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Billing code

R102A — Oncoplastic Breast Surgery - Level 1 Oncoplastic Breast Conserving Lumpectomy Or Partial Mastectomy For Malignancy

Level 1 oncoplastic lumpectomy

Bill R102 for a level 1 oncoplastic breast-conserving lumpectomy for malignancy, removing 15% or less of the breast with dual plane undermining.

Watch for: The operative report must document dual plane undermining and defect closure, and the resected volume must be 15% or less.

Code

R102A

Description

Oncoplastic Breast Surgery - Level 1 Oncoplastic Breast Conserving Lumpectomy Or Partial Mastectomy For Malignancy

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

Level 1 oncoplastic breast conserving lumpectomy or partial mastectomy for malignancy: 15% or less of the breast resected, with dual plane undermining.

What it covers

R102 is the level 1 oncoplastic breast conserving lumpectomy or partial mastectomy for malignancy (M26). It requires that the resected breast volume is 15% or less of the ipsilateral breast parenchyma, and that the operative report documents dual plane undermining and closure of the lumpectomy defect (M26).

It includes nipple undermining, nipple-areolar complex elevation or centralization, skin resection and glandular advancement when done (M26). Larger resections, or tumours in the upper inner quadrant or lower pole, are level 2 (R158); resections over 25% using reduction mammoplasty techniques are level 3 (R159) (M27).

Billing rules

• Only payable when the resected volume is 15% or less of the ipsilateral breast parenchyma and the operative report documents dual plane undermining and lumpectomy defect closure (M26).
• Not payable when a second surgeon does another reconstructive procedure on the same breast the same day, or when the procedure is part of a pre-planned staged breast reconstruction (M27).
• R143 contralateral balancing mastopexy or reduction isn't payable on the same day as R102 (M27).
• Add-ons: E525 after wire or radioactive seed localization, E505 limited axillary node sampling, or E546 axillary node dissection up to the axillary vein (M26).
• E505 isn't payable in addition to Z427 sentinel node biopsy; Z427 is payable with E546 only when a frozen section report shows micrometastases (M25).
• Other procedures under the same anaesthetic: the major procedure is paid in full and the others at 85%, unless the Schedule says otherwise (SP2).
• The major pre-operative visit is billed separately; the surgeon can't bill a hospital or day care admission assessment unless it is that visit (GP4, SP2).
• Marked #: premises, equipment, supplies and personnel are not included in the fee (SP1, GP13).

Often billed with

• Z427 sentinel node biopsy per draining basin (R2), subject to the 85% rule for a second procedure under the same anaesthetic (SP2).
• E525 when the lesion was localized with a mammographic wire or radioactive seeds (M26).
• A034 General Surgery partial assessment, which is only billable on the surgery day if it is the major pre-operative visit (GP4, SP2).

Related codes: R158, R159, R111, R107, E525, E505, E546, Z427

Source: Schedule of Benefits (July 1, 2026), Integumentary System Surgical Procedures, Operations of the Breast, Oncoplastic Breast Surgery, pages M26 to M27; Surgical Preamble SP1 and SP2

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