Unspecified benign mammary dysplasia of left breast

This code signifies a non-cancerous, abnormal development or growth of breast tissue in the left breast, where the specific type of dysplasia is not documented. It indicates a benign change in the breast architecture without further characterization of the cellular or structural alterations.

Use this code when a physician documents "benign mammary dysplasia, left breast" without specifying the type (e.g., fibrocystic change, adenosis, sclerosing adenosis). This code is appropriate when imaging or clinical examination reveals benign changes, but a definitive histological diagnosis of a specific benign condition is not available or not documented.

• Do not use this code if a more specific type of benign mammary dysplasia is documented (e.g., fibrocystic disease).
• Ensure the documentation clearly specifies the left breast; otherwise, an unspecified laterality code should be considered.
• This code is often used when a patient presents with breast pain or a palpable mass that is subsequently determined to be benign but not further classified.