N64.59 – Other signs and symptoms in breast
ICD-10-CM 2027 diagnosis code · Disorders of breast
ICD-10-CM code
N64.59
- Code
N64.59(claims format:N6459)- Description
- Other signs and symptoms in breast
- Billable
- Yes – valid for HIPAA-covered transactions
- Valid for
- Dates of service October 1, 2026 – September 30, 2027 (FY2027)
- Chapter
- 14. Diseases of the genitourinary system (N00-N99)
- Block
- N60-N65 Disorders of breast
- Parent codes
- N64 › N64.5
Notes inherited from parent codes
Instructional notes at a category or block level apply to every code below it.
N64 – Other disorders of breast
Excludes2 (not included here):
- mechanical complication of breast prosthesis and implant (T85.4-)
N64.5 – Other signs and symptoms in breast
Excludes2 (not included here):
- abnormal findings on diagnostic imaging of breast (R92.-)
Block N60-N65
Index terms for N64.59
Entries in the ICD-10-CM alphabetic index that lead to this code:
Related codes in N64.5
- N64.51 – Induration of breastBillable
- N64.52 – Nipple dischargeBillable
- N64.53 – Retraction of nippleBillable
Frequently asked questions
What is ICD-10 code N64.59?
N64.59 is the ICD-10-CM code for other signs and symptoms in breast, in the block N60-N65 (Disorders of breast).
Is N64.59 a billable code?
Yes. N64.59 is a billable/specific code that can be used to indicate a diagnosis for reimbursement purposes.
What category does N64.59 belong to?
It belongs to category N64 – Other disorders of breast.
Source: CDC/NCHS ICD-10-CM FY2027 code files, tabular list and index. Reference only – code assignment must follow the official ICD-10-CM guidelines and documentation in the medical record.