C17.0 is the authoritative medical code for Malignant neoplasm of duodenum. This classification is used in medical billing and clinical recording to specify the clinical criteria for malignant neoplasm of duodenum (ICD-10-CM C17.0), ensuring healthcare documentation aligns with 2026 federal coding standards.
Billing Status: YES. This is a valid, specific, and billable ICD-10-CM reference.
Sequencing, inclusion, and exclusion notes published for C17.0 in the official ICD-10-CM tabular list.
Conditions that can never be reported with this code; the two are mutually exclusive.
Conditions not covered by this code, but which may be reported alongside it when both are present.
Per official ICD-10-CM Excludes1 instructions, C17.0 must not be reported together with: malignant carcinoid tumors of the small intestine (C7A.01); Kaposi's sarcoma of gastrointestinal sites (C46.4).
Per official ICD-10-CM Excludes2 instructions, C17.0 and the following are not considered part of each other and may both be reported when both conditions are present: gastrointestinal stromal tumors (C49.A-).
Official ICD-10-CM classifications closest to C17.0 in its code family, with their registry titles.
Anatomical sites from the official ICD-10-CM Table of Neoplasms that map to this code, with the matching behavior column.