N64.9
✓ Billable
Disorder of breast, unspecified
ICD-10-CM · FY2026 · Diseases of the Genitourinary System
Code
N64.9
System
ICD-10-CM
Billable
Yes — valid for submission
Effective
FY2026
Chapter
Diseases of the Genitourinary System
Source
CMS / CDC NCHS
⚠ Verify before billing. Confirm against the current CMS/NCHS ICD-10-CM files and your payer's rules before claims submission.
Frequently asked questions
What is ICD-10 code N64.9?
ICD-10-CM code N64.9 represents Disorder of breast, unspecified. It is a billable diagnosis code in the Diseases of the Genitourinary System chapter, effective October 1, 2025 – September 30, 2026.
Is N64.9 billable?
Yes. N64.9 is a valid billable ICD-10-CM code for insurance claims and clinical documentation.
What chapter is N64.9 in?
N64.9 belongs to the Diseases of the Genitourinary System chapter (N00–N99) of ICD-10-CM.
Related codes in the N64 category
N64
Other disorders of breast
Non-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
Non-billable
N64.8
Other specified disorders of breast
Non-billable
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