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Billing code

Z592A — Sigmoidoscopy with decompression of volvulus

Sigmoidoscopy for volvulus

Bill for sigmoidoscopy, with or without anoscopy, to decompress a volvulus.

Watch for: Add E746 when done outside hospital.

Code

Z592A

Description

Sigmoidoscopy with decompression of volvulus

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

Sigmoidoscopy, with or without anoscopy, with decompression of a volvulus.

What it covers

Z592 is sigmoidoscopy with or without anoscopy, with decompression of volvulus (S25).

Billing rules

• Add E746 when done outside hospital (S25).
• Z codes are independent operative procedures: if your major pre-operative visit was in the prior 12 months, only a partial assessment is payable before the procedure that day; if the major pre-operative visit is that day, no other assessment is payable before it (SP4).
• Under-16 age premiums (10–30%) apply to surgical procedures in Parts K to Z (GP64).

Often billed with

• E746 when performed outside hospital (S25).

Related codes: Z535, Z536, E746, Z580, E641

Source: Schedule of Benefits (July 1, 2026), Digestive System Surgical Procedures, Rectum, page S25.

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