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ICD-10 Guide
ICD-10 CodesChapter 2: NeoplasmsD03

D03

Billable

Melanoma in situ

Chapter 2:Neoplasms

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

Code Description

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

Key Diagnostic Point:

Melanoma in situ (D03) refers to a localized form of melanoma where malignant cells are confined to the epidermis and have not invaded deeper layers of the skin. This condition is characterized by atypical melanocytes that exhibit abnormal growth patterns but lack the ability to metastasize. Melanoma in situ is often asymptomatic and may present as a pigmented lesion or a change in an existing mole. Early detection is crucial, as the prognosis is significantly better when treated at this stage. The most common subtype is superficial spreading melanoma, but other variants such as lentigo maligna melanoma can also present as in situ. Diagnosis typically involves a biopsy, and treatment usually consists of surgical excision with clear margins. Surveillance protocols post-treatment include regular skin examinations and patient education on self-monitoring for changes in skin lesions. The risk of progression to invasive melanoma is present, particularly if the lesion is not adequately treated, making ongoing surveillance essential.

Code Complexity Analysis

Complexity Rating: Medium

Medium Complexity

Complexity Factors

  • Differentiating between in situ and invasive melanoma
  • Understanding various melanoma subtypes
  • Documentation of lesion characteristics and treatment
  • Monitoring for recurrence or progression

Audit Risk Factors

  • Inadequate documentation of lesion characteristics
  • Failure to document treatment and follow-up care
  • Misclassification of in situ versus invasive melanoma
  • Lack of patient education records

Specialty Focus

Medical Specialties

Dermatology

Documentation Requirements

Detailed descriptions of the lesion, biopsy results, and treatment plans.

Common Clinical Scenarios

Diagnosis and treatment of atypical moles, follow-up of previously diagnosed melanoma.

Billing Considerations

Ensure clear documentation of margins and follow-up care to prevent misclassification.

Oncology

Documentation Requirements

Comprehensive treatment plans, including surgical and adjuvant therapies.

Common Clinical Scenarios

Management of melanoma patients post-surgery, monitoring for recurrence.

Billing Considerations

Documenting the patient's history and any signs of progression is critical.

Coding Guidelines

Inclusion Criteria

Use D03 When
  • According to ICD
  • 10 guidelines, D03 should be used when the melanoma is confirmed as in situ
  • It is important to document the specific type of melanoma and any treatments performed

Exclusion Criteria

Do NOT use D03 When
  • Exclusion criteria include any invasive melanoma or other skin malignancies

Related CPT Codes

11600CPT Code

Excision, malignant skin lesion

Clinical Scenario

Used when excising a melanoma in situ lesion.

Documentation Requirements

Document the size of the lesion and margins excised.

Specialty Considerations

Dermatologists should ensure clear documentation of the lesion type and treatment plan.

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 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 melanoma in situ, improving the accuracy of data collection 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 melanoma in situ, improving the accuracy of data collection and treatment tracking. This specificity aids in better patient management and research outcomes.

Resources

Clinical References

  • •
    American Academy of Dermatology

Coding & Billing References

  • •
    American Academy of Dermatology

Frequently Asked Questions

What is the difference between melanoma in situ and invasive melanoma?

Melanoma in situ is confined to the epidermis and has not invaded deeper tissues, while invasive melanoma has penetrated beyond the epidermis and may metastasize.