Skip to main content

C17.8 vs D13.39

C17.8 (Malignant neoplasm of overlapping sites of small intestine) compared with D13.39 (Benign neoplasm of other parts of small intestine), from the official CMS tabular data. C17.8 and D13.39 name the same anatomical site (duodenojejunal junction) with a different neoplasm behavior. MedCoder-derived

Relationship

Informational

Neoplasm table relationship

C17.8
Malignant neoplasm of overlapping sites of small intestine
↔
D13.39
Benign neoplasm of other parts of small intestine

Same anatomical site, different neoplasm behavior.

Same site — benign neoplasm (duodenojejunal junction)

The behavior documented for the site — malignant primary, secondary, carcinoma in situ, benign, uncertain or unspecified — decides which column of the neoplasm table, and therefore which code, applies.

Source: CMS Table of Neoplasms

Can these codes be reported together?

Same site, different neoplasm behavior. C17.8 and D13.39 name the same anatomical site (duodenojejunal junction) with a different neoplasm behavior.

From the CMS/CDC Table of Neoplasms: the behavior documented for that site — malignant primary, secondary, carcinoma in situ, benign, uncertain or unspecified — decides which column, and therefore which code, applies.

Side by side

C17.8Malignant neoplasm of overlapping sites of small intestineD13.39Benign neoplasm of other parts of small intestine
Billing statusBillableBillable
ClassificationC00-D49 — NeoplasmsC00-D49 — Neoplasms
DefinitionMalignant neoplasm of overlapping sites of small intestine is a billable ICD-10-CM diagnosis code (C17.8).Benign neoplasm of other parts of small intestine is a billable ICD-10-CM diagnosis code (D13.39).
Edit this comparisonCheck a whole claim

Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources