ICD-10-CM Codes
C00-D49 Neoplasms
C76-C80 Malignant neoplasms of ill-defined, other secondary and unspecified sites
C78- Secondary malignant neoplasm of respiratory and digestive organs

2018 ICD-10-CM Diagnosis Code C78.4

Secondary malignant neoplasm of small intestine

2016

2017

2018

Billable/Specific Code

C78.4 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
The 2018 edition of ICD-10-CM C78.4 became effective on October 1, 2017.
This is the American ICD-10-CM version of C78.4 - other international versions of ICD-10 C78.4 may differ.

The following code(s) above C78.4 contain annotation back-references

Annotation Back-References

In this context, annotation back-references refer to codes that contain:

Applicable To annotations, or
Code Also annotations, or
Code First annotations, or
Excludes1 annotations, or
Excludes2 annotations, or
Includes annotations, or
Note annotations, or
Use Additional annotations

that may be applicable to C78.4:

C00-D49
2018 ICD-10-CM Range C00-D49
Neoplasms
Note
- Functional activity
- All neoplasms are classified in this chapter, whether they are functionally active or not. An additional code from Chapter 4 may be used, to identify functional activity associated with any neoplasm.
- Morphology [Histology]
- Chapter 2 classifies neoplasms primarily by site (topography), with broad groupings for behavior, malignant, in situ, benign, etc. The Table of Neoplasms should be used to identify the correct topography code. In a few cases, such as for malignant melanoma and certain neuroendocrine tumors, the morphology (histologic type) is included in the category and codes.
- Primary malignant neoplasms overlapping site boundaries
- A primary malignant neoplasm that overlaps two or more contiguous (next to each other) sites should be classified to the subcategory/code .8 ('overlapping lesion'), unless the combination is specifically indexed elsewhere. For multiple neoplasms of the same site that are not contiguous, such as tumors in different quadrants of the same breast, codes for each site should be assigned.
- Malignant neoplasm of ectopic tissue
- Malignant neoplasms of ectopic tissue are to be coded to the site mentioned, e.g., ectopic pancreatic malignant neoplasms are coded to pancreas, unspecified (C25.9).
Neoplasms
C78
ICD-10-CM Diagnosis Code C78
Secondary malignant neoplasm of respiratory and digestive organs
Type 1 Excludes
- secondary carcinoid tumors of liver (C7B.02)
- secondary carcinoid tumors of peritoneum (C7B.04)
Type 2 Excludes
- lymph node metastases (C77.0)
Secondary malignant neoplasm of respiratory and digestive organs

Approximate Synonyms

Cancer metastatic to duodenum
Cancer metastatic to small intestine
Secondary malignant neoplasm of duodenum

Clinical Information

The spread of cancer to the small intestine. This may be from a primary intestinal cancer, or from a cancer at a distant site.
The spread of the cancer to the small intestine. This may be from a primary intestinal cancer, or from a cancer at a distant site.

ICD-10-CM C78.4 is grouped within Diagnostic Related Group(s) (MS-DRG v35.0):

374 Digestive malignancy with mcc
375 Digestive malignancy with cc
376 Digestive malignancy without cc/mcc

Convert C78.4 to ICD-9-CM

Code History

2016 (effective 10/1/2015): New code (first year of non-draft ICD-10-CM)
2017 (effective 10/1/2016): No change
2018 (effective 10/1/2017): No change

ICD-10-CM Codes Adjacent To C78.4

C78 Secondary malignant neoplasm of respiratory and digestive organs

C78.0 Secondary malignant neoplasm of lung

C78.00 Secondary malignant neoplasm of unspecified lung

C78.01 Secondary malignant neoplasm of right lung

C78.02 Secondary malignant neoplasm of left lung

C78.1 Secondary malignant neoplasm of mediastinum

C78.2 Secondary malignant neoplasm of pleura

C78.3 Secondary malignant neoplasm of other and unspecified respiratory organs

C78.30 Secondary malignant neoplasm of unspecified respiratory organ

C78.39 Secondary malignant neoplasm of other respiratory organs

C78.4 Secondary malignant neoplasm of small intestine

C78.5 Secondary malignant neoplasm of large intestine and rectum

C78.6 Secondary malignant neoplasm of retroperitoneum and peritoneum

C78.7 Secondary malignant neoplasm of liver and intrahepatic bile duct

C78.8 Secondary malignant neoplasm of other and unspecified digestive organs

C78.80 Secondary malignant neoplasm of unspecified digestive organ

C78.89 Secondary malignant neoplasm of other digestive organs

C79 Secondary malignant neoplasm of other and unspecified sites

C79.0 Secondary malignant neoplasm of kidney and renal pelvis

C79.00 Secondary malignant neoplasm of unspecified kidney and renal pelvis

C79.01 Secondary malignant neoplasm of right kidney and renal pelvis

Reimbursement claims with a date of service on or after October 1, 2015 require the use of ICD-10-CM codes.

2018 ICD-10-CM Diagnosis Code C78.4

Secondary malignant neoplasm of small intestine

Neoplasms

Secondary malignant neoplasm of respiratory and digestive organs