2021

  1. ICD-10-CM Codes
    2. ›
  2. C00-D49 Neoplasms
    3. ›
  3. C76-C80 Malignant neoplasms of ill-defined, other secondary and unspecified sites
    4. ›
  4. C79- Secondary malignant neoplasm of other and unspecified sites
    5. ›
  5. 2021 ICD-10-CM Diagnosis Code C79.00

2021 ICD-10-CM Diagnosis Code C79.00

Secondary malignant neoplasm of unspecified kidney and renal pelvis

    2016 2017 2018 2019 2020 2021 Billable/Specific Code
  • C79.00 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
  • Short description: Secondary malignant neoplasm of unsp kidney and renal pelvis
  • The 2021 edition of ICD-10-CM C79.00 became effective on October 1, 2020.
  • This is the American ICD-10-CM version of C79.00 - other international versions of ICD-10 C79.00 may differ.
The following code(s) above C79.00 contain annotation back-references
Annotation Back-References
In this context, annotation back-references refer to codes that contain:
  • Applicable To annotations, or
  • Code Also annotations, or
  • Code First annotations, or
  • Excludes1 annotations, or
  • Excludes2 annotations, or
  • Includes annotations, or
  • Note annotations, or
  • Use Additional annotations
that may be applicable to C79.00:
  • C00-D49
    2021 ICD-10-CM Range C00-D49

    Neoplasms

    Note
    • Functional activity
    • All neoplasms are classified in this chapter, whether they are functionally active or not. An additional code from Chapter 4 may be used, to identify functional activity associated with any neoplasm.
    • Morphology [Histology]
    • Chapter 2 classifies neoplasms primarily by site (topography), with broad groupings for behavior, malignant, in situ, benign, etc. The Table of Neoplasms should be used to identify the correct topography code. In a few cases, such as for malignant melanoma and certain neuroendocrine tumors, the morphology (histologic type) is included in the category and codes.
    • Primary malignant neoplasms overlapping site boundaries
    • A primary malignant neoplasm that overlaps two or more contiguous (next to each other) sites should be classified to the subcategory/code .8 ('overlapping lesion'), unless the combination is specifically indexed elsewhere. For multiple neoplasms of the same site that are not contiguous, such as tumors in different quadrants of the same breast, codes for each site should be assigned.
    • Malignant neoplasm of ectopic tissue
    • Malignant neoplasms of ectopic tissue are to be coded to the site mentioned, e.g., ectopic pancreatic malignant neoplasms are coded to pancreas, unspecified (C25.9).
    Neoplasms
  • C79
    ICD-10-CM Diagnosis Code C79

    Secondary malignant neoplasm of other and unspecified sites

      2016 2017 2018 2019 2020 2021 Non-Billable/Non-Specific Code
    Type 1 Excludes
    • secondary carcinoid tumors (C7B.-)
    • secondary neuroendocrine tumors (C7B.-)
    Secondary malignant neoplasm of other and unspecified sites
Approximate Synonyms
  • Cancer metastatic to kidney
  • Cancer metastatic to kidney and renal pelvis
  • Cancer metastatic to kidney, adenocarcinoma
  • Cancer metastatic to kidney, small cell
  • Cancer metastatic to kidney, squamous cell
  • Cancer metastatic to kidney, undiffer lg cell
  • Cancer metastatic to kidney, undifferentiated lg cell
  • Melanoma eye, metastatic to kidney
  • Melanoma, metastatic to kidney
  • Secondary adenocarcinoma of kidney
  • Secondary malignant melanoma of kidney
  • Secondary malignant melanoma of kidney from eye
  • Secondary malignant neoplasm of kidney
  • Secondary malignant neoplasm of kidney and renal pelvis
  • Secondary small cell carcinoma of kidney
  • Secondary squamous cell carcinoma of kidney
  • Secondary undifferentiated large cell malignant neoplasm of kidney
ICD-10-CM C79.00 is grouped within Diagnostic Related Group(s) (MS-DRG v38.0):
  • 656 Kidney and ureter procedures for neoplasm with mcc
  • 657 Kidney and ureter procedures for neoplasm with cc
  • 658 Kidney and ureter procedures for neoplasm without cc/mcc
  • 686 Kidney and urinary tract neoplasms with mcc
  • 687 Kidney and urinary tract neoplasms with cc
  • 688 Kidney and urinary tract neoplasms without cc/mcc

Convert C79.00 to ICD-9-CM

Code History
  • 2016 (effective 10/1/2015): New code (first year of non-draft ICD-10-CM)
  • 2017 (effective 10/1/2016): No change
  • 2018 (effective 10/1/2017): No change
  • 2019 (effective 10/1/2018): No change
  • 2020 (effective 10/1/2019): No change
  • 2021 (effective 10/1/2020): No change
ICD-10-CM Codes Adjacent To C79.00
C78.39 Secondary malignant neoplasm of other respiratory organs
C78.4 Secondary malignant neoplasm of small intestine
C78.5 Secondary malignant neoplasm of large intestine and rectum
C78.6 Secondary malignant neoplasm of retroperitoneum and peritoneum
C78.7 Secondary malignant neoplasm of liver and intrahepatic bile duct
C78.8 Secondary malignant neoplasm of other and unspecified digestive organs
C78.80 Secondary malignant neoplasm of unspecified digestive organ
C78.89 Secondary malignant neoplasm of other digestive organs
C79 Secondary malignant neoplasm of other and unspecified sites
C79.0 Secondary malignant neoplasm of kidney and renal pelvis
C79.00 Secondary malignant neoplasm of unspecified kidney and renal pelvis
C79.01 Secondary malignant neoplasm of right kidney and renal pelvis
C79.02 Secondary malignant neoplasm of left kidney and renal pelvis
C79.1 Secondary malignant neoplasm of bladder and other and unspecified urinary organs
C79.10 Secondary malignant neoplasm of unspecified urinary organs
C79.11 Secondary malignant neoplasm of bladder
C79.19 Secondary malignant neoplasm of other urinary organs
C79.2 Secondary malignant neoplasm of skin
C79.3 Secondary malignant neoplasm of brain and cerebral meninges
C79.31 Secondary malignant neoplasm of brain
C79.32 Secondary malignant neoplasm of cerebral meninges

Reimbursement claims with a date of service on or after October 1, 2015 require the use of ICD-10-CM codes.

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