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v1.0.0
ICD-10 Guide
ICD-10 CodesN85.02

N85.02

Billable

Endometrial intraepithelial neoplasia [EIN]

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

Code Description

ICD-10 N85.02 is a billable code used to indicate a diagnosis of endometrial intraepithelial neoplasia [ein].

Key Diagnostic Point:

Endometrial intraepithelial neoplasia (EIN) is a precancerous condition characterized by abnormal growth of cells in the lining of the uterus (endometrium). It is considered a precursor to endometrial carcinoma and is often identified through endometrial biopsy. EIN is typically diagnosed in women of reproductive age to postmenopausal women, often presenting with abnormal uterine bleeding or other menstrual irregularities. The condition is associated with various risk factors, including obesity, diabetes, and hormonal imbalances, particularly excess estrogen without adequate progesterone. The diagnosis of EIN is confirmed histologically, showing atypical glandular cells within the endometrial epithelium. Management may involve close monitoring, hormonal therapy, or surgical intervention, depending on the severity of the atypia and the patient's overall health and reproductive plans. Accurate coding of EIN is crucial for appropriate treatment planning and monitoring, as well as for research and epidemiological studies.

Code Complexity Analysis

Complexity Rating: Medium

Medium Complexity

Complexity Factors

  • Histological confirmation required for diagnosis
  • Differentiation from other endometrial disorders
  • Potential overlap with endometrial hyperplasia
  • Documentation of symptoms and risk factors

Audit Risk Factors

  • Inadequate documentation of biopsy results
  • Failure to document risk factors associated with EIN
  • Misclassification with other endometrial conditions
  • Lack of follow-up documentation post-diagnosis

Specialty Focus

Medical Specialties

Gynecology

Documentation Requirements

Detailed pathology reports, patient history, and treatment plans.

Common Clinical Scenarios

Patients presenting with abnormal uterine bleeding, abnormal Pap smears, or findings on imaging studies.

Billing Considerations

Ensure accurate documentation of histological findings and any treatments provided.

Oncology

Documentation Requirements

Comprehensive cancer staging and treatment documentation.

Common Clinical Scenarios

Patients undergoing evaluation for potential endometrial cancer following an EIN diagnosis.

Billing Considerations

Document any multidisciplinary team discussions regarding treatment options.

Coding Guidelines

Inclusion Criteria

Use N85.02 When
  • According to the ICD
  • CM coding guidelines, EIN is classified under N85
  • It is essential to document the histological findings and any associated symptoms
  • EIN should not be coded if there is no histological confirmation or if the condition has progressed to endometrial carcinoma

Exclusion Criteria

Do NOT use N85.02 When
No specific exclusions found.

Related ICD-10 Codes

Related CPT Codes

58100CPT Code

Endometrial biopsy

Clinical Scenario

Used to confirm diagnosis of EIN.

Documentation Requirements

Pathology report confirming EIN diagnosis.

Specialty Considerations

Gynecologists should ensure thorough documentation of indications for biopsy.

ICD-10 Impact

Diagnostic & Documentation Impact

Enhanced Specificity

ICD-10 Improvements

The transition to ICD-10 has allowed for more specific coding of EIN, improving the accuracy of data collection and treatment planning. It has also facilitated better tracking of precancerous conditions and their management.

ICD-9 vs ICD-10

The transition to ICD-10 has allowed for more specific coding of EIN, improving the accuracy of data collection and treatment planning. It has also facilitated better tracking of precancerous conditions and their management.

Reimbursement & Billing Impact

The transition to ICD-10 has allowed for more specific coding of EIN, improving the accuracy of data collection and treatment planning. It has also facilitated better tracking of precancerous conditions and their management.

Resources

Clinical References

  • •
    American College of Obstetricians and Gynecologists (ACOG)

Coding & Billing References

  • •
    American College of Obstetricians and Gynecologists (ACOG)

Frequently Asked Questions

What is the significance of coding EIN accurately?

Accurate coding of EIN is crucial for appropriate treatment planning, monitoring of precancerous conditions, and ensuring proper reimbursement for services rendered.