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v1.0.0
ICD-10 Guide
ICD-10 CodesD05.1

D05.1

Billable

Intraductal carcinoma in situ of breast

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

Code Description

ICD-10 D05.1 is a billable code used to indicate a diagnosis of intraductal carcinoma in situ of breast.

Key Diagnostic Point:

Intraductal carcinoma in situ (DCIS) of the breast is a non-invasive form of breast cancer characterized by the presence of abnormal cells within the ducts of the breast tissue. These cells have not invaded surrounding breast tissue, which differentiates DCIS from invasive breast cancer. DCIS is often detected through mammography as microcalcifications and may present with no palpable mass. The condition is considered a precursor to invasive breast cancer, and its management typically involves surgical intervention, such as lumpectomy or mastectomy, often followed by radiation therapy. The risk of progression to invasive cancer varies, with estimates suggesting that approximately 20-30% of untreated DCIS cases may progress to invasive breast cancer within 10 years. Surveillance protocols for patients diagnosed with DCIS include regular clinical examinations, imaging studies, and discussions regarding the potential need for adjuvant therapies. The prognosis for patients with DCIS is generally favorable, particularly with appropriate treatment.

Code Complexity Analysis

Complexity Rating: Medium

Medium Complexity

Complexity Factors

  • Differentiation between invasive and non-invasive carcinoma
  • Need for precise documentation of pathology reports
  • Variability in treatment protocols and follow-up care
  • Potential for progression to invasive cancer requiring careful monitoring

Audit Risk Factors

  • Inadequate documentation of pathology findings
  • Failure to capture the non-invasive nature of the carcinoma
  • Misclassification of DCIS as invasive cancer
  • Inconsistent follow-up documentation

Specialty Focus

Medical Specialties

Oncology

Documentation Requirements

Detailed pathology reports, treatment plans, and follow-up notes.

Common Clinical Scenarios

Diagnosis of DCIS following mammography, treatment planning discussions, and post-operative follow-ups.

Billing Considerations

Ensure accurate staging and grading of the carcinoma, as well as documentation of any adjuvant therapies.

Radiology

Documentation Requirements

Clear imaging reports indicating findings suggestive of DCIS, including descriptions of microcalcifications.

Common Clinical Scenarios

Mammography findings leading to biopsy recommendations and imaging follow-ups post-treatment.

Billing Considerations

Radiologists should provide detailed descriptions of imaging findings to support the diagnosis.

Coding Guidelines

Inclusion Criteria

Use D05.1 When
  • According to ICD
  • CM guidelines, D05
  • 1 should be used when documenting intraductal carcinoma in situ specifically
  • It is important to ensure that the diagnosis is confirmed by pathology and that the non
  • invasive nature of the carcinoma is clearly documented

Exclusion Criteria

Do NOT use D05.1 When
No specific exclusions found.

Related ICD-10 Codes

Related CPT Codes

19301CPT Code

Mastectomy, partial (lumpectomy)

Clinical Scenario

Used for surgical treatment of DCIS.

Documentation Requirements

Operative reports detailing the procedure and findings.

Specialty Considerations

Oncologists should ensure that the surgical approach aligns with the diagnosis.

19285CPT Code

Breast biopsy, percutaneous, needle

Clinical Scenario

Used for obtaining tissue for diagnosis of DCIS.

Documentation Requirements

Biopsy reports and imaging studies supporting the need for the procedure.

Specialty Considerations

Radiologists must document the indication for biopsy clearly.

ICD-10 Impact

Diagnostic & Documentation Impact

Enhanced Specificity

ICD-10 Improvements

The transition to ICD-10 has allowed for more specific coding of breast conditions, including DCIS, which aids in better tracking of treatment outcomes and resource allocation.

ICD-9 vs ICD-10

The transition to ICD-10 has allowed for more specific coding of breast conditions, including DCIS, which aids in better tracking of treatment outcomes and resource allocation.

Reimbursement & Billing Impact

The transition to ICD-10 has allowed for more specific coding of breast conditions, including DCIS, which aids in better tracking of treatment outcomes and resource allocation.

Resources

Clinical References

  • •
    American Cancer Society - Breast Cancer

Coding & Billing References

  • •
    American Cancer Society - Breast Cancer

Frequently Asked Questions

What is the significance of diagnosing DCIS?

Diagnosing DCIS is crucial as it indicates a risk for developing invasive breast cancer. Early detection and treatment can significantly improve outcomes.

How often should patients with DCIS be monitored?

Patients with DCIS should have regular follow-up appointments, typically every 6-12 months, including clinical exams and imaging as recommended by their healthcare provider.