ICD-10 Logo
ICDxICD-10 Medical Coding
ICD-10 Logo
ICDxICD-10 Medical Coding
ICD 10 CodesDiagnoses
ICD 10 CodesDiagnoses
ICD-10 Logo
ICDxICD-10 Medical Coding

Comprehensive ICD-10-CM code reference with AI-powered search capabilities.

© 2025 ICD Code Compass. All rights reserved.

Browse

  • All Chapters
  • All Categories
  • Diagnoses

Tools

  • AI Code Search
ICD-10-CM codes are maintained by the CDC and CMS. This tool is for reference purposes only.
v1.0.0
ICD-10 Guide
ICD-10 CodesN63.1

N63.1

Billable

Unspecified lump in the right breast

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

Code Description

ICD-10 N63.1 is a billable code used to indicate a diagnosis of unspecified lump in the right breast.

Key Diagnostic Point:

N63.1 refers to an unspecified lump located in the right breast. This code is often used when a patient presents with a palpable mass that has not been definitively diagnosed as benign or malignant. The lump may arise from various benign breast diseases, such as fibrocystic changes, fibroadenomas, or lipomas. It can also be associated with conditions like mastitis or breast hypertrophy. The clinical evaluation typically involves a thorough history and physical examination, followed by imaging studies such as mammography or ultrasound to assess the characteristics of the lump. In some cases, a biopsy may be necessary to determine the nature of the lump. Accurate coding requires careful documentation of the clinical findings, imaging results, and any interventions performed. The unspecified nature of this code highlights the importance of further diagnostic workup to rule out malignancy and to provide appropriate management.

Code Complexity Analysis

Complexity Rating: Medium

Medium Complexity

Complexity Factors

  • Variability in clinical presentation and underlying causes of breast lumps.
  • Need for comprehensive documentation to support the diagnosis.
  • Potential for overlap with other breast-related codes.
  • Requirement for imaging studies and possible biopsy results.

Audit Risk Factors

  • Inadequate documentation of clinical findings.
  • Failure to include imaging results in the medical record.
  • Lack of follow-up documentation for further evaluation.
  • Misclassification of benign versus malignant lumps.

Specialty Focus

Medical Specialties

Oncology

Documentation Requirements

Detailed pathology reports and imaging studies.

Common Clinical Scenarios

Patients presenting with breast lumps requiring further evaluation for malignancy.

Billing Considerations

Ensure clear documentation of the diagnostic process and treatment plan.

Radiology

Documentation Requirements

Comprehensive imaging reports detailing findings and recommendations.

Common Clinical Scenarios

Imaging studies performed to evaluate breast lumps.

Billing Considerations

Accurate coding based on imaging findings and correlation with clinical data.

Coding Guidelines

Inclusion Criteria

Use N63.1 When
  • According to the official coding guidelines, N63
  • 1 should be used when a lump in the right breast is identified but not further specified
  • Coders should ensure that the documentation supports the diagnosis and that any imaging or biopsy results are included in the medical record

Exclusion Criteria

Do NOT use N63.1 When
No specific exclusions found.

Related ICD-10 Codes

Related CPT Codes

19100CPT Code

Excision, breast lump

Clinical Scenario

When a lump is excised for further evaluation.

Documentation Requirements

Operative report detailing the procedure and findings.

Specialty Considerations

Ensure that the excision is documented as related to the lump in the right breast.

ICD-10 Impact

Diagnostic & Documentation Impact

Enhanced Specificity

ICD-10 Improvements

The transition to ICD-10 has allowed for more specific coding of breast conditions, improving the granularity of data for research and treatment outcomes. N63.1 provides a clear designation for unspecified lumps, facilitating better tracking and management of breast health.

ICD-9 vs ICD-10

The transition to ICD-10 has allowed for more specific coding of breast conditions, improving the granularity of data for research and treatment outcomes. N63.1 provides a clear designation for unspecified lumps, facilitating better tracking and management of breast health.

Reimbursement & Billing Impact

reimbursement.

Resources

Clinical References

  • •
    American College of Radiology - Breast Imaging

Coding & Billing References

  • •
    American College of Radiology - Breast Imaging

Frequently Asked Questions

What should I document when coding N63.1?

Document the patient's symptoms, the findings from the physical examination, any imaging studies performed, and the plan for further evaluation or treatment.