Is N64 a billable code?
No. N64 is a header code that groups 13 more specific codes. Use one of the billable codes listed on this page instead.
ICD-10-CM FY2027 diagnosis code
N64: Other disorders of breast
Header code: not billableValid for dates of service October 1, 2026 to September 30, 2027
N64 groups related diagnoses under other disorders of breast. It cannot be used on a claim by itself. Choose the billable code below that matches the patient's record.
Billable codes under N64
- N64.0Fissure and fistula of nipple
- N64.1Fat necrosis of breast
- N64.2Atrophy of breast
- N64.3Galactorrhea not associated with childbirth
- N64.4Mastodynia
- N64.51Induration of breast
- N64.52Nipple discharge
- N64.53Retraction of nipple
- N64.59Other signs and symptoms in breast
- N64.81Ptosis of breast
- N64.82Hypoplasia of breast
- N64.89Other specified disorders of breast
- N64.9Disorder of breast, unspecified
N64 questions
What does N64 mean?
N64 is the ICD-10-CM code for Other disorders of breast. It is in chapter 14, Diseases of the genitourinary system (N00-N99).
Code titles come from the official ICD-10-CM files published by the CDC National Center for Health Statistics. Always check payer rules and the clinical record before billing.