2022 ICD-10-CM Code C79.31

Secondary malignant neoplasm of brain

Version 2021

Valid for Submission

ICD-10:C79.31
Short Description:Secondary malignant neoplasm of brain
Long Description:Secondary malignant neoplasm of brain

Code Classification

  • Neoplasms (C00–D48)
    • Malignant neoplasms of ill-defined, other secondary and unspecified sites (C76-C80)
      • Secondary malignant neoplasm of other and unspecified sites (C79)

C79.31 is a billable diagnosis code used to specify a medical diagnosis of secondary malignant neoplasm of brain. The code C79.31 is valid during the fiscal year 2022 from October 01, 2021 through September 30, 2022 for the submission of HIPAA-covered transactions.

The ICD-10-CM code C79.31 might also be used to specify conditions or terms like malignant neoplasm of basal ganglia, malignant neoplasm of cerebellum, malignant neoplasm of cerebral ventricles, malignant neoplasm of frontal lobe, malignant neoplasm of occipital lobe , malignant neoplasm of parietal lobe, etc.

The following anatomical sites found in the Table of Neoplasms apply to this code given the correct histological behavior: basal ganglia ; basis pedunculi ; brain NEC ; brain NEC basal ganglia ; brain NEC cerebellopontine angle ; brain NEC cerebellum NOS ; brain NEC cerebrum ; etc

Approximate Synonyms

The following clinical terms are approximate synonyms or lay terms that might be used to identify the correct diagnosis code:

Convert C79.31 to ICD-9 Code

The General Equivalency Mapping (GEM) crosswalk indicates an approximate mapping between the ICD-10 code C79.31 its ICD-9 equivalent. The approximate mapping means there is not an exact match between the ICD-10 code and the ICD-9 code and the mapped code is not a precise representation of the original code.

Table of Neoplasms

The code C79.31 is included in the table of neoplasms by anatomical site. For each site there are six possible code numbers according to whether the neoplasm in question is malignant, benign, in situ, of uncertain behavior, or of unspecified nature. The description of the neoplasm will often indicate which of the six columns is appropriate.

Where such descriptors are not present, the remainder of the Index should be consulted where guidance is given to the appropriate column for each morphological (histological) variety listed. However, the guidance in the Index can be overridden if one of the descriptors mentioned above is present.

