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ICD-10 Guide
ICD-10 CodesN85.01

N85.01

Billable

Benign endometrial hyperplasia

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

Code Description

ICD-10 N85.01 is a billable code used to indicate a diagnosis of benign endometrial hyperplasia.

Key Diagnostic Point:

Benign endometrial hyperplasia is a condition characterized by the abnormal proliferation of the endometrial lining of the uterus. This hyperplastic change is often a response to prolonged estrogen stimulation without adequate progesterone opposition, leading to thickening of the endometrium. Clinically, patients may present with symptoms such as abnormal uterine bleeding, which can range from heavy menstrual periods (menorrhagia) to intermenstrual bleeding. The condition is typically diagnosed through a combination of clinical evaluation, imaging studies such as transvaginal ultrasound, and histological examination via endometrial biopsy. While benign, endometrial hyperplasia can be classified into simple and complex types, with the latter having a higher risk of progression to endometrial carcinoma if left untreated. Management often involves hormonal therapy, such as progestins, to counteract the effects of estrogen and promote the shedding of the hyperplastic endometrium. Regular follow-up and monitoring are essential to prevent potential complications.

Code Complexity Analysis

Complexity Rating: Medium

Medium Complexity

Complexity Factors

  • Differentiation between simple and complex hyperplasia
  • Need for histological confirmation
  • Potential for progression to malignancy
  • Variability in clinical presentation

Audit Risk Factors

  • Inadequate documentation of symptoms
  • Failure to specify type of hyperplasia
  • Lack of follow-up documentation
  • Misclassification of benign versus malignant conditions

Specialty Focus

Medical Specialties

Obstetrics and Gynecology

Documentation Requirements

Detailed patient history, including menstrual cycle patterns, symptoms, and any previous gynecological conditions.

Common Clinical Scenarios

Patients presenting with abnormal uterine bleeding, postmenopausal bleeding, or findings on imaging suggestive of hyperplasia.

Billing Considerations

Ensure that the type of hyperplasia is clearly documented, along with any treatment plans and follow-up recommendations.

Pathology

Documentation Requirements

Histopathological reports detailing the findings of endometrial biopsies.

Common Clinical Scenarios

Evaluation of endometrial tissue samples for hyperplasia or malignancy.

Billing Considerations

Accurate coding based on biopsy results is crucial for appropriate management and follow-up.

Coding Guidelines

Inclusion Criteria

Use N85.01 When
  • According to ICD
  • 10 coding guidelines, N85
  • 01 should be used when there is a confirmed diagnosis of benign endometrial hyperplasia
  • It is important to document the type of hyperplasia and any associated symptoms or treatments

Exclusion Criteria

Do NOT use N85.01 When
  • Exclusion criteria include any malignant conditions or other specified endometrial disorders

Related ICD-10 Codes

Related CPT Codes

58120CPT Code

Dilation and curettage, diagnostic

Clinical Scenario

Used when a patient with suspected hyperplasia undergoes a D&C for diagnosis.

Documentation Requirements

Document indication for procedure, findings, and any follow-up plans.

Specialty Considerations

Obstetricians should ensure that the procedure is justified based on clinical findings.

ICD-10 Impact

Diagnostic & Documentation Impact

Enhanced Specificity

ICD-10 Improvements

The transition to ICD-10 has allowed for more specific coding of benign endometrial hyperplasia, improving the accuracy of data collection and management of the condition. This specificity aids in better tracking of treatment outcomes and resource allocation.

ICD-9 vs ICD-10

The transition to ICD-10 has allowed for more specific coding of benign endometrial hyperplasia, improving the accuracy of data collection and management of the condition. This specificity aids in better tracking of treatment outcomes and resource allocation.

Reimbursement & Billing Impact

reimbursement.

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 is the difference between simple and complex endometrial hyperplasia?

Simple hyperplasia involves an increase in the number of endometrial glands without atypia, while complex hyperplasia has a more intricate glandular architecture and may have atypical cells, which increases the risk of progression to cancer.