Disorders of breast
79 codes in this section
About Section N60-N65
Section N60-N65 (N60-N65) covers disorders of breast. It sits within the Diseases of the genitourinary system chapter (N00-N99). This section contains 79 ICD-10-CM codes, 60 billable diagnoses you can submit on a claim, and 19 non-billable header codes used to organize the hierarchy.
Codes are organized below by 3-character root. Click the root to see all subcodes underneath it, or click any individual code for full coverage data, payer policies, and linked CPT procedures.
Codes in N60-N65
Grouped by 3-character root code. Click any code for full detail.
| N60.0 | Solitary cyst of breast | Header |
| N60.01 | Solitary cyst of right breast | Billable |
| N60.02 | Solitary cyst of left breast | Billable |
| N60.09 | Solitary cyst of unspecified breast | Billable |
| N60.1 | Diffuse cystic mastopathy | Header |
| N60.11 | Diffuse cystic mastopathy of right breast | Billable |
| N60.12 | Diffuse cystic mastopathy of left breast | Billable |
| N60.19 | Diffuse cystic mastopathy of unspecified breast | Billable |
| N60.2 | Fibroadenosis of breast | Header |
| N60.21 | Fibroadenosis of right breast | Billable |
| N60.22 | Fibroadenosis of left breast | Billable |
| N60.29 | Fibroadenosis of unspecified breast | Billable |
| N60.3 | Fibrosclerosis of breast | Header |
| N60.31 | Fibrosclerosis of right breast | Billable |
| N60.32 | Fibrosclerosis of left breast | Billable |
| N60.39 | Fibrosclerosis of unspecified breast | Billable |
| N60.4 | Mammary duct ectasia | Header |
| N60.41 | Mammary duct ectasia of right breast | Billable |
| N60.42 | Mammary duct ectasia of left breast | Billable |
| N60.49 | Mammary duct ectasia of unspecified breast | Billable |
| N60.8 | Other benign mammary dysplasias | Header |
| N60.81 | Other benign mammary dysplasias of right breast | Billable |
| N60.82 | Other benign mammary dysplasias of left breast | Billable |
| N60.89 | Other benign mammary dysplasias of unspecified breast | Billable |
| N60.9 | Unspecified benign mammary dysplasia | Header |
| N60.91 | Unspecified benign mammary dysplasia of right breast | Billable |
| N60.92 | Unspecified benign mammary dysplasia of left breast | Billable |
| N60.99 | Unspecified benign mammary dysplasia of unspecified breast | Billable |
| N61.0 | Mastitis without abscess | Billable |
| N61.1 | Abscess of the breast and nipple | Billable |
| N61.2 | Granulomatous mastitis | Header |
| N61.20 | Granulomatous mastitis, unspecified breast | Billable |
| N61.21 | Granulomatous mastitis, right breast | Billable |
| N61.22 | Granulomatous mastitis, left breast | Billable |
| N61.23 | Granulomatous mastitis, bilateral breast | Billable |
| N63.0 | Unspecified lump in unspecified breast | Billable |
| N63.1 | Unspecified lump in the right breast | Header |
| N63.10 | Unspecified lump in the right breast, unspecified quadrant | Billable |
| N63.11 | Unspecified lump in the right breast, upper outer quadrant | Billable |
| N63.12 | Unspecified lump in the right breast, upper inner quadrant | Billable |
| N63.13 | Unspecified lump in the right breast, lower outer quadrant | Billable |
| N63.14 | Unspecified lump in the right breast, lower inner quadrant | Billable |
| N63.15 | Unspecified lump in the right breast, overlapping quadrants | Billable |
| N63.2 | Unspecified lump in the left breast | Header |
| N63.20 | Unspecified lump in the left breast, unspecified quadrant | Billable |
| N63.21 | Unspecified lump in the left breast, upper outer quadrant | Billable |
| N63.22 | Unspecified lump in the left breast, upper inner quadrant | Billable |
| N63.23 | Unspecified lump in the left breast, lower outer quadrant | Billable |
| N63.24 | Unspecified lump in the left breast, lower inner quadrant | Billable |
| N63.25 | Unspecified lump in the left breast, overlapping quadrants | Billable |
| N63.3 | Unspecified lump in axillary tail | Header |
| N63.31 | Unspecified lump in axillary tail of the right breast | Billable |
| N63.32 | Unspecified lump in axillary tail of the left breast | Billable |
| N63.4 | Unspecified lump in breast, subareolar | Header |
| N63.41 | Unspecified lump in right breast, subareolar | Billable |
| N63.42 | Unspecified lump in left breast, subareolar | Billable |
| N64.0 | Fissure and fistula of nipple | Billable |
| N64.1 | Fat necrosis of breast | Billable |
| N64.2 | Atrophy of breast | Billable |
| N64.3 | Galactorrhea not associated with childbirth | Billable |
| N64.4 | Mastodynia | Billable |
| N64.5 | Other signs and symptoms in breast | Header |
| N64.51 | Induration of breast | Billable |
| N64.52 | Nipple discharge | Billable |
| N64.53 | Retraction of nipple | Billable |
| N64.59 | Other signs and symptoms in breast | Billable |
| N64.8 | Other specified disorders of breast | Header |
| N64.81 | Ptosis of breast | Billable |
| N64.82 | Hypoplasia of breast | Billable |
| N64.89 | Other specified disorders of breast | Billable |
| N64.9 | Disorder of breast, unspecified | Billable |
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Reviewed by the PayerReady Medical Coding Team
Verified against the CMS 2026 code set on May 31, 2026.
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