Benign mammary dysplasia (N60) ICD-10-CM
The N60 code range covers benign mammary dysplasia with 29 ICD-10-CM diagnosis codes. 21 of them are billable and valid for claim submission in fiscal year 2027, and the category headers group them but cannot themselves be billed.
Includes
This note appears immediately under a three character code title to further define, or give examples of, the content of the category.
- fibrocystic mastopathy
Codes in the N60 Range 29 codes · 21 billable
- N60 Benign mammary dysplasiaNon-billable
- N60.0 Solitary cyst of breastNon-billable
- N60.01 Solitary cyst of right breast
- N60.02 Solitary cyst of left breast
- N60.09 Solitary cyst of unspecified breast
- N60.1 Diffuse cystic mastopathyNon-billable
- N60.11 Diffuse cystic mastopathy of right breast
- N60.12 Diffuse cystic mastopathy of left breast
- N60.19 Diffuse cystic mastopathy of unspecified breast
- N60.2 Fibroadenosis of breastNon-billable
- N60.21 Fibroadenosis of right breast
- N60.22 Fibroadenosis of left breast
- N60.29 Fibroadenosis of unspecified breast
- N60.3 Fibrosclerosis of breastNon-billable
- N60.31 Fibrosclerosis of right breast
- N60.32 Fibrosclerosis of left breast
- N60.39 Fibrosclerosis of unspecified breast
- N60.4 Mammary duct ectasiaNon-billable
- N60.41 Mammary duct ectasia of right breast
- N60.42 Mammary duct ectasia of left breast
- N60.49 Mammary duct ectasia of unspecified breast
- N60.8 Other benign mammary dysplasiasNon-billable
- N60.81 Other benign mammary dysplasias of right breast
- N60.82 Other benign mammary dysplasias of left breast
- N60.89 Other benign mammary dysplasias of unspecified breast
- N60.9 Unspecified benign mammary dysplasiaNon-billable
- N60.91 Unspecified benign mammary dysplasia of right breast
- N60.92 Unspecified benign mammary dysplasia of left breast
- N60.99 Unspecified benign mammary dysplasia of unspecified breast
Clinical Terms in This Code Range
Definitions from the National Library of Medicine for conditions coded in the N60 range.
Breast Fibrocystic Change
Fibrosis associated with cyst formation in the breast parenchyma.
Breast Fibrosis
Breast fibrocystic change characterized by the prominence of fibrotic changes in the parenchyma.
Mammary Duct Ectasia
Dilatation of the lumen of the mammary ducts without evidence of epithelial atypia.
Solitary Breast Cyst
A single, fluid-filled cyst in the breast parenchyma.
About the N60 Code Range
Benign mammary dysplasia refers to benign breast conditions, including a single breast cyst and other named breast changes.
The subdivisions separate a single cyst (N60.0), diffuse cystic mastopathy (N60.1), fibroadenosis (N60.2), fibrosclerosis (N60.3), and mammary duct ectasia (N60.4). Other and unspecified benign mammary dysplasia have separate branches. Each branch then distinguishes the right breast, left breast, and unspecified breast.
Questions About This Page
How many billable codes are in the N60 range?
Of the 29 codes in this range, 21 are billable and valid for claim submission from October 1, 2026 through September 30, 2027. Category header codes group them but cannot be reported on claims.
What does the N60 range classify?
The range classifies benign mammary dysplasia. Each code links to its own reference page with billing status, MS-DRG grouping, coding notes, and clinical information.
Related References
Source: CMS FY 2027 ICD-10-CM Tabular List and order file, effective October 1, 2026 through September 30, 2027.
