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ICD-10 Guide
ICD-10 CodesD04.1

D04.1

Billable

Carcinoma in situ of skin of eyelid, including canthus

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

Code Description

ICD-10 D04.1 is a billable code used to indicate a diagnosis of carcinoma in situ of skin of eyelid, including canthus.

Key Diagnostic Point:

Carcinoma in situ of the skin of the eyelid, including the canthus, is a non-invasive form of skin cancer characterized by the abnormal growth of cells in the epidermis. This condition is often associated with sun exposure and can manifest as a persistent, non-healing sore, a scaly patch, or a change in the appearance of the skin. The eyelid is a particularly sensitive area, and lesions here can lead to complications if not treated promptly. Diagnosis typically involves a biopsy to confirm the presence of atypical keratinocytes. Surveillance protocols for patients diagnosed with carcinoma in situ of the eyelid include regular dermatological examinations to monitor for any changes in the lesion or the development of new lesions. The risk of progression to invasive carcinoma is present, particularly in cases where the lesion is left untreated or if there are multiple lesions. Treatment options may include surgical excision, cryotherapy, or topical chemotherapy, depending on the size and location of the carcinoma. Early detection and intervention are crucial to prevent progression and ensure optimal outcomes.

Code Complexity Analysis

Complexity Rating: Medium

Medium Complexity

Complexity Factors

  • Requires precise documentation of the location and type of carcinoma.
  • Differentiation from other skin lesions is necessary.
  • Potential for multiple lesions complicates coding.
  • Need for accurate staging and grading of the carcinoma.

Audit Risk Factors

  • Inadequate documentation of the biopsy results.
  • Failure to specify the exact location of the carcinoma.
  • Lack of follow-up documentation post-treatment.
  • Misclassification of the lesion type.

Specialty Focus

Medical Specialties

Dermatology

Documentation Requirements

Detailed clinical notes including lesion size, location, and biopsy results.

Common Clinical Scenarios

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

Billing Considerations

Ensure clear documentation of the treatment plan and patient education regarding sun protection.

Ophthalmology

Documentation Requirements

Notes on visual function and any impact on eyelid movement or appearance.

Common Clinical Scenarios

Management of eyelid lesions, surgical interventions for cosmetic or functional restoration.

Billing Considerations

Document any potential impact on vision and the need for interdisciplinary care.

Coding Guidelines

Inclusion Criteria

Use D04.1 When
  • Follow the official ICD
  • CM coding guidelines, ensuring accurate documentation of the diagnosis, treatment, and follow
  • up care
  • Include specific details about the lesion's characteristics and any relevant patient history

Exclusion Criteria

Do NOT use D04.1 When
No specific exclusions found.

Related ICD-10 Codes

Related CPT Codes

11600CPT Code

Excision, malignant skin lesion, face, ears, eyelids

Clinical Scenario

Used when excising a carcinoma in situ from the eyelid.

Documentation Requirements

Document the size of the lesion and the method of excision.

Specialty Considerations

Ensure coordination between dermatology and ophthalmology for optimal patient care.

ICD-10 Impact

Diagnostic & Documentation Impact

Enhanced Specificity

ICD-10 Improvements

The transition to ICD-10 has allowed for more specific coding of carcinoma in situ, improving the accuracy of data collection and treatment tracking for skin cancers.

ICD-9 vs ICD-10

The transition to ICD-10 has allowed for more specific coding of carcinoma in situ, improving the accuracy of data collection and treatment tracking for skin cancers.

Reimbursement & Billing Impact

The transition to ICD-10 has allowed for more specific coding of carcinoma in situ, improving the accuracy of data collection and treatment tracking for skin cancers.

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 of the eyelid?

Carcinoma in situ of the eyelid is significant due to its potential to progress to invasive cancer if left untreated. It requires careful monitoring and appropriate treatment to prevent complications.