Genetic susceptibility to malignant neoplasm of breast

This code indicates a patient has a heightened genetic predisposition to developing breast cancer. This susceptibility is identified through genetic testing, revealing specific inherited mutations that increase the risk of malignancy. It signifies a genetic risk factor, not an active cancer diagnosis.

Apply this code when genetic testing confirms a mutation (e.g., BRCA1, BRCA2, PALB2) that significantly increases the lifetime risk of breast cancer in an asymptomatic individual. It is appropriate for screening, counseling, and surveillance encounters related to this elevated genetic risk. Do not use this code if a breast malignancy is already present.

• Always sequence this code as a secondary diagnosis when a primary reason for the encounter (e.g., screening mammogram, genetic counseling) is documented.
• Ensure supporting documentation clearly states the genetic mutation identified and its link to breast cancer susceptibility.
• Do not use this code for a personal history of breast cancer; use codes from category Z85 for that scenario.