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ICD-10 Guide
ICD-10 CodesD04.71

D04.71

Billable

Carcinoma in situ of skin of right lower limb, including hip

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

Code Description

ICD-10 D04.71 is a billable code used to indicate a diagnosis of carcinoma in situ of skin of right lower limb, including hip.

Key Diagnostic Point:

Carcinoma in situ (CIS) of the skin is a non-invasive form of skin cancer characterized by the presence of abnormal cells confined to the epidermis. In the case of D04.71, the carcinoma is specifically located on the right lower limb, including the hip area. This condition is often associated with prolonged sun exposure, fair skin, and a history of skin lesions. Patients may present with various skin changes, including scaly patches, non-healing sores, or changes in existing moles. Diagnosis typically involves a biopsy to confirm the presence of atypical keratinocytes. While CIS is not life-threatening, it has the potential to progress to invasive squamous cell carcinoma if left untreated. Therefore, early detection and management are crucial. Treatment options may include surgical excision, cryotherapy, or topical chemotherapy. Regular follow-up and skin surveillance are essential to monitor for any signs of progression or new lesions.

Code Complexity Analysis

Complexity Rating: Medium

Medium Complexity

Complexity Factors

  • Specificity of the anatomical location (right lower limb, including hip)
  • Need for accurate documentation of biopsy results
  • Differentiation from other skin lesions
  • Potential for progression to invasive cancer

Audit Risk Factors

  • Inadequate documentation of biopsy results
  • Failure to document follow-up care
  • Misclassification of the lesion type
  • Inconsistent coding of treatment modalities

Specialty Focus

Medical Specialties

Dermatology

Documentation Requirements

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

Common Clinical Scenarios

Diagnosis and treatment of skin lesions, follow-up for skin cancer surveillance.

Billing Considerations

Ensure accurate documentation of the lesion's characteristics and location.

Oncology

Documentation Requirements

Comprehensive treatment plans, including surgical and non-surgical interventions.

Common Clinical Scenarios

Management of skin cancers, including CIS and its progression.

Billing Considerations

Document any multidisciplinary approaches to treatment.

Coding Guidelines

Inclusion Criteria

Use D04.71 When
  • According to ICD
  • 10 guidelines, D04
  • 71 should be used when the carcinoma is confirmed as in situ and specifically located on the right lower limb
  • Documentation must support the diagnosis and treatment plan

Exclusion Criteria

Do NOT use D04.71 When
No specific exclusions found.

Related ICD-10 Codes

Related CPT Codes

11100CPT Code

Biopsy of skin, excisional

Clinical Scenario

Used when a biopsy is performed to confirm CIS.

Documentation Requirements

Document the site, size, and method of biopsy.

Specialty Considerations

Dermatologists should ensure detailed lesion descriptions.

ICD-10 Impact

Diagnostic & Documentation Impact

Enhanced Specificity

ICD-10 Improvements

The transition to ICD-10 has allowed for more specific coding of skin conditions, improving the accuracy of diagnoses and treatment tracking for conditions like D04.71.

ICD-9 vs ICD-10

The transition to ICD-10 has allowed for more specific coding of skin conditions, improving the accuracy of diagnoses and treatment tracking for conditions like D04.71.

Reimbursement & Billing Impact

The transition to ICD-10 has allowed for more specific coding of skin conditions, improving the accuracy of diagnoses and treatment tracking for conditions like D04.71.

Resources

Clinical References

  • •
    American Academy of Dermatology

Coding & Billing References

  • •
    American Academy of Dermatology

Frequently Asked Questions

What is carcinoma in situ?

Carcinoma in situ is a non-invasive cancer where abnormal cells are present but have not spread beyond the original tissue layer.

How is carcinoma in situ treated?

Treatment options include surgical excision, cryotherapy, and topical chemotherapy, depending on the lesion's characteristics.