C79 is a non-billable/non-specific diagnosis code from the 2025 ICD-10-CM used to classify the following condition: Secondary malignant neoplasm of other and unspecified sites.
Type 1 excludes
Codes
C79.0
Secondary malignant neoplasm of kidney and renal pelvis
C79.1
Secondary malignant neoplasm of bladder and other and unspecified urinary organs
C79.2
Secondary malignant neoplasm of skin
C79.3
Secondary malignant neoplasm of brain and cerebral meninges
C79.4
Secondary malignant neoplasm of other and unspecified parts of nervous system
C79.5
Secondary malignant neoplasm of bone and bone marrow
C79.6
Secondary malignant neoplasm of ovary
C79.7
Secondary malignant neoplasm of adrenal gland
C79.8
Secondary malignant neoplasm of other specified sites
C79.9
Secondary malignant neoplasm of unspecified site
Versions
2025
No changes
2024
No changes
2023
No changes
2022
No changes
2021
No changes
2020
No changes
2019
No changes
2018
Code changed
Type 2 excludes
lymph node metastases (C77.0)
2017
Code changed
Type 1 excludes
lymph node metastases (C77.0)secondary carcinoid tumors (C7B.-)secondary neuroendocrine tumors (C7B.-)
- secondary carcinoid tumors (C7B.-)
- secondary neuroendocrine tumors (C7B.-)
Type 2 excludes
- lymph node metastases (C77.0)
2016
New code