Unspecified lump in the left breast, overlapping quadrants

This code signifies the presence of a palpable, undefined mass or thickening in the left breast that extends across more than one distinct quadrant. It indicates that the specific nature or etiology of the lump has not yet been determined through diagnostic workup.

Use this code when documentation clearly identifies a lump in the left breast, and its location is described as overlapping multiple quadrants, but further diagnostic information (e.g., benign, malignant, cyst) is pending or unknown. This is appropriate for initial encounters where a breast lump is identified but not yet fully characterized.

• Ensure the documentation specifies "left breast" and "overlapping quadrants" for accurate code assignment.
• Do not use this code if the lump is definitively located within a single quadrant or if a more specific diagnosis (e.g., fibroadenoma, cyst, malignancy) has been established.
• Consider using this code as a primary diagnosis when a patient presents with a new, undiagnosed breast lump requiring further investigation.