ICD-10-PCS Billable Code

0HBT0ZX

Excision Breast, Right to Diagnostic with No Device, Open Approach

Procedural Specifications

Clinical Axis Detail Definition
Section0 Medical and Surgical
Body SystemH Skin and Breast
OperationB Excision
Body PartT Breast, Right
Approach0 Open
DeviceZ No Device
QualifierX Diagnostic

Operation Definition

Cutting out or off, without replacement, a portion of a body part

Procedure Overview

Excision procedures remove a portion of skin or breast tissue without replacing it, and this family spans everything from a shave biopsy of a suspicious mole to a lumpectomy removing a breast tumor with a margin of surrounding tissue. The common thread is that a defined piece of tissue, not the entire organ or structure, is cut away and typically sent to a pathology lab for examination.

Patients most often encounter this family when a mole, cyst, or lump needs to be evaluated or treated, or when a breast biopsy is needed to characterize a finding seen on imaging. Because only part of the body part is taken, the surrounding skin or breast tissue remains intact, which distinguishes these procedures from more extensive surgery that removes an entire structure.

Anatomy & Axis Detail

Breast, Right

The right breast consists of glandular, fibrous, and fatty tissue supported by Cooper's ligaments and is excised to remove palpable masses, biopsy-proven fibroadenomas, or areas of atypical or malignant tissue identified on imaging, most often in the context of a lumpectomy for early-stage cancer. Excision here removes a discrete portion of breast tissue while preserving the remaining gland and skin envelope, distinguishing it from resection, which would take an entire lobe, or mastectomy-level procedures that remove the whole breast. Margin status is critical and often drives re-excision if pathology shows tumor at the cut edge. Surgeons may place clips to guide future radiation planning. Coding depends on confirming laterality and that the procedure removed a portion of breast parenchyma rather than the nipple, skin, or entire gland.

Approach: Open

Open approach means the surgeon cuts through skin, mucous membrane, or other tissue layers to physically expose the target site to view before performing the procedure. It gives direct visualization and hands-on access, distinguishing it from Percutaneous approaches where instruments pass through a small puncture without exposing the site. Open is typical for procedures needing wide access, such as most laparotomies.

Qualifier: Diagnostic

Applied chiefly to Excision, this qualifier marks that tissue was removed specifically for diagnostic purposes, i.e., a biopsy intended for pathologic evaluation rather than to treat disease. It distinguishes biopsy-type excisions from therapeutic excisions of the same body part, which are coded without this qualifier even though the physical technique may be identical.

Coding & Documentation

Documentation should describe the amount of tissue removed, any margins taken, and whether the intent was diagnostic (an excisional biopsy) or therapeutic. Coders must pay close attention to whether the note describes removal of only part of the breast or skin versus the entire body part, since removing an entire breast is coded to Resection rather than Excision even though both involve cutting tissue away. A common mistake is coding a partial mastectomy or wide local excision as Resection out of habit, or conversely under-coding a case that actually removed the whole breast as Excision.

Commonly Confused With

ResectionResection is the procedure family most easily confused with Excision, and the deciding factor is simply how much of the body part was removed: any portion is Excision, the entire body part is Resection.
ExtirpationExtirpation is also sometimes conflated with Excision, particularly during debridement, since excisional debridement of dead tissue is coded as Excision while nonexcisional scraping or washing away of necrotic material is Extirpation.