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v1.0.0
ICD-10 Guide
DiagnosesAtypical Lobular Hyperplasia

Atypical Lobular Hyperplasia

ICD-10 Coding for Atypical Lobular Hyperplasia(N60.89)

PRIMARY SPECIALTYSurgical Oncology
COMPLEXITYHigh
LAST UPDATED09/15/2025
Sam Tuffun, PT, DPT
Physical Therapist | Medical Coding & Billing Contributor

Diagnosis Overview

What is Atypical Lobular Hyperplasia?
Essential facts and insights about Atypical Lobular Hyperplasia

Key Clinical Considerations:

  • Often asymptomatic; may be found incidentally on biopsy
  • Histological examination showing atypical lobular hyperplasia
  • Possible palpable breast mass or abnormal imaging findings

Clinical Information

Clinical Criteria & Documentation Requirements

  • Patient history including risk factors and family history
  • Detailed pathology report indicating atypical lobular hyperplasia
  • Clinical notes documenting physical exam findings and imaging results

Coding Guidelines

Usage Guidelines & Examples

  • Follow guidelines for coding atypical lobular hyperplasia versus other breast lesions.
  • Common errors include misclassifying atypical lobular hyperplasia as invasive carcinoma.

Code Exclusions

Important Exclusions

  • Invasive lobular carcinoma
  • Other benign breast conditions such as fibrocystic changes

Related ICD-10 Codes

Primary Codes
D24.1
Atypical lobular hyperplasia of breast
Ancillary Codes
Z12.31
Differential Codes
D05.92
D05.92
if the biopsy confirms lobular carcinoma in situ, which involves more extensive lobular unit involvement.

Related CPT Codes

CPT codes will be available in a future update.

Specialty Focus

Primary Specialty

Surgical Oncology

Specialty Applications

  • Women with a history of breast lesions or family history of breast cancer
  • Surgical oncology settings for biopsy and management

Coding Complexity

High Complexity

This diagnosis requires careful attention to:

  • Comprehensive clinical documentation
  • Accurate code selection based on clinical criteria
  • Proper exclusion considerations
  • Specialty-specific coding guidelines

Documentation

Documentation Templates

Billing Information

Billing Considerations

  • Ensure proper documentation for billing
  • Verify code specificity requirements
  • Check for any additional codes needed
  • Review payer-specific guidelines

Common Issues

  • Insufficient clinical documentation
  • Incorrect code selection
  • Missing supporting diagnoses
  • Timing and frequency documentation

Frequently Asked Questions

Documentation requirements?

Include detailed pathology reports and clinical notes.

Billing considerations?

Ensure accurate coding to reflect the diagnosis and any associated procedures.