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Billing code

Z729A — Cryoconization, Electroconization Or Co2 Laser Therapy With Or Without Curettage For Premalignant Lesion (dysplasia Or Carcinoma In Situ), Outpatient Procedure

Cervical conization, out-patient

Bill for out-patient cryoconization, electroconization or CO2 laser treatment of cervical dysplasia or carcinoma in situ.

Watch for: Simple cryotherapy of the cervix is Z732, LEEP is Z766, and cone biopsy is S744.

Code

Z729A

Description

Cryoconization, Electroconization Or Co2 Laser Therapy With Or Without Curettage For Premalignant Lesion (dysplasia Or Carcinoma In Situ), Outpatient Procedure

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

Cryoconization, electroconization or CO2 laser therapy, with or without curettage, for cervical dysplasia or carcinoma in situ, as an out-patient.

What it covers

Z729 is cryoconization, electroconization or CO2 laser therapy, with or without curettage, for a premalignant lesion of the cervix (dysplasia or carcinoma in situ), done as an out-patient procedure (V6).

Billing rules

• Listed as an out-patient procedure (V6).
• Other conization codes: Z766 LEEP; S744 cone biopsy by any technique, with or without D&C (V6).
• Simple cryotherapy of the cervix is Z732, listed separately under Cauterization (V6).
• In composite operations (for example anterior and posterior repair with D&C, or with cauterization of the cervix and biopsy), only the fee for the major procedure(s) is paid (V1, rule 1).
• Z-codes are independent operative procedures (IOP). If the major pre-operative visit was in the previous 12 months, the only assessment payable before the IOP that day is a minor assessment (GP) or partial assessment (specialist); if the major pre-operative visit is the same day, no other assessment before the IOP is payable (SP4, §13).

Related codes: Z766, S744, Z732, Z724, Z731

Source: Schedule of Benefits (July 1, 2026), Female Genital Surgical Procedures, Cervix Uteri, page V6.

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