ICD-10-CM Diagnosis Code C79.5 - Secondary malignant neoplasm of bone and bone marrow (original) (raw)

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ICD List 2025-2026 Edition

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Secondary malignant neoplasm of bone and bone marrow

ICD-10-CM Code:

C79.5

ICD-10 Code for:

Secondary malignant neoplasm of bone and bone marrow

Is Billable?

Not Valid for Submission

Code Navigator:

C79.5 is a non-specific and non-billable diagnosis code code, consider using a code with a higher level of specificity from the list below for a diagnosis of secondary malignant neoplasm of bone and bone marrow. The code is not specific and is NOT valid for the year 2026 for the submission of HIPAA-covered transactions. Category or Header define the heading of a category of codes that may be further subdivided by the use of 4th, 5th, 6th or 7th characters.

The following anatomical sites found in the Table of Neoplasms reference this diagnosis code given the correct histological behavior: Neoplasm, neoplastic femur (any part) .

Non-specific codes like C79.5 require more digits to indicate the appropriate level of specificity. Consider using any of the following billable codes with a higher level of specificity when coding for secondary malignant neoplasm of bone and bone marrow:

Use C79.51 for Secondary malignant neoplasm of bone

Use C79.52 for Secondary malignant neoplasm of bone marrow

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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 »femur (any part) C40.2 C79.5 D16.2

Bone Cancer

Cancer that starts in a bone is uncommon. Cancer that has spread to the bone from another part of the body is more common.

There are three types of bone cancer:

The most common symptom of bone cancer is pain. Other symptoms vary, depending on the location and size of the cancer. Surgery is often the main treatment for bone cancer. Other treatments may include amputation, chemotherapy, and radiation therapy. Because bone cancer can come back after treatment, regular follow-up visits are important.

NIH: National Cancer Institute

[Learn More in MedlinePlus]

Bone Marrow Diseases

Bone marrow is the spongy tissue inside some of your bones, such as your hip and thigh bones. It contains stem cells. The stem cells can develop into the red blood cells that carry oxygen through your body, the white blood cells that fight infections, and the platelets that help with blood clotting.

With bone marrow disease, there are problems with the stem cells or how they develop:

Causes of bone marrow diseases include genetics and environmental factors. Tests for bone marrow diseases include blood and bone marrow tests. Treatments depend on the disorder and how severe it is. They might involve medicines, blood transfusions or a bone marrow transplant.

[Learn More in MedlinePlus]