N64.0
✓ Billable
Fissure and fistula of nipple
ICD-10-CM · FY2026 · Diseases of the Genitourinary System
Code
N64.0
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 N64.0?
ICD-10-CM code N64.0 represents Fissure and fistula of nipple. It is a billable diagnosis code in the Diseases of the Genitourinary System chapter, effective October 1, 2025 – September 30, 2026.
Is N64.0 billable?
Yes. N64.0 is a valid billable ICD-10-CM code for insurance claims and clinical documentation.
What chapter is N64.0 in?
N64.0 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
N64.1
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
N64.9
Disorder of breast, unspecified
Billable
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