Fibrosclerosis of left breast

This code represents a pathological hardening and scarring of the fibrous connective tissue within the left breast. This condition is characterized by an abnormal increase in fibrous tissue, leading to a firm or indurated feel upon palpation. It is a non-neoplastic process.

Use this code when documentation specifically indicates fibrosclerosis affecting the left breast. This diagnosis is often made based on imaging findings (e.g., mammography, ultrasound) showing architectural distortion or increased density, and confirmed by biopsy demonstrating excessive fibrous tissue. Ensure the laterality is clearly specified as left.

• Always confirm laterality; do not default to unspecified if left is documented.
• Distinguish from other benign breast conditions like fibroadenoma or mastopathy.
• Ensure documentation supports the "sclerosis" aspect, not just general fibrosis.