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Home/Diagnosis/ICD-10 Coding for Malignant Neoplasm of Colon

ICD-10 Coding for Malignant Neoplasm of Colon

C18.2
C18.4
C18.8

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

Also Known as:
Colon Cancer
Colorectal Cancer
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Key Information: ICD-10 Coding for Malignant Neoplasm of Colon

Essential facts and insights about ICD-10 Coding for Malignant Neoplasm of Colon

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

  • • Confirmed malignancy in ascending colon via imaging or biopsy.

Applicable To

  • • Adenocarcinoma of ascending colon

Important Notes

  • • Ensure specific site documentation is available.

Malignant neoplasm of transverse colon

Billable Code
C18.4
Billable

Applicable To

  • • Adenocarcinoma of transverse colon

Important Notes

  • • Ensure specific site documentation is available.

Malignant neoplasm of overlapping sites of colon

Billable Code
C18.8
Billable

Applicable To

  • • Tumor involving multiple contiguous sites

Important Notes

  • • Ensure documentation specifies overlapping sites.

Malignant neoplasm of colon, unspecified

Billable Code
C18.9
Billable

Applicable To

  • • Colon cancer, site not specified

Important Notes

  • • Encourage providers to specify the site to avoid using unspecified codes.
Ancillary Codes

Additional codes that may be used with this diagnosis

Z51.11

Encounter for antineoplastic chemotherapy

Use when the patient is receiving chemotherapy as the primary reason for the encounter.

Z51.0

Encounter for antineoplastic radiation therapy

Use when the patient is receiving radiation therapy as the primary reason for the encounter.

Frequently Asked Questions

What is the ICD-10 code for malignant neoplasm of the colon?

The ICD-10 code for malignant neoplasm of the colon varies by site, including C18.2 for ascending colon and C18.9 for unspecified site.

How should chemotherapy encounters be coded for colon cancer?

For chemotherapy encounters, sequence Z51.11 first if chemotherapy is the primary reason for the visit, followed by the specific colon cancer code.

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