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ICD-10 Guide
ICD-10 CodesD04.10

D04.10

Billable

Carcinoma in situ of skin of unspecified eyelid, including canthus

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

Code Description

ICD-10 D04.10 is a billable code used to indicate a diagnosis of carcinoma in situ of skin of unspecified eyelid, including canthus.

Key Diagnostic Point:

Carcinoma in situ of the skin of the eyelid, including the canthus, represents a localized form of skin cancer where abnormal cells are present but have not invaded deeper tissues. This condition is often characterized by the presence of atypical keratinocytes confined to the epidermis. The eyelid is a common site for skin cancers due to its exposure to ultraviolet light and other environmental factors. Patients may present with a variety of symptoms, including a persistent lesion, changes in skin color, or a non-healing sore. Diagnosis typically involves a biopsy to confirm the presence of carcinoma in situ. Early detection and treatment are crucial to prevent progression to invasive carcinoma, which can lead to more severe complications. Surveillance protocols often include regular skin examinations and monitoring for any changes in the lesion's appearance. The risk of progression to invasive cancer varies based on factors such as the size and location of the lesion, as well as the patient's overall health and history of skin cancer.

Code Complexity Analysis

Complexity Rating: Medium

Medium Complexity

Complexity Factors

  • Variability in clinical presentation and symptoms
  • Need for precise documentation of lesion characteristics
  • Differentiation from other skin lesions
  • Potential for progression to invasive carcinoma

Audit Risk Factors

  • Inadequate documentation of lesion characteristics
  • Failure to document biopsy results
  • Misclassification of the lesion type
  • Inconsistent follow-up documentation

Specialty Focus

Medical Specialties

Dermatology

Documentation Requirements

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

Common Clinical Scenarios

Diagnosis and management of skin lesions, including biopsies and excisions.

Billing Considerations

Ensure accurate documentation of the lesion's size, location, and any changes over time.

Ophthalmology

Documentation Requirements

Documentation of ocular examination findings and any associated symptoms.

Common Clinical Scenarios

Management of eyelid lesions and coordination with dermatology for treatment.

Billing Considerations

Considerations for eyelid function and cosmetic outcomes in treatment planning.

Coding Guidelines

Inclusion Criteria

Use D04.10 When
  • Follow official ICD
  • 10 coding guidelines, ensuring accurate documentation of the diagnosis, treatment, and any relevant patient history
  • Include details about the lesion's characteristics and any biopsy results

Exclusion Criteria

Do NOT use D04.10 When
No specific exclusions found.

Related ICD-10 Codes

Related CPT Codes

11600CPT Code

Excision, malignant skin lesion

Clinical Scenario

Used when excising a carcinoma in situ from the eyelid.

Documentation Requirements

Document the size of the lesion and the margins excised.

Specialty Considerations

Ensure coordination between dermatology and ophthalmology for eyelid lesions.

ICD-10 Impact

Diagnostic & Documentation Impact

Enhanced Specificity

ICD-10 Improvements

The transition to ICD-10 has allowed for more specific coding of skin cancers, improving the accuracy of data collection and reimbursement processes.

ICD-9 vs ICD-10

The transition to ICD-10 has allowed for more specific coding of skin cancers, improving the accuracy of data collection and reimbursement processes.

Reimbursement & Billing Impact

reimbursement processes.

Resources

Clinical References

  • •
    American Academy of Dermatology

Coding & Billing References

  • •
    American Academy of Dermatology

Frequently Asked Questions

What is the significance of carcinoma in situ?

Carcinoma in situ is a critical diagnosis as it indicates the presence of abnormal cells that have not invaded surrounding tissues. Early detection and treatment are essential to prevent progression to invasive cancer.