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C79.51 — Secondary malignant neoplasm of bone
C79.51
What this code means
Cancer that has spread to bone from a primary cancer elsewhere in the body.
Also called: bone metastases, secondary bone cancer.
When this code is used
Used for secondary malignant neoplasm of bone.
Where it sits in ICD-10-CM
Code C79.51 belongs to Chapter 2: Neoplasms, which covers codes C00–D49 in the FY2027 ICD-10-CM tabular list. The official description above is copied verbatim from the CDC/NCHS FY2027 code file.
Learn more about this condition
Related symptoms
Frequently asked questions
What is ICD-10-CM code C79.51?
C79.51 is the ICD-10-CM diagnosis code for “Secondary malignant neoplasm of bone”. Cancer that has spread to bone from a primary cancer elsewhere in the body.
When is code C79.51 used?
Used for secondary malignant neoplasm of bone. It belongs to Chapter 2 of ICD-10-CM (Neoplasms).
This guide explains ICD-10-CM codes in plain language for patients, students and other readers. It is educational information only — not coding, billing or medical advice. The code recorded for any real encounter is assigned from the full clinical documentation by the treating team and qualified coders, and only they can decide which code fits a specific case.