Oregon Subscriber
Answer: Yes. The term atypia suggests that the neoplasm is in transition from benign to malignant, which is what uncertain behavior describes. The correct code, therefore, is 238.3 (neoplasm of uncertain behavior; breast). Code 611.1 (hypertrophy of breast) should be used for females who experience abnormal breast enlargement and for males with gynecomastia, the visible or palpable development of breast tissue.