C18.9ICD-10-CM

Malignant neoplasm of colon, unspecified

Billable

Chapter

C00-D49

Neoplasms

Billable

Yes

Valid as submitted on a claim line

Common pairings

2 CPT codes

99215, 45380

What the documentation has to carry

Specify the segment when the pathology report names it. C18.0 through C18.7 support staging and site-specific coverage.

Commonly paired CPT codes

9921545380

Pairings are typical, not a coverage determination. Check the payer policy for the line.

Find the specificity
before the payer does

TruRev validates diagnosis specificity, sequencing, and medical necessity at charge entry, then routes what fails to a certified coder instead of the clearinghouse.

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This page is a free reference for billing and coding teams and is not coding, legal, or clinical advice. Code selection depends on the documentation in the record and on the policy of the payer being billed. Verify every code, instructional note, and sequencing rule against the current ICD-10-CM files and the Official Guidelines for Coding and Reporting for the applicable date of service. ICD-10-CM is maintained by the CDC's National Center for Health Statistics and published by CMS. CPT is a registered trademark of the American Medical Association. TruCare is not affiliated with CMS, NCHS, the AHA, or the AMA.

Malignant neoplasm of colon, unspecified

What the documentation has to carry

Find the specificitybefore the payer does

Find the specificity
before the payer does