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 2026, 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
About the N60 Code Range
ICD-10 code N60 covers benign mammary dysplasia, a group of noncancerous breast conditions. This section includes codes for various cysts, fibrocystic changes, fibroadenosis, and other benign changes in breast tissue, specified by the affected breast.
This set of codes is used to classify benign breast changes such as solitary cysts (N60.0 series), which are fluid-filled sacs in one or both breasts. Terms like cysts of the right or left breast and complex or simple cysts correspond to codes N60.01, N60.02, and N60.09 respectively. Diffuse cystic mastopathy (N60.1 series) refers to widespread cystic changes, often called "fibrocystic disease," detailed by right, left, or unspecified breast. Fibroadenosis (N60.2 series) involves fibrous and glandular tissue changes, sometimes known as "benign mammary dysplasia" or "sclerosing adenosis." Fibrosclerosis (N60.3 series) and mammary duct ectasia (N60.4 series) define fibrotic and ductal changes, with synonyms like induration or plasma cell mastitis. Codes in N60.8 and N60.9 cover other and unspecified benign dysplasias, including atypical hyperplasia and sebaceous cysts. These codes help healthcare professionals document nonmalignant breast conditions accurately and monitor their management.
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, 2025 through September 30, 2026. 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 2026 ICD-10-CM Tabular List and order file, effective October 1, 2025 through September 30, 2026.
