ICD-10-CM > N00-N99 > N60-N65 > N60 > N60.2 N60.2 Fibroadenosis of breast Non-Billable/Non-Specific Applicable To Adenofibrosis of breast Type 2 Excludes fibroadenoma of breast (D24.-) Codes N60.21Fibroadenosis of right breastN60.22Fibroadenosis of left breastN60.29Fibroadenosis of unspecified breast