2024 ICD-10-CM Diagnosis Code C78.4

Approximate Synonyms

The following clinical terms are approximate synonyms or lay terms that might be used to identify the correct diagnosis code:

• Adenocarcinoma of ileum
• Adenocarcinoma of Meckel diverticulum
• Adenocarcinoma of small intestine
• Malignant tumor of jejunum
• Malignant tumor of Meckel's diverticulum
• Malignant tumor of Meckel's diverticulum
• Metastatic adenocarcinoma to Meckel diverticulum
• Metastatic carcinoma to duodenum
• Metastatic malignant neoplasm to duodenum
• Metastatic malignant neoplasm to duodenum
• Metastatic malignant neoplasm to ileum
• Metastatic malignant neoplasm to ileum
• Metastatic malignant neoplasm to jejunum
• Metastatic malignant neoplasm to Meckel's diverticulum
• Metastatic malignant neoplasm to Meckel's diverticulum
• Metastatic malignant neoplasm to small intestine
• Metastatic malignant neoplasm to small intestine
• Metastatic malignant neoplasm to small intestine
• Neoplasm of Meckel's diverticulum
• Neoplasm of Meckel's diverticulum
• Tumor invades beyond pancreatic capsule to adjacent structures AND/OR organs
• Tumor invades beyond pancreatic capsule to duodenum

Clinical Information

• Duodenal Neoplasms

  tumors or cancer of the duodenum.

• Duodenum

  the shortest and widest portion of the small intestine adjacent to the pylorus of the stomach. it is named for having the length equal to about the width of 12 fingers.

• Jejunal Neoplasms

  tumors or cancer in the jejunum region of the small intestine (intestine, small).

• Jejunum

  the middle portion of the small intestine, between duodenum and ileum. it represents about 2/5 of the remaining portion of the small intestine below duodenum.

C78.4 is grouped with Diagnostic Related Groups - MS-DRG Mapping

Diagnostic Related Groups (DRGs) are a classification system used to group together diagnosis codes for the purpose of reimbursement and healthcare management. DRGs are used to standardize the way hospitals and other providers are paid for inpatient services. In this system patients are grouped together based on their principal diagnosis in areas referred to as Major Diagnostic Categories (MDC). Once a patient is assigned a particular diagnostic category, providers receive a predetermined payment rate for the services rendered. This reimbursement rate is often fixed and is meant to cover the cost of care for that patient. Reimbursement is also affected by the relative weight of a diagnostic related group based on the severity of a patient's illness and the associated cost of care during hospitalization.

Diagnostic related groups encourage healthcare providers to focus on quality and efficiency in patient care while managing costs effectively. The diagnosis code is present in the following groups for version MS-DRG V41.0 applicable from 10/01/2023 through 09/30/2024.

MS-DRG	MS-DRG Title	MCD	Relative Weight
374	DIGESTIVE MALIGNANCY WITH MCC	06	2.099
375	DIGESTIVE MALIGNANCY WITH CC	06	1.1983
376	DIGESTIVE MALIGNANCY WITHOUT CC/MCC	06	0.8914

The relative weight of a diagnostic related group determines the reimbursement rate based on the severity of a patient's illness and the associated cost of care during hospitalization.

Convert C78.4 to ICD-9-CM

• ICD-9-CM Code: 197.4 - Sec malig neo sm bowel

Table of Neoplasms

This code is referenced in the table of neoplasms by anatomical site. For each site there are six possible code numbers according to whether the neoplasm in question is malignant, benign, in situ, of uncertain behavior, or of unspecified nature. The description of the neoplasm will often indicate which of the six columns is appropriate.

Where such descriptors are not present, the remainder of the Index should be consulted where guidance is given to the appropriate column for each morphological (histological) variety listed. However, the guidance in the Index can be overridden if one of the descriptors mentioned above is present.

Filter table of neoplasms:

Neoplasm, neoplastic	Malignant Primary	Malignant Secondary	CaInSitu	Benign	Uncertain Behavior	Unspecified Behavior
»Neoplasm, neoplastic   »duodenojejunal junction	C17.8	C78.4	D01.49	D13.39	D37.2	D49.0
»Neoplasm, neoplastic   »duodenum	C17.0	C78.4	D01.49	D13.2	D37.2	D49.0
»Neoplasm, neoplastic   »ileum	C17.2	C78.4	D01.49	D13.39	D37.2	D49.0
»Neoplasm, neoplastic   »intestine, intestinal     »small	C17.9	C78.4	D01.40	D13.30	D37.2	D49.0
»Neoplasm, neoplastic   »intestine, intestinal     »small       »duodenum	C17.0	C78.4	D01.49	D13.2	D37.2	D49.0
»Neoplasm, neoplastic   »intestine, intestinal     »small       »ileum	C17.2	C78.4	D01.49	D13.39	D37.2	D49.0
»Neoplasm, neoplastic   »intestine, intestinal     »small       »jejunum	C17.1	C78.4	D01.49	D13.39	D37.2	D49.0
»Neoplasm, neoplastic   »jejunum	C17.1	C78.4	D01.49	D13.39	D37.2	D49.0
»Neoplasm, neoplastic   »Meckel diverticulum, malignant	C17.3	C78.4	D01.49	D13.39	D37.2	D49.0

Patient Education

Intestinal Cancer

Your small intestine is part of your digestive system. It is a long tube that connects your stomach to your large intestine. Intestinal cancer is rare, but eating a high-fat diet or having Crohn's disease, celiac disease, or a history of colonic polyps can increase your risk.

Possible signs of small intestine cancer include:

• Abdominal pain
• Weight loss for no reason
• Blood in the stool
• A lump in the abdomen

Imaging tests that create pictures of the small intestine and the area around it can help diagnose intestinal cancer and show whether it has spread.

Surgery is the most common treatment. Additional options include chemotherapy, radiation therapy, or a combination.

NIH: National Cancer Institute

[Learn More in MedlinePlus]

Code History

• FY 2024 - No Change, effective from 10/1/2023 through 9/30/2024
• FY 2023 - No Change, effective from 10/1/2022 through 9/30/2023
• FY 2022 - No Change, effective from 10/1/2021 through 9/30/2022
• FY 2021 - No Change, effective from 10/1/2020 through 9/30/2021
• FY 2020 - No Change, effective from 10/1/2019 through 9/30/2020
• FY 2019 - No Change, effective from 10/1/2018 through 9/30/2019
• FY 2018 - No Change, effective from 10/1/2017 through 9/30/2018
• FY 2017 - No Change, effective from 10/1/2016 through 9/30/2017
• FY 2016 - New Code, effective from 10/1/2015 through 9/30/2016. This was the first year ICD-10-CM was implemented into the HIPAA code set.