C17.1
BillableMalignant neoplasm of jejunum
HCC Category Mapping
V28HCC 20 — Lung and Other Severe Cancers
0.000V24HCC 9 — Lung and Other Severe Cancers
0.973ESRDHCC 9 — Lung and Other Severe Cancers
0.000RxHCCHCC 22 — Cancer, Other Specified Sites
0.000What This Code Means
Cancer that develops in the jejunum, which is the middle section of the small intestine.
Coding Tips
- •Small intestine cancers are rare; ensure histological type is documented (adenocarcinoma, sarcoma, lymphoma, etc.)
- •Verify this is not a metastatic lesion from another primary site
Clinical Significance
Malignant neoplasm of the jejunum is rare, representing a small fraction of all gastrointestinal cancers. The jejunum is the middle segment of the small intestine, and cancers here are often diagnosed late due to vague, nonspecific symptoms. Despite their rarity, jejunal cancers carry significant morbidity and require surgical resection, making accurate coding important for reflecting the true resource needs of these patients.
Documentation Requirements
- ✓Documentation confirming jejunum as the primary tumor location
- ✓Histological type (adenocarcinoma, sarcoma, lymphoma, neuroendocrine)
- ✓Confirmation of primary versus metastatic disease
- ✓Any predisposing conditions (Crohn disease, celiac disease, Peutz-Jeghers syndrome)
- ✓Stage of disease and surgical findings
Commonly Confused Codes
C17.0 — Duodenum: the duodenum is the first segment; the jejunum begins at the ligament of TreitzC17.2 — Ileum: the ileum is the distal segment; boundaries between jejunum and ileum may be unclear on imagingC17.9 — Small intestine, unspecified: use C17.1 when jejunum is specifically documentedC83.- — Non-Hodgkin lymphoma: primary intestinal lymphoma may present in the jejunum but is coded to lymphoma categories
Code Hierarchy
└C17Malignant neoplasm of small intestine└C17.1Malignant neoplasm of jejunum
└C17.1Malignant neoplasm of jejunum