ICD-10-CM Codes
C00-D49 Neoplasms
C76-C80 Malignant neoplasms of ill-defined, other secondary and unspecified sites
C79- Secondary malignant neoplasm of other and unspecified sites

2018 ICD-10-CM Diagnosis Code C79.31

Secondary malignant neoplasm of brain

2016

2017

2018

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 2018 edition of ICD-10-CM C79.31 became effective on October 1, 2017.
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
2018 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
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 v35.0):

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

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.

2018 ICD-10-CM Diagnosis Code C79.31

Secondary malignant neoplasm of brain

Neoplasms

Secondary malignant neoplasm of other and unspecified sites