ICD-10 Logo
ICDxICD-10 Medical Coding
ICD-10 Logo
ICDxICD-10 Medical Coding
ICD 10 CodesDiagnoses
ICD 10 CodesDiagnoses
ICD-10 Logo
ICDxICD-10 Medical Coding

Comprehensive ICD-10-CM code reference with AI-powered search capabilities.

© 2025 ICD Code Compass. All rights reserved.

Browse

  • All Chapters
  • All Categories
  • Diagnoses

Tools

  • AI Code Search
ICD-10-CM codes are maintained by the CDC and CMS. This tool is for reference purposes only.
v1.0.0
ICD-10 Guide
ICD-10 CodesD01.0

D01.0

Billable

Carcinoma in situ of colon

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

Code Description

ICD-10 D01.0 is a billable code used to indicate a diagnosis of carcinoma in situ of colon.

Key Diagnostic Point:

Carcinoma in situ of the colon refers to a localized form of cancer where abnormal cells are present in the innermost lining of the colon but have not invaded deeper tissues or spread to other parts of the body. This condition is often detected through screening procedures such as colonoscopy, where polyps or lesions may be biopsied. The diagnosis of carcinoma in situ indicates that the cancer is at an early stage, which is crucial for effective treatment and management. Patients diagnosed with this condition may undergo surveillance protocols that include regular colonoscopies to monitor for any changes or progression to invasive cancer. The risk of progression from carcinoma in situ to invasive cancer varies, but studies suggest that without intervention, there is a significant risk of developing colorectal cancer over time. Therefore, timely diagnosis and appropriate management are essential to prevent progression and improve patient outcomes.

Code Complexity Analysis

Complexity Rating: Medium

Medium Complexity

Complexity Factors

  • Differentiating between carcinoma in situ and invasive carcinoma
  • Understanding the staging of colorectal cancers
  • Documentation of biopsy results and pathology reports
  • Monitoring and follow-up protocols for surveillance

Audit Risk Factors

  • Inadequate documentation of biopsy results
  • Failure to document follow-up surveillance procedures
  • Misclassification of invasive versus non-invasive lesions
  • Inconsistent coding of related conditions

Specialty Focus

Medical Specialties

Gastroenterology

Documentation Requirements

Detailed pathology reports, biopsy results, and follow-up colonoscopy findings.

Common Clinical Scenarios

Patients presenting with abnormal colonoscopy findings, family history of colorectal cancer, or screening for high-risk individuals.

Billing Considerations

Ensure accurate staging and documentation of any polyps or lesions found during procedures.

Oncology

Documentation Requirements

Comprehensive treatment plans, including surgical interventions, chemotherapy, or radiation therapy if applicable.

Common Clinical Scenarios

Management of patients post-diagnosis of carcinoma in situ, including discussions on treatment options and surveillance.

Billing Considerations

Documentation of patient consent for treatment and understanding of the risks of progression.

Coding Guidelines

Inclusion Criteria

Use D01.0 When
  • According to the official coding guidelines, carcinoma in situ codes should be used when there is definitive documentation of the diagnosis from pathology reports
  • It is important to ensure that the diagnosis is not confused with benign conditions or invasive cancers

Exclusion Criteria

Do NOT use D01.0 When
No specific exclusions found.

Related ICD-10 Codes

Related CPT Codes

45378CPT Code

Colonoscopy, flexible, diagnostic

Clinical Scenario

Used during routine screening or evaluation of symptoms.

Documentation Requirements

Document indication for the procedure and findings.

Specialty Considerations

Gastroenterologists should ensure accurate reporting of findings and any biopsies taken.

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 cancer registries and enhancing the ability to track treatment outcomes and epidemiological data.

ICD-9 vs ICD-10

The transition to ICD-10 has allowed for more specific coding of carcinoma in situ, improving the accuracy of cancer registries and enhancing the ability to track treatment outcomes and epidemiological data.

Reimbursement & Billing Impact

reimbursement.

Resources

Clinical References

  • •
    American Cancer Society - Colorectal Cancer

Coding & Billing References

  • •
    American Cancer Society - Colorectal Cancer

Frequently Asked Questions

What is the significance of diagnosing carcinoma in situ?

Diagnosing carcinoma in situ is crucial as it indicates an early stage of cancer that has not yet invaded surrounding tissues. Early detection allows for timely intervention, which can prevent progression to invasive cancer and improve patient outcomes.