| N60 | Benign mammary dysplasia |
| N60.0 | Solitary cyst of breast |
| 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 mastopathy |
| 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 breast |
| N60.21 | Fibroadenosis of right breast |
| N60.22 | Fibroadenosis of left breast |
| N60.29 | Fibroadenosis of unspecified breast |
| N60.3 | Fibrosclerosis of breast |
| N60.31 | Fibrosclerosis of right breast |
| N60.32 | Fibrosclerosis of left breast |
| N60.39 | Fibrosclerosis of unspecified breast |
| N60.4 | Mammary duct ectasia |
| 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 dysplasias |
| 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 dysplasia |
| 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 |
| N61 | Inflammatory disorders of breast |
| N62 | Hypertrophy of breast |
| N63 | Unspecified lump in breast |
| N64 | Other disorders of breast |
| N64.0 | Fissure and fistula of nipple |
| N64.1 | Fat necrosis of breast |
| N64.2 | Atrophy of breast |
| N64.3 | Galactorrhea not associated with childbirth |
| N64.4 | Mastodynia |
| N64.5 | Other signs and symptoms in breast |
| N64.51 | Induration of breast |
| N64.52 | Nipple discharge |
| N64.53 | Retraction of nipple |
| N64.59 | Other signs and symptoms in breast |
| N64.8 | Other specified disorders of breast |
| N64.81 | Ptosis of breast |
| N64.82 | Hypoplasia of breast |
| N64.89 | Other specified disorders of breast |
| N64.9 | Disorder of breast, unspecified |
| N65 | Deformity and disproportion of reconstructed breast |
| N65.0 | Deformity of reconstructed breast |
| N65.1 | Disproportion of reconstructed breast |