Neoplasm, neoplastic Malignant
Primary
Malignant
Secondary
CaInSitu Benign Uncertain
Behavior
Unspecified
Behavior
»basal ganglia
C71.0C79.31D33.0D43.0D49.6
»basis pedunculi
C71.7C79.31D33.1D43.1D49.6
»brain NEC
C71.9C79.31D33.2D43.2D49.6
»brain NEC
  »basal ganglia
C71.0C79.31D33.0D43.0D49.6
»brain NEC
  »cerebellopontine angle
C71.6C79.31D33.1D43.1D49.6
»brain NEC
  »cerebellum NOS
C71.6C79.31D33.1D43.1D49.6
»brain NEC
  »cerebrum
C71.0C79.31D33.0D43.0D49.6
»brain NEC
  »choroid plexus
C71.7C79.31D33.1D43.1D49.6
»brain NEC
  »corpus callosum
C71.8C79.31D33.2D43.2D49.6
»brain NEC
  »corpus striatum
C71.0C79.31D33.0D43.0D49.6
»brain NEC
  »cortex (cerebral)
C71.0C79.31D33.0D43.0D49.6
»brain NEC
  »frontal lobe
C71.1C79.31D33.0D43.0D49.6
»brain NEC
  »globus pallidus
C71.0C79.31D33.0D43.0D49.6
»brain NEC
  »hippocampus
C71.2C79.31D33.0D43.0D49.6
»brain NEC
  »hypothalamus
C71.0C79.31D33.0D43.0D49.6
»brain NEC
  »internal capsule
C71.0C79.31D33.0D43.0D49.6
»brain NEC
  »medulla oblongata
C71.7C79.31D33.1D43.1D49.6
»brain NEC
  »midbrain
C71.7C79.31D33.1D43.1D49.6
»brain NEC
  »occipital lobe
C71.4C79.31D33.0D43.0D49.6
»brain NEC
  »overlapping lesion
C71.8C79.31
»brain NEC
  »parietal lobe
C71.3C79.31D33.0D43.0D49.6
»brain NEC
  »peduncle
C71.7C79.31D33.1D43.1D49.6
»brain NEC
  »pons
C71.7C79.31D33.1D43.1D49.6
»brain NEC
  »stem
C71.7C79.31D33.1D43.1D49.6
»brain NEC
  »tapetum
C71.8C79.31D33.2D43.2D49.6
»brain NEC
  »temporal lobe
C71.2C79.31D33.0D43.0D49.6
»brain NEC
  »thalamus
C71.0C79.31D33.0D43.0D49.6
»brain NEC
  »uncus
C71.2C79.31D33.0D43.0D49.6
»brain NEC
  »ventricle (floor)
C71.5C79.31D33.0D43.0D49.6
»brain NEC
  »ventricle (floor)
    »fourth
C71.7C79.31D33.1D43.1D49.6
»cerebellopontine (angle)
C71.6C79.31D33.1D43.1D49.6
»cerebellum, cerebellar
C71.6C79.31D33.1D43.1D49.6
»cerebrum, cerebra (cortex) (hemisphere) (white matter)
C71.0C79.31D33.0D43.0D49.6
»cerebrum, cerebra (cortex) (hemisphere) (white matter)
  »peduncle
C71.7C79.31D33.1D43.1D49.6
»cerebrum, cerebra (cortex) (hemisphere) (white matter)
  »ventricle
C71.5C79.31D33.0D43.0D49.6
»cerebrum, cerebra (cortex) (hemisphere) (white matter)
  »ventricle
    »fourth
C71.7C79.31D33.1D43.1D49.6
»choroid
  »plexus
C71.5C79.31D33.0D43.0D49.6
»corpus
  »callosum, brain
C71.0C79.31D33.2D43.2D49.6
»corpus
  »striatum, cerebrum
C71.0C79.31D33.0D43.0D49.6
»cortex
  »cerebral
C71.0C79.31D33.0D43.0D49.6
»cranial (fossa, any)
C71.9C79.31D33.2D43.2D49.6
»ependyma (brain)
C71.5C79.31D33.0D43.0D49.6
»ependyma (brain)
  »fourth ventricle
C71.7C79.31D33.1D43.1D49.6
»fossa (of)
C71.9C79.31D33.2D43.2D49.6
»fossa (of)
  »anterior (cranial)
C71.9C79.31D33.2D43.2D49.6
»fossa (of)
  »cranial
C71.9C79.31D33.2D43.2D49.6
»fossa (of)
  »middle (cranial)
C71.9C79.31D33.2D43.2D49.6
»fossa (of)
  »posterior (cranial)
C71.9C79.31D33.2D43.2D49.6
»frontal
  »lobe, brain
C71.1C79.31D33.0D43.0D49.6
»frontal
  »pole
C71.1C79.31D33.0D43.0D49.6
»ganglia [See Also: Neoplasm, nerve, peripheral]
  »basal
C71.0C79.31D33.0D43.0D49.6
»globus pallidus
C71.0C79.31D33.0D43.0D49.6
»hemisphere, cerebral
C71.0C79.31D33.0D43.0D49.6
»hippocampus, brain
C71.2C79.31D33.0D43.0D49.6
»hypothalamus
C71.0C79.31D33.0D43.0D49.6
»insula
C71.0C79.31D33.0D43.0D49.6
»insular tissue (pancreas)
  »brain
C71.0C79.31D33.0D43.0D49.6
»internal
C71.0C79.31D33.0D43.0D49.6
»internal
  »capsule
C71.0C79.31D33.0D43.0D49.6
»intracranial NEC
C71.9C79.31D33.2D43.2D49.6
»island of Reil
C71.0C79.31D33.0D43.0D49.6
»medulla
  »oblongata
C71.7C79.31D33.1D43.1D49.6
»midbrain
C71.7C79.31D33.1D43.1D49.6
»motor tract
  »brain
C71.9C79.31D33.2D43.2D49.6
»occipital
  »lobe or pole, brain
C71.4C79.31D33.0D43.0D49.6
»olive (brain)
C71.7C79.31D33.1D43.1D49.6
»operculum (brain)
C71.0C79.31D33.0D43.0D49.6
»pallium
C71.0C79.31D33.0D43.0D49.6
»parietal
  »lobe, brain
C71.3C79.31D33.0D43.0D49.6
»peduncle, cerebral
C71.7C79.31D33.1D43.1D49.6
»plexus
  »choroid
C71.5C79.31D33.0D43.0D49.6
»pole
C71.1C79.31D33.0D43.0D49.6
»pole
  »frontal
C71.1C79.31D33.0D43.0D49.6
»pole
  »occipital
C71.4C79.31D33.0D43.0D49.6
»pons (varolii)
C71.7C79.31D33.1D43.1D49.6
»posterior fossa (cranial)
C71.9C79.31D33.2D43.2D49.6
»putamen
C71.0C79.31D33.0D43.0D49.6
»pyramid (brain)
C71.7C79.31D33.1D43.1D49.6
»rhinencephalon
C71.0C79.31D33.0D43.0D49.6
»spine, spinal (column)
  »bulb
C71.7C79.31D33.1D43.1D49.6
»stem, brain
C71.7C79.31D33.1D43.1D49.6
»suprasellar (region)
C71.9C79.31D33.2D43.2D49.6
»supratentorial (brain) NEC
C71.0C79.31D33.0D43.0D49.6
»tapetum, brain
C71.8C79.31D33.2D43.2D49.6
»temporal
  »lobe or pole
C71.2C79.31D33.0D43.0D49.6
»thalamus
C71.0C79.31D33.0D43.0D49.6
»uncus, brain
C71.2C79.31D33.0D43.0D49.6
»ventricle (cerebral) (floor) (lateral) (third)
C71.5C79.31D33.0D43.0D49.6
»ventricle (cerebral) (floor) (lateral) (third)
  »fourth
C71.7C79.31D33.1D43.1D49.6
»vermis, cerebellum
C71.6C79.31D33.1D43.1D49.6
»white matter (central) (cerebral)
C71.0C79.31D33.0D43.0D49.6

