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ICD-10 Guide
ICD-10 CodesChapter 14: Diseases of the genitourinary systemN90

N90

Billable

Other noninflammatory disorders of vulva and perineum

Chapter 14:Diseases of the genitourinary system

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

Code Description

ICD-10 N90 is a billable code used to indicate a diagnosis of other noninflammatory disorders of vulva and perineum.

Key Diagnostic Point:

N90 encompasses a variety of noninflammatory conditions affecting the vulva and perineum, which may include disorders such as vulvar vestibulitis, lichen sclerosus, and other skin conditions that do not involve acute inflammation. These disorders can lead to symptoms such as itching, pain, and discomfort, significantly impacting a patient's quality of life. The conditions may arise from hormonal changes, skin disorders, or other underlying health issues. Accurate diagnosis often requires a thorough clinical examination and may involve biopsy or other diagnostic tests to rule out inflammatory or infectious causes. Treatment options vary widely and may include topical therapies, lifestyle modifications, and in some cases, surgical interventions. Understanding the nuances of these conditions is crucial for effective management and coding, as they can overlap with inflammatory disorders, necessitating careful documentation and coding practices.

Code Complexity Analysis

Complexity Rating: Medium

Medium Complexity

Complexity Factors

  • Variety of conditions included under the code
  • Overlap with inflammatory disorders requiring careful differentiation
  • Need for detailed clinical documentation to support diagnosis
  • Potential for misclassification with related codes

Audit Risk Factors

  • Insufficient documentation of symptoms and clinical findings
  • Misuse of related inflammatory disorder codes
  • Inconsistent coding practices across providers
  • Failure to document treatment plans or follow-up care

Specialty Focus

Medical Specialties

Gynecology

Documentation Requirements

Detailed patient history, physical examination findings, and treatment plans must be documented.

Common Clinical Scenarios

Patients presenting with vulvar pain, itching, or skin changes.

Billing Considerations

Ensure that all relevant diagnostic tests and their results are included in the documentation.

Dermatology

Documentation Requirements

Comprehensive skin examination notes and any biopsy results should be included.

Common Clinical Scenarios

Patients with skin disorders affecting the vulva or perineum.

Billing Considerations

Document any differential diagnoses considered during the evaluation.

Coding Guidelines

Inclusion Criteria

Use N90 When
  • Follow the official ICD
  • CM coding guidelines, ensuring that the diagnosis is supported by clinical documentation

Exclusion Criteria

Do NOT use N90 When
  • Exclude conditions that are inflammatory in nature unless specifically stated as noninflammatory

Related CPT Codes

58150CPT Code

Total abdominal hysterectomy

Clinical Scenario

Used in cases where noninflammatory disorders necessitate surgical intervention.

Documentation Requirements

Document the indication for surgery and any preoperative evaluations.

Specialty Considerations

Gynecologists should ensure that all relevant findings are documented to support the procedure.

ICD-10 Impact

Diagnostic & Documentation Impact

Enhanced Specificity

ICD-10 Improvements

The transition to ICD-10 has allowed for more specific coding of noninflammatory disorders, improving the accuracy of data collection and reimbursement processes. N90 provides a distinct classification for conditions that were previously grouped under broader categories in ICD-9.

ICD-9 vs ICD-10

The transition to ICD-10 has allowed for more specific coding of noninflammatory disorders, improving the accuracy of data collection and reimbursement processes. N90 provides a distinct classification for conditions that were previously grouped under broader categories in ICD-9.

Reimbursement & Billing Impact

reimbursement processes. N90 provides a distinct classification for conditions that were previously grouped under broader categories in ICD-9.

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 types of conditions are classified under N90?

N90 includes various noninflammatory disorders such as vulvar vestibulitis, lichen sclerosus, and other skin conditions affecting the vulva and perineum.