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Home/Diagnosis/ICD-10 Coding for Colon Cancer

ICD-10 Coding for Colon Cancer

C18.2
C18.7

Complete ICD-10-CM coding and documentation guide for icd-10 coding for colon cancer includes clinical validation requirements, medical necessity guidelines, and coding policies.

Also Known as:
Colorectal Cancer
Bowel Cancer
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Key Information: ICD-10 Coding for Colon Cancer

Essential facts and insights about ICD-10 Coding for Colon Cancer

Use ICD-10 code C18.2 for malignant neoplasm of ascending colon, ensuring proper documentation in clinical notes.

Primary ICD-10-CM Codes

Malignant neoplasm of ascending colon

Billable Code
C18.2
Billable

Diagnostic Criteria

  • • Biopsy confirms adenocarcinoma in the ascending colon

Applicable To

  • • Adenocarcinoma of ascending colon

Important Notes

  • • Ensure documentation specifies the exact location within the colon to avoid using unspecified codes.

Malignant neoplasm of sigmoid colon

Billable Code
C18.7
Billable

Diagnostic Criteria

  • • Histology showing invasive adenocarcinoma in sigmoid colon
  • • CT scan revealing mass in sigmoid colon

Applicable To

  • • Adenocarcinoma of sigmoid colon

Important Notes

  • • Ensure documentation specifies the exact location within the colon to avoid using unspecified codes.
Ancillary Codes

Additional codes that may be used with this diagnosis

C79.51

Secondary malignant neoplasm of bone

Use when there is metastasis to the bone from primary colon cancer.

Frequently Asked Questions

What is the ICD-10 code for carcinoma of the colon?

The ICD-10 code for carcinoma of the colon varies by location: C18.2 for ascending colon, C18.7 for sigmoid colon, and C18.9 for unspecified site.

How should carcinoma of the colon be documented?

Documentation should include the specific tumor location, histologic grade, and staging to ensure accurate coding and treatment planning.

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