician) is payable that day before it (SP4 §13).

Often billed with

• E797 uncomplicated or E798 complicated upper GI bleeding management (S7).
• E702 multiple biopsies of a specific lesion (S7).

Related codes: Z399, E797, E798, Z527, Z560, E702

Source: Schedule of Benefits (July 1, 2026), Digestive System Surgical Procedures, Oesophagus, page S7.

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