Atrophy of breast

This code represents a reduction in the size and mass of breast tissue due to a decrease in the number or size of cells. It signifies a non-neoplastic, degenerative change in the breast, often resulting in diminished breast volume and altered texture.

Use this code when documentation specifies breast atrophy, such as age-related involutional changes, post-menopausal breast tissue regression, or atrophy secondary to hormonal imbalances or certain medical treatments. Supporting documentation should clearly state "atrophy of breast" or describe findings consistent with tissue wasting.

• Differentiate from hypoplasia (underdevelopment) or aplasia (failure to develop), which are congenital conditions.
• Do not use for simple breast asymmetry or size reduction without explicit documentation of atrophy.
• Consider sequencing this code as a secondary diagnosis if the atrophy is a consequence of another underlying condition or treatment.