C49.20 - Malignant neoplasm of connective and soft tissue of unspecified lower limb, including hip

Version 2023
ICD-10:C49.20
Short Description:Malig neoplm of conn and soft tiss of unsp low limb, inc hip
Long Description:Malignant neoplasm of connective and soft tissue of unspecified lower limb, including hip
Status: Valid for Submission
Version:ICD-10-CM 2023
Code Classification:
  • Neoplasms (C00–D48)
    • Malignant neoplasms of mesothelial and soft tissue (C45-C49)
      • Malignant neoplasm of other connective and soft tissue (C49)

C49.20 is a billable ICD-10 code used to specify a medical diagnosis of malignant neoplasm of connective and soft tissue of unspecified lower limb, including hip. The code is valid during the fiscal year 2023 from October 01, 2022 through September 30, 2023 for the submission of HIPAA-covered transactions.

The following anatomical sites found in the Table of Neoplasms reference the parent code C49.2 of the current diagnosis code given the correct histological behavior: Neoplasm, neoplastic aponeurosis plantar ; Neoplasm, neoplastic connective tissue NEC ankle ; Neoplasm, neoplastic connective tissue NEC calf ; Neoplasm, neoplastic connective tissue NEC extremity lower ; Neoplasm, neoplastic connective tissue NEC foot ; Neoplasm, neoplastic connective tissue NEC heel ; Neoplasm, neoplastic connective tissue NEC hip ; etc

Unspecified diagnosis codes like C49.20 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.

Approximate Synonyms

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

Convert to ICD-9 Code

Source ICD-10 CodeTarget ICD-9 Code
C49.20171.3 - Mal neo soft tissue leg
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

The parent code C49.2 of the current diagnosis 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.

Neoplasm, neoplastic Malignant
Primary
Malignant
Secondary
CaInSitu Benign Uncertain
Behavior
Unspecified
Behavior
»Neoplasm, neoplastic
  »aponeurosis
    »plantar
C49.2C79.89D21.2D48.1D49.2
»Neoplasm, neoplastic
  »connective tissue NEC
    »ankle
C49.2C79.89D21.2D48.1D49.2
»Neoplasm, neoplastic
  »connective tissue NEC
    »calf
C49.2C79.89D21.2D48.1D49.2
»Neoplasm, neoplastic
  »connective tissue NEC
    »extremity
      »lower
C49.2C79.89D21.2D48.1D49.2
»Neoplasm, neoplastic
  »connective tissue NEC
    »foot
C49.2C79.89D21.2D48.1D49.2
»Neoplasm, neoplastic
  »connective tissue NEC
    »heel
C49.2C79.89D21.2D48.1D49.2
»Neoplasm, neoplastic
  »connective tissue NEC
    »hip
C49.2C79.89D21.2D48.1D49.2
»Neoplasm, neoplastic
  »connective tissue NEC
    »knee
C49.2C79.89D21.2D48.1D49.2
»Neoplasm, neoplastic
  »connective tissue NEC
    »leg
C49.2C79.89D21.2D48.1D49.2
»Neoplasm, neoplastic
  »connective tissue NEC
    »limb NEC
      »lower
C49.2C79.89D21.2D48.1D49.2
»Neoplasm, neoplastic
  »connective tissue NEC
    »popliteal fossa or space
C49.2C79.89D21.2D48.1D49.2
»Neoplasm, neoplastic
  »connective tissue NEC
    »thigh
C49.2C79.89D21.2D48.1D49.2
»Neoplasm, neoplastic
  »connective tissue NEC
    »toe
C49.2C79.89D21.2D48.1D49.2
»Neoplasm, neoplastic
  »fascia [See Also: Neoplasm, connective tissue]
    »plantar
C49.2C79.89D21.2D48.1D49.2

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:

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

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Code History