Atrophy of breast

This code represents a decrease in the size of breast tissue due to a reduction in cell size or number, leading to a diminished breast volume. It can affect one or both breasts and is often associated with hormonal changes or aging.

Use this code when documentation explicitly states "atrophy of breast" or describes significant breast tissue reduction not due to mastectomy or hypoplasia. This code is appropriate for age-related involutional changes, post-menopausal atrophy, or atrophy secondary to certain medical conditions.

• Differentiate from hypoplasia (underdevelopment) or aplasia (absence) of the breast, which are congenital conditions.
• Do not use for breast tissue loss due to surgical removal (e.g., mastectomy).
• Consider any underlying causes documented, such as hormonal deficiencies, and code them as primary if appropriate.