ICD-10-CM · Chapter 14 · N00-N99
N64 Other disorders of breast
Excludes 2 (not included here)
- mechanical complication of breast prosthesis and implant (T85.4-)
Subcodes
Subcodes are listed below for reference. Detail pages are not available for chapters 11–22.
| Code | Description | Billable |
|---|---|---|
| N64..0 | Fissure and fistula of nipple | Yes |
| N64..1 | Fat necrosis of breast | Yes |
| N64..2 | Atrophy of breast | Yes |
| N64..3 | Galactorrhea not associated with childbirth | Yes |
| N64..4 | Mastodynia | Yes |
| N64..5 | Other signs and symptoms in breast | No |
| N64..51 | Induration of breast | Yes |
| N64..52 | Nipple discharge | Yes |
| N64..53 | Retraction of nipple | Yes |
| N64..59 | Other signs and symptoms in breast | Yes |
| N64..8 | Other specified disorders of breast | No |
| N64..81 | Ptosis of breast | Yes |
| N64..82 | Hypoplasia of breast | Yes |
| N64..89 | Other specified disorders of breast | Yes |
| N64..9 | Disorder of breast, unspecified | Yes |
Last reviewed: September 2026