ICD10BillableValid for clinical use
ICD-10 Code N64.9: Disorder of breast, unspecified
Reviewed by HealthAssure Clinical TeamUpdated 26 May 2026
What is this code?
ICD-10 codes are diagnosis classification codes used in healthcare records, reporting, coding workflows, and billing support. This code sits within the broader ICD-10 area for Diseases of the genitourinary system (N00-N99).
When is it used?
- May be used when a clinician documents disorder of breast, unspecified in a patient's medical record.
- May appear in hospital records, claims, referrals, and clinical documentation.
- This code can be used as a clinically usable diagnosis entry in standardized coding workflows.
What it does not mean
- A code alone does not explain severity, treatment plan, or outcome.
- A medical code should not be treated as a substitute for a doctor's diagnosis or advice.
Code hierarchy
chapter
14Diseases of the genitourinary system (N00-N99)
block
N60-N65Disorders of breast
category
N64Other disorders of breast
currentN64
Where you may see this code
You may see this code in hospital records, discharge summaries, insurance claims, encounter documentation, referrals, or other healthcare billing and coding records.
Related specialists
UrologistGynecologist
Related codes
Sibling codes
Mapped diagnoses and classifications
SNOMED_CT 24414006high
Abnormal breast function
Source: SNOMED International ICD-10 map
SNOMED_CT 15954541000119105high
Bilateral changes in skin of breasts
Source: SNOMED International ICD-10 map
SNOMED_CT 275258002high
Breast changes
Source: SNOMED International ICD-10 map
SNOMED_CT 290085007high
Breast problem
Source: SNOMED International ICD-10 map
SNOMED_CT 128529002high
Chronic disease of breast
Source: SNOMED International ICD-10 map
SNOMED_CT 79604008high
Disorder of breast
Source: SNOMED International ICD-10 map
Coding guidelines
Compatibility
Legacy and official ICD code match exactly.
Legacy codes
N64.9
Common synonyms
Disorder of breast, unspecifiedDisorder of breast
Frequently asked questions
About this content
This page is prepared by HealthAssure's clinical team using official coding standards from ICD-10. AI tools assist with drafting explanations, which are then reviewed and verified by healthcare professionals for accuracy. This content is for informational purposes and does not replace professional medical advice. Meet our team.