2022

  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. 2022 ICD-10-CM Diagnosis Code C79.31

2022 ICD-10-CM Diagnosis Code C79.31

Secondary malignant neoplasm of brain

    2016 2017 2018 2019 2020 2021 2022 Billable/Specific Code
  • C79.31 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
  • The 2022 edition of ICD-10-CM C79.31 became effective on October 1, 2021.
  • This is the American ICD-10-CM version of C79.31 - other international versions of ICD-10 C79.31 may differ.
The following code(s) above C79.31 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 C79.31:
  • C00-D49
    2022 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 2022 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 brain
  • Cancer metastatic to spinal cord
  • Colorectal cancer, metastatic to brain
  • Colorectal malignant neoplasm metastatic to brain
  • Secondary malignant neoplasm of spinal cord
Clinical Information
  • A malignant neoplasm that has spread to the brain from another anatomic site or system. The majority are carcinomas (usually lung or breast carcinomas).
  • Cancer that has spread from the original (primary) tumor to the brain.
ICD-10-CM C79.31 is grouped within Diagnostic Related Group(s) (MS-DRG v39.0):
  • 054 Nervous system neoplasms with mcc
  • 055 Nervous system neoplasms without mcc

Convert C79.31 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
  • 2022 (effective 10/1/2021): No change
ICD-10-CM Codes Adjacent To C79.31
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
C79.4 Secondary malignant neoplasm of other and unspecified parts of nervous system
C79.40 Secondary malignant neoplasm of unspecified part of nervous system
C79.49 Secondary malignant neoplasm of other parts of nervous system
C79.5 Secondary malignant neoplasm of bone and bone marrow
C79.51 Secondary malignant neoplasm of bone
C79.52 Secondary malignant neoplasm of bone marrow
C79.6 Secondary malignant neoplasm of ovary
C79.60 Secondary malignant neoplasm of unspecified ovary
C79.61 Secondary malignant neoplasm of right ovary

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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