< Billing codes

Billing code

Z770A — Endometrial sampling

Endometrial sampling

Bill for endometrial sampling; an assessment can be billed in addition.

Watch for: Add E542 outside hospital, but E542 and the E432 pelvic exam add-on can't both be billed.

Code

Z770A

Description

Endometrial sampling

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

Endometrial sampling. Add E542 outside hospital and E861 for a paracervical block in the office; E542 can't go with E432.

What it covers

Z770 is endometrial sampling, listed under Incision or Excision, Corpus Uteri (V7). As a Z code it is an independent operative procedure, payable in addition to an assessment (GP4).

Hysteroscopy with uterine biopsy is a different code, Z583 (V7).

Billing rules

• Add E542 when Z770 is performed outside hospital (V7).
• E861 paracervical block (unilateral or bilateral) is payable in addition to endometrial sampling by the same physician in an office (V7).
• E432, the speculum pelvic exam add-on to A001 or A007, isn't payable with E542, so bill one or the other at the visit (A4).
• If the major pre-operative visit was in the previous 12 months, only a minor assessment (GP/FP) or partial assessment (specialist) is payable before the procedure that day (SP4).
• FHO: Z770A is on the Schedule 4 office-procedures list for enrolled patients (Agreement p.67 §8.7, p.97).

Often billed with

• A007 intermediate assessment at the visit where the decision to sample is made (GP4, SP4).
• E542 when performed outside hospital (V7).
• E861 paracervical block in the office (V7).

Related codes: E542, E861, Z583, Z582, S772, A007

Source: Schedule of Benefits (July 1, 2026), Female Genital Surgical Procedures, Corpus Uteri, Incision or Excision, page V7; E432 rule A4.

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