2021 ICD-10-CM Code C49.9

Malignant neoplasm of connective and soft tissue, unspecified

Version 2021

Valid for Submission

C49.9 is a billable diagnosis code used to specify a medical diagnosis of malignant neoplasm of connective and soft tissue, unspecified. The code C49.9 is valid during the fiscal year 2021 from October 01, 2020 through September 30, 2021 for the submission of HIPAA-covered transactions.

The ICD-10-CM code C49.9 might also be used to specify conditions or terms like adipocytic liposarcoma, alveolar rhabdomyosarcoma, alveolar soft part sarcoma, angiosarcoma, botryoid rhabdomyosarcoma , cutaneous fibrosarcoma, etc.

The following anatomical sites found in the Table of Neoplasms apply to this code given the correct histological behavior: Neoplasm, neoplastic aponeurosis ; Neoplasm, neoplastic connective tissue NEC ; Neoplasm, neoplastic connective tissue NEC extremity ; Neoplasm, neoplastic connective tissue NEC limb NEC ; Neoplasm, neoplastic lymph, lymphatic channel NEC ; Neoplasm, neoplastic lymph, lymphatic channel NEC vessel [See Also: Neoplasm, connective tissue] ; etc

Unspecified diagnosis codes like C49.9 are acceptable when clinical information is unknown or not available about a particular condition. Although a more specific code is preferable, unspecified codes should be used when such codes most accurately reflect what is known about a patient's condition. Specific diagnosis codes should not be used if not supported by the patient's medical record.

ICD-10:C49.9
Short Description:Malignant neoplasm of connective and soft tissue, unsp
Long Description:Malignant neoplasm of connective and soft tissue, unspecified

Code Classification

Approximate Synonyms

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

Convert C49.9 to ICD-9 Code

The General Equivalency Mapping (GEM) crosswalk indicates an approximate mapping between the ICD-10 code C49.9 its ICD-9 equivalent. The approximate mapping means there is not an exact match between the ICD-10 code and the ICD-9 code and the mapped code is not a precise representation of the original code.

Table of Neoplasms

The code C49.9 is included 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.

Neoplasm, neoplastic Malignant
Primary
Malignant
Secondary
CaInSitu Benign Uncertain
Behavior
Unspecified
Behavior
»Neoplasm, neoplastic
  »aponeurosis
C49.9C79.89D21.9D48.1D49.2
»Neoplasm, neoplastic
  »connective tissue NEC
C49.9C79.89D21.9D48.1D49.2
»Neoplasm, neoplastic
  »connective tissue NEC
    »extremity
C49.9C79.89D21.9D48.1D49.2
»Neoplasm, neoplastic
  »connective tissue NEC
    »limb NEC
C49.9C79.89D21.9D48.1D49.2
»Neoplasm, neoplastic
  »lymph, lymphatic channel NEC
C49.9C79.89D21.9D48.1D49.2
»Neoplasm, neoplastic
  »lymph, lymphatic channel NEC
    »vessel [See Also: Neoplasm, connective tissue]
C49.9C79.89D21.9D48.1D49.2

Information for Patients


Cancer

Also called: Carcinoma, Malignancy, Neoplasms, Tumor

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:

Each disorder has its own symptoms and needs different treatment.

NIH: National Institute of Arthritis and Musculoskeletal and Skin Diseases


[Learn More in MedlinePlus]

Code History

  • 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 (First year ICD-10-CM implemented into the HIPAA code set)