C79 Secondary malignant neoplasm of other and unspecified sites

Category / Non-billable header 33 subcodes

Block: Malignant neoplasms of ill-defined, other secondary and unspecified sites (C76-C80)

Excludes 1 (cannot be coded together)

  • secondary carcinoid tumors (C7B.-)
  • secondary neuroendocrine tumors (C7B.-)

Subcodes

Each subcode links to a detail page with full clinical annotations.

Code Description Billable
C79..0 Secondary malignant neoplasm of kidney and renal pelvis No
C79..00 Secondary malignant neoplasm of unspecified kidney and renal pelvis Yes
C79..01 Secondary malignant neoplasm of right kidney and renal pelvis Yes
C79..02 Secondary malignant neoplasm of left kidney and renal pelvis Yes
C79..1 Secondary malignant neoplasm of bladder and other and unspecified urinary organs No
C79..10 Secondary malignant neoplasm of unspecified urinary organs Yes
C79..11 Secondary malignant neoplasm of bladder Yes
C79..19 Secondary malignant neoplasm of other urinary organs Yes
C79..2 Secondary malignant neoplasm of skin Yes
C79..3 Secondary malignant neoplasm of brain and cerebral meninges No
C79..31 Secondary malignant neoplasm of brain Yes
C79..32 Secondary malignant neoplasm of cerebral meninges Yes
C79..4 Secondary malignant neoplasm of other and unspecified parts of nervous system No
C79..40 Secondary malignant neoplasm of unspecified part of nervous system Yes
C79..49 Secondary malignant neoplasm of other parts of nervous system Yes
C79..5 Secondary malignant neoplasm of bone and bone marrow No
C79..51 Secondary malignant neoplasm of bone Yes
C79..52 Secondary malignant neoplasm of bone marrow Yes
C79..6 Secondary malignant neoplasm of ovary No
C79..60 Secondary malignant neoplasm of unspecified ovary Yes
C79..61 Secondary malignant neoplasm of right ovary Yes
C79..62 Secondary malignant neoplasm of left ovary Yes
C79..63 Secondary malignant neoplasm of bilateral ovaries Yes
C79..7 Secondary malignant neoplasm of adrenal gland No
C79..70 Secondary malignant neoplasm of unspecified adrenal gland Yes
C79..71 Secondary malignant neoplasm of right adrenal gland Yes
C79..72 Secondary malignant neoplasm of left adrenal gland Yes
C79..8 Secondary malignant neoplasm of other specified sites No
C79..81 Secondary malignant neoplasm of breast Yes
C79..82 Secondary malignant neoplasm of genital organs Yes
C79..83 Secondary malignant neoplasm of oral cavity Yes
C79..89 Secondary malignant neoplasm of other specified sites Yes
C79..9 Secondary malignant neoplasm of unspecified site Yes

Last reviewed: September 2026