Information for Patients


Brain Tumors

A brain tumor is a growth of abnormal cells in the tissues of the brain. Brain tumors can be benign, with no cancer cells, or malignant, with cancer cells that grow quickly. Some are primary brain tumors, which start in the brain. Others are metastatic, and they start somewhere else in the body and move to the brain.

Brain tumors can cause many symptoms. Some of the most common are

Doctors diagnose brain tumors by doing a neurologic exam and tests including an MRI, CT scan, and biopsy. Treatment options include watchful waiting, surgery, radiation therapy, chemotherapy, and targeted therapy. Targeted therapy uses drugs or other substances that attack cancer cells with less harm to normal cells. Many people get a combination of treatments.

NIH: National Cancer Institute


[Learn More in MedlinePlus]

Code History

  • FY 2021 - No Change, effective from 10/1/2020 through 9/30/2021
  • FY 2020 - No Change, effective from 10/1/2019 through 9/30/2020
  • FY 2019 - No Change, effective from 10/1/2018 through 9/30/2019
  • FY 2018 - No Change, effective from 10/1/2017 through 9/30/2018
  • FY 2017 - No Change, effective from 10/1/2016 through 9/30/2017
  • FY 2016 - New Code, effective from 10/1/2015 through 9/30/2016 (First year ICD-10-CM implemented into the HIPAA code set)