2024 ICD-10-CM Diagnosis Code C49.4

Approximate Synonyms

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

• Fibrosarcoma of spleen
• Malignant tumor of soft tissue of abdomen
• Neoplasm of blood vessel of abdomen
• Neoplasm of muscle of abdomen
• Primary angiosarcoma of abdomen
• Primary angiosarcoma of trunk
• Primary leiomyosarcoma of abdomen
• Primary liposarcoma of soft tissue of abdomen
• Primary liposarcoma of soft tissue of trunk
• Primary malignant neoplasm of blood vessel of abdomen
• Primary malignant neoplasm of blood vessel of trunk
• Primary malignant neoplasm of muscle of abdomen
• Primary malignant neoplasm of muscle of trunk
• Primary malignant neoplasm of soft tissues of abdomen
• Primary rhabdomyosarcoma of abdomen
• Primary sarcoma of soft tissues of abdomen

C49.4 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
542	PATHOLOGICAL FRACTURES AND MUSCULOSKELETAL AND CONNECTIVE TISSUE MALIGNANCY WITH MCC	08	1.8237
543	PATHOLOGICAL FRACTURES AND MUSCULOSKELETAL AND CONNECTIVE TISSUE MALIGNANCY WITH CC	08	1.0907
544	PATHOLOGICAL FRACTURES AND MUSCULOSKELETAL AND CONNECTIVE TISSUE MALIGNANCY WITHOUT CC/MCC	08	0.7675

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 C49.4 to ICD-9-CM

• ICD-9-CM Code: 171.5 - Mal neo soft tis abdomen
  Approximate Flag - The approximate mapping means there is not an exact match between the ICD-10 and ICD-9 codes and the mapped code is not a precise representation of the original code.

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   »abdomen, abdominal     »wall [See Also: Neoplasm, abdomen, wall, skin]       »connective tissue	C49.4	C79.8		D21.4	D48.1	D49.2
»Neoplasm, neoplastic   »adipose tissue [See Also: Neoplasm, connective tissue]	C49.4	C79.89		D21.9	D48.1	D49.2
»Neoplasm, neoplastic   »aorta (thoracic)     »abdominal	C49.4	C79.89		D21.4	D48.1	D49.2
»Neoplasm, neoplastic   »connective tissue NEC     »abdomen	C49.4	C79.89		D21.4	D48.1	D49.2
»Neoplasm, neoplastic   »connective tissue NEC     »abdominal wall	C49.4	C79.89		D21.4	D48.1	D49.2
»Neoplasm, neoplastic   »connective tissue NEC     »gastric	C49.4	C79.89		D21.4	D48.1	D49.2
»Neoplasm, neoplastic   »connective tissue NEC     »gastrointestinal	C49.4	C79.89		D21.4	D48.1	D49.2
»Neoplasm, neoplastic   »connective tissue NEC     »hypochondrium	C49.4	C79.89		D21.4	D48.1	D49.2
»Neoplasm, neoplastic   »connective tissue NEC     »intestinal	C49.4	C79.89		D21.4	D48.1	D49.2
»Neoplasm, neoplastic   »connective tissue NEC     »psoas muscle	C49.4	C79.89		D21.4	D48.1	D49.2
»Neoplasm, neoplastic   »connective tissue NEC     »stomach	C49.4	C79.89		D21.4	D48.1	D49.2
»Neoplasm, neoplastic   »connective tissue NEC     »umbilicus	C49.4	C79.89		D21.4	D48.1	D49.2
»Neoplasm, neoplastic   »vena cava (abdominal) (inferior)	C49.4	C79.89		D21.4	D48.1	D49.2

Patient Education

Cancer

Cancer begins in your cells, which are the building blocks of your body. Normally, your body forms new cells as you need them, replacing old cells that die. Sometimes this process goes wrong. New cells grow even when you don't need them, and old cells don't die when they should. These extra cells can form a mass called a tumor. Tumors can be benign or malignant. Benign tumors aren't cancer while malignant ones are. Cells from malignant tumors can invade nearby tissues. They can also break away and spread to other parts of the body.

Cancer is not just one disease but many diseases. There are more than 100 different types of cancer. Most cancers are named for where they start. For example, lung cancer starts in the lung, and breast cancer starts in the breast. The spread of cancer from one part of the body to another is called metastasis. Symptoms and treatment depend on the cancer type and how advanced it is. Most treatment plans may include surgery, radiation and/or chemotherapy. Some may involve hormone therapy, immunotherapy or other types of biologic therapy, or stem cell transplantation.

NIH: National Cancer Institute

[Learn More in MedlinePlus]

Connective Tissue Disorders

Your connective tissue supports many different parts of your body, such as your skin, eyes, and heart. It is like a "cellular glue" that gives your body parts their shape and helps keep them strong. It also helps some of your tissues do their work. It is made of many kinds of proteins. Cartilage and fat are types of connective tissue.

Over 200 disorders that impact connective tissue. There are different types:

• Genetic disorders, such as Ehlers-Danlos syndrome, Marfan syndrome, and osteogenesis imperfecta
• Autoimmune disorders, such as lupus and scleroderma
• Cancers, like some types of soft tissue sarcoma

Each disorder has its own symptoms and needs different treatment.

NIH: National Institute of Arthritis and Musculoskeletal and Skin Diseases

[Learn More in MedlinePlus]

Soft Tissue Sarcoma-Patient Version

Learn about soft tissue sarcoma risk factors, symptoms, tests to diagnose, factors affecting prognosis, staging, and treatment.
[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.