American Health Information Management Association (AHIMA) Certification Practice Exam

What is the ICD-9-CM diagnosis code for atypical ductal hyperplasia?

1. 610.1

2. 610.4

3. 610.8

4. 610.9

The correct answer is: 610.8

The ICD-9-CM coding system categorizes various medical diagnoses, and atypical ductal hyperplasia is specifically classified under a code that addresses changes in breast tissue. The codes relating to breast conditions generally focus on specific classifications of benign and malignant conditions impacting the breast. The correct code for atypical ductal hyperplasia falls into a category that designates these specific histological changes. In this case, 610.8 is utilized to denote atypical ductal hyperplasia, as it encompasses atypical conditions that are not fully malignant but do exhibit abnormal cell changes. The other codes in this range refer to different diagnoses and are not pertinent to atypical ductal hyperplasia, reflecting more generalized breast conditions or other specific types of hyperplasia not associated with atypical changes. This illustrates the importance of precise coding in correspondence to the specific diagnosis for accurate medical billing and health record management.