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v1.0.0
ICD-10 Guide
ICD-10 CodesN64.0

N64.0

Billable

Fissure and fistula of nipple

BILLABLE STATUSYes
IMPLEMENTATION DATEOctober 1, 2015
LAST UPDATED09/18/2025

Code Description

ICD-10 N64.0 is a billable code used to indicate a diagnosis of fissure and fistula of nipple.

Key Diagnostic Point:

Fissures and fistulas of the nipple are conditions that can arise due to various factors, including trauma, infection, or underlying benign breast diseases. A fissure is a small tear or crack in the nipple, often resulting from breastfeeding or irritation, while a fistula is an abnormal connection between the nipple and surrounding tissues or ducts, which may develop due to chronic inflammation or infection. These conditions can lead to pain, discomfort, and potential complications such as secondary infections. Patients may present with symptoms such as nipple discharge, tenderness, or visible cracks. Diagnosis typically involves a thorough clinical examination, and imaging studies may be warranted to assess for underlying issues, especially in the presence of discharge or lumps. Management may include conservative measures such as topical treatments or, in more severe cases, surgical intervention. Understanding the etiology and associated conditions is crucial for accurate coding and treatment planning.

Code Complexity Analysis

Complexity Rating: Medium

Medium Complexity

Complexity Factors

  • Differentiating between fissures and fistulas
  • Identifying underlying causes such as mastitis or benign breast disease
  • Documenting associated symptoms like discharge or pain
  • Understanding the implications of breast imaging findings

Audit Risk Factors

  • Inadequate documentation of symptoms and clinical findings
  • Failure to specify the type of fissure or fistula
  • Misclassification of the condition as a more severe diagnosis
  • Lack of imaging documentation when indicated

Specialty Focus

Medical Specialties

Breast Surgery

Documentation Requirements

Detailed clinical notes on the examination findings, imaging results, and treatment plans.

Common Clinical Scenarios

Patients presenting with nipple pain, discharge, or visible fissures.

Billing Considerations

Ensure to document any surgical interventions or follow-up care.

Obstetrics and Gynecology

Documentation Requirements

Comprehensive history of breastfeeding, any trauma, and associated symptoms.

Common Clinical Scenarios

Postpartum patients experiencing nipple fissures due to breastfeeding.

Billing Considerations

Document the duration and severity of symptoms to support the diagnosis.

Coding Guidelines

Inclusion Criteria

Use N64.0 When
  • According to ICD
  • 10 coding guidelines, N64
  • 0 should be used when there is a documented diagnosis of fissure or fistula of the nipple without any specified underlying conditions
  • It is important to ensure that the documentation supports the diagnosis and that any related conditions are coded appropriately

Exclusion Criteria

Do NOT use N64.0 When
No specific exclusions found.

Related ICD-10 Codes

Related CPT Codes

19301CPT Code

Mastectomy, partial

Clinical Scenario

Used when surgical intervention is required for severe cases of nipple fissures or fistulas.

Documentation Requirements

Document the indication for surgery and any preoperative assessments.

Specialty Considerations

Breast surgeons should ensure comprehensive documentation of the surgical procedure and postoperative care.

ICD-10 Impact

Diagnostic & Documentation Impact

Enhanced Specificity

ICD-10 Improvements

The transition to ICD-10 has allowed for more specific coding of nipple conditions, improving the accuracy of diagnoses and treatment planning. N64.0 provides a clear classification for fissures and fistulas, facilitating better patient management.

ICD-9 vs ICD-10

The transition to ICD-10 has allowed for more specific coding of nipple conditions, improving the accuracy of diagnoses and treatment planning. N64.0 provides a clear classification for fissures and fistulas, facilitating better patient management.

Reimbursement & Billing Impact

The transition to ICD-10 has allowed for more specific coding of nipple conditions, improving the accuracy of diagnoses and treatment planning. N64.0 provides a clear classification for fissures and fistulas, facilitating better patient management.

Resources

Clinical References

  • •
    ICD-10-CM Official Guidelines for Coding and Reporting

Coding & Billing References

  • •
    ICD-10-CM Official Guidelines for Coding and Reporting

Frequently Asked Questions

What are the common causes of nipple fissures?

Common causes include breastfeeding, trauma, infections, and chronic irritation. Proper assessment is essential to determine the underlying cause.

How can I differentiate between a fissure and a fistula?

A fissure is a superficial crack, while a fistula is an abnormal connection that may involve deeper tissues. Clinical examination and imaging can help differentiate.