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v1.0.0
ICD-10 Guide
ICD-10 CodesN90.1

N90.1

Billable

Moderate vulvar dysplasia

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

Code Description

ICD-10 N90.1 is a billable code used to indicate a diagnosis of moderate vulvar dysplasia.

Key Diagnostic Point:

Moderate vulvar dysplasia is a precancerous condition characterized by abnormal changes in the vulvar epithelium. It is classified under noninflammatory disorders of the female genital tract and is often associated with human papillomavirus (HPV) infection. Clinically, patients may present with symptoms such as vulvar itching, burning, or the presence of lesions. Diagnosis is typically made through a biopsy of the affected area, which reveals dysplastic changes in the squamous cells of the vulva. Moderate dysplasia indicates that the abnormal cells are present in a significant portion of the epithelium but have not invaded deeper tissues. This condition is important to monitor as it can progress to vulvar cancer if left untreated. Management may include surgical excision, topical treatments, or close surveillance, depending on the extent of dysplasia and patient factors. Regular gynecological examinations and HPV vaccinations are recommended for prevention.

Code Complexity Analysis

Complexity Rating: Medium

Medium Complexity

Complexity Factors

  • Differentiation from other vulvar conditions such as lichen sclerosus or vulvar intraepithelial neoplasia (VIN)
  • Need for precise documentation of biopsy results and dysplasia grading
  • Potential for co-existing conditions that may complicate coding
  • Variability in clinical presentation and symptoms among patients

Audit Risk Factors

  • Inadequate documentation of biopsy results
  • Failure to specify the grade of dysplasia
  • Misclassification of dysplasia severity
  • Lack of follow-up documentation for treatment plans

Specialty Focus

Medical Specialties

Gynecology

Documentation Requirements

Complete pathology reports, treatment plans, and follow-up notes must be documented.

Common Clinical Scenarios

Diagnosis of vulvar dysplasia during routine gynecological exams, management of HPV-related conditions.

Billing Considerations

Ensure accurate grading of dysplasia and document any co-existing conditions.

Pathology

Documentation Requirements

Detailed histopathological reports indicating the degree of dysplasia.

Common Clinical Scenarios

Biopsy interpretation for vulvar lesions, correlation of clinical findings with histological results.

Billing Considerations

Pathologists must clearly communicate the findings to assist in accurate coding.

Coding Guidelines

Inclusion Criteria

Use N90.1 When
  • According to ICD
  • 10 guidelines, N90
  • 1 should be used when moderate vulvar dysplasia is confirmed through biopsy
  • It is essential to document the diagnosis accurately and include any relevant clinical findings

Exclusion Criteria

Do NOT use N90.1 When
No specific exclusions found.

Related ICD-10 Codes

Related CPT Codes

57061CPT Code

Excision of vulvar lesion

Clinical Scenario

When a patient with moderate vulvar dysplasia undergoes surgical excision.

Documentation Requirements

Surgical notes detailing the procedure and findings.

Specialty Considerations

Gynecologists must ensure accurate coding of the procedure in relation to the diagnosis.

ICD-10 Impact

Diagnostic & Documentation Impact

Enhanced Specificity

ICD-10 Improvements

The transition to ICD-10 has allowed for more specific coding of vulvar dysplasia, improving the accuracy of diagnoses and treatment tracking. This specificity aids in better patient management and research outcomes.

ICD-9 vs ICD-10

The transition to ICD-10 has allowed for more specific coding of vulvar dysplasia, improving the accuracy of diagnoses and treatment tracking. This specificity aids in better patient management and research outcomes.

Reimbursement & Billing Impact

The transition to ICD-10 has allowed for more specific coding of vulvar dysplasia, improving the accuracy of diagnoses and treatment tracking. This specificity aids in better patient management and research outcomes.

Resources

Clinical References

  • •
    CDC HPV Vaccine Information

Coding & Billing References

  • •
    CDC HPV Vaccine Information

Frequently Asked Questions

What is the significance of coding moderate vulvar dysplasia?

Coding moderate vulvar dysplasia accurately is crucial for patient management, treatment planning, and tracking potential progression to cancer. It also impacts billing and reimbursement processes.