Diffuse cystic mastopathy

This code represents a benign breast condition characterized by widespread cystic changes and fibrous tissue proliferation within the mammary glands. It is a common cause of breast lumps, pain, and tenderness, often fluctuating with the menstrual cycle.

Use this code when documentation clearly indicates a diagnosis of diffuse cystic mastopathy, also known as fibrocystic breast disease or fibrocystic changes, affecting the breast tissue broadly. This diagnosis is typically made based on clinical examination, imaging (mammography, ultrasound), and sometimes biopsy results confirming diffuse cystic and fibrous alterations.

• Differentiate from localized cysts (e.g., simple breast cyst) which would be coded differently.
• Ensure documentation specifies "diffuse" or "generalized" involvement rather than a single, isolated cyst.
• Consider additional codes for specific symptoms like breast pain (mastalgia) if documented and not inherent to the diagnosis.