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ICD-10 Guide
ICD-10 CodesD03.4

D03.4

Billable

Melanoma in situ of scalp and neck

BILLABLE STATUSYes
IMPLEMENTATION DATEOctober 1, 2015
LAST UPDATED09/05/2025

Code Description

ICD-10 D03.4 is a billable code used to indicate a diagnosis of melanoma in situ of scalp and neck.

Key Diagnostic Point:

Melanoma in situ of the scalp and neck is a localized form of melanoma characterized by the presence of atypical melanocytes confined to the epidermis. This condition is considered a precursor to invasive melanoma and is typically asymptomatic in its early stages. Patients may present with a pigmented lesion that may vary in color, shape, and size. Diagnosis is confirmed through a biopsy, which reveals atypical melanocytes without invasion into the dermis. Surveillance protocols for melanoma in situ include regular skin examinations and monitoring for changes in the lesion or the development of new lesions. The risk of progression to invasive melanoma is significant, particularly if the lesion is not excised. Factors influencing progression risk include the thickness of the lesion, patient age, and immunosuppression status. Early detection and treatment are crucial for favorable outcomes, making awareness and education about skin changes essential for patients at risk.

Code Complexity Analysis

Complexity Rating: Medium

Medium Complexity

Complexity Factors

  • Differentiation from other skin lesions
  • Need for precise documentation of lesion characteristics
  • Potential for progression to invasive melanoma
  • Variability in presentation among patients

Audit Risk Factors

  • Inadequate documentation of lesion characteristics
  • Failure to document follow-up care
  • Misclassification of in situ versus invasive melanoma
  • Lack of patient history regarding skin cancer

Specialty Focus

Medical Specialties

Dermatology

Documentation Requirements

Detailed descriptions of the lesion, biopsy results, and follow-up plans.

Common Clinical Scenarios

Diagnosis and treatment of melanoma in situ, routine skin checks, and management of high-risk patients.

Billing Considerations

Ensure accurate staging and documentation of any changes in the lesion.

Oncology

Documentation Requirements

Comprehensive treatment plans, including surgical interventions and follow-up care.

Common Clinical Scenarios

Management of patients with a history of melanoma, including surveillance and treatment of new lesions.

Billing Considerations

Coordination with dermatology for comprehensive care and documentation.

Coding Guidelines

Inclusion Criteria

Use D03.4 When
  • According to ICD
  • 10 guidelines, D03
  • 4 should be used when melanoma is confirmed as in situ, with no evidence of invasion
  • Documentation must support the diagnosis, including biopsy results and clinical findings

Exclusion Criteria

Do NOT use D03.4 When
No specific exclusions found.

Related ICD-10 Codes

Related CPT Codes

11600CPT Code

Excision, malignant skin lesion, face, ears, scalp, neck; excised diameter excised 0.5 cm or less

Clinical Scenario

Used when excising a melanoma in situ lesion on the scalp or neck.

Documentation Requirements

Document the size of the lesion, location, and pathology results.

Specialty Considerations

Dermatologists should ensure accurate coding based on excised diameter.

ICD-10 Impact

Diagnostic & Documentation Impact

Enhanced Specificity

ICD-10 Improvements

The transition to ICD-10 has allowed for more specific coding of melanoma in situ, improving the accuracy of data collection and enhancing patient care through better tracking of disease progression.

ICD-9 vs ICD-10

The transition to ICD-10 has allowed for more specific coding of melanoma in situ, improving the accuracy of data collection and enhancing patient care through better tracking of disease progression.

Reimbursement & Billing Impact

The transition to ICD-10 has allowed for more specific coding of melanoma in situ, improving the accuracy of data collection and enhancing patient care through better tracking of disease progression.

Resources

Clinical References

  • •
    American Academy of Dermatology

Coding & Billing References

  • •
    American Academy of Dermatology

Frequently Asked Questions

What is the significance of coding melanoma in situ?

Coding melanoma in situ accurately is crucial for tracking disease progression, ensuring appropriate treatment, and facilitating research on melanoma outcomes.