ICD10 Diagnosis Code C79.31
Secondary malignant neoplasm of brain
Diagnosis Code C79.31
Short Description: Secondary malignant neoplasm of brain
Long Description: Secondary malignant neoplasm of brain
This is the 2018 version of the ICD10CM diagnosis code C79.31
Valid for Submission
The code C79.31 is valid for submission for HIPAAcovered transactions.
Code Classification

Neoplasms (C00–D48)

Malignant neoplasms of illdefined, other secondary and unspecified sites (C76C80)
 Secondary malignant neoplasm of other and unspecified sites (C79)

Malignant neoplasms of illdefined, other secondary and unspecified sites (C76C80)
Information for Medical Professionals
The ICD10 and ICD9 GEMs are used to facilitate linking between the diagnosis codes in ICD9CM and the new ICD10CM code set. The GEMs are the raw material from which providers, health information vendors and payers can derive specific applied mappings to meet their needs.
 198.3  Sec mal neo brain/spine (approximate) Approximate Flag
The approximate flag is on, indicating that the relationship between the code in the source system and the code in the target system is an approximate equivalent.
Synonyms
 Malignant neoplasm of basal ganglia
 Malignant neoplasm of brainstem
 Malignant neoplasm of cerebellum
 Malignant neoplasm of cerebral ventricles
 Malignant neoplasm of frontal lobe
 Malignant neoplasm of occipital lobe
 Malignant neoplasm of parietal lobe
 Malignant neoplasm of rectosigmoid junction metastatic to brain
 Malignant neoplasm of temporal lobe
 Malignant tumor of rectosigmoid junction
 Metastasis to brain of unknown primary
 Metastatic neoplasm of left basal ganglion
 Neoplasm of cerebral ventricle
 Neoplasm of frontal lobe
 Neoplasm of occipital lobe
 Neoplasm of parietal lobe
 Neoplasm of temporal lobe
 Secondary malignant neoplasm of brain
 Secondary malignant neoplasm of brain and spinal cord
 Secondary malignant neoplasm of brain stem
 Secondary malignant neoplasm of cerebellum
 Secondary malignant neoplasm of cerebral ventricle
 Secondary malignant neoplasm of cerebrum
 Secondary malignant neoplasm of frontal lobe
 Secondary malignant neoplasm of occipital lobe
 Secondary malignant neoplasm of parietal lobe
 Secondary malignant neoplasm of spinal cord
 Secondary malignant neoplasm of temporal lobe
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.
The Tabular must be reviewed for the complete diagnosis code.
Neoplasm, neoplastic  Malignant Primary 
Malignant Secondary 
CaInSitu  Benign  Uncertain Behavior 
Unspecified Behavior 

»basal ganglia  C71.0  C79.31  D33.0  D43.0  D49.6  
»basis pedunculi  C71.7  C79.31  D33.1  D43.1  D49.6  
»brain NEC  C71.9  C79.31  D33.2  D43.2  D49.6  
»brain NEC »basal ganglia  C71.0  C79.31  D33.0  D43.0  D49.6  
»brain NEC »cerebellopontine angle  C71.6  C79.31  D33.1  D43.1  D49.6  
»brain NEC »cerebellum NOS  C71.6  C79.31  D33.1  D43.1  D49.6  
»brain NEC »cerebrum  C71.0  C79.31  D33.0  D43.0  D49.6  
»brain NEC »choroid plexus  C71.7  C79.31  D33.1  D43.1  D49.6  
»brain NEC »corpus callosum  C71.8  C79.31  D33.2  D43.2  D49.6  
»brain NEC »corpus striatum  C71.0  C79.31  D33.0  D43.0  D49.6  
»brain NEC »cortex (cerebral)  C71.0  C79.31  D33.0  D43.0  D49.6  
»brain NEC »frontal lobe  C71.1  C79.31  D33.0  D43.0  D49.6  
»brain NEC »globus pallidus  C71.0  C79.31  D33.0  D43.0  D49.6  
»brain NEC »hippocampus  C71.2  C79.31  D33.0  D43.0  D49.6  
»brain NEC »hypothalamus  C71.0  C79.31  D33.0  D43.0  D49.6  
»brain NEC »internal capsule  C71.0  C79.31  D33.0  D43.0  D49.6  
»brain NEC »medulla oblongata  C71.7  C79.31  D33.1  D43.1  D49.6  
»brain NEC »midbrain  C71.7  C79.31  D33.1  D43.1  D49.6  
»brain NEC »occipital lobe  C71.4  C79.31  D33.0  D43.0  D49.6  
»brain NEC »overlapping lesion  C71.8  C79.31  
»brain NEC »parietal lobe  C71.3  C79.31  D33.0  D43.0  D49.6  
»brain NEC »peduncle  C71.7  C79.31  D33.1  D43.1  D49.6  
»brain NEC »pons  C71.7  C79.31  D33.1  D43.1  D49.6  
»brain NEC »stem  C71.7  C79.31  D33.1  D43.1  D49.6  
»brain NEC »tapetum  C71.8  C79.31  D33.2  D43.2  D49.6  
»brain NEC »temporal lobe  C71.2  C79.31  D33.0  D43.0  D49.6  
»brain NEC »thalamus  C71.0  C79.31  D33.0  D43.0  D49.6  
»brain NEC »uncus  C71.2  C79.31  D33.0  D43.0  D49.6  
»brain NEC »ventricle (floor)  C71.5  C79.31  D33.0  D43.0  D49.6  
»brain NEC »ventricle (floor) »fourth  C71.7  C79.31  D33.1  D43.1  D49.6  
»cerebellopontine (angle)  C71.6  C79.31  D33.1  D43.1  D49.6  
»cerebellum, cerebellar  C71.6  C79.31  D33.1  D43.1  D49.6  
»cerebrum, cerebral (cortex) (hemisphere) (white matter)  C71.0  C79.31  D33.0  D43.0  D49.6  
»cerebrum, cerebral (cortex) (hemisphere) (white matter) »peduncle  C71.7  C79.31  D33.1  D43.1  D49.6  
»cerebrum, cerebral (cortex) (hemisphere) (white matter) »ventricle  C71.5  C79.31  D33.0  D43.0  D49.6  
»cerebrum, cerebral (cortex) (hemisphere) (white matter) »ventricle »fourth  C71.7  C79.31  D33.1  D43.1  D49.6  
»choroid »plexus  C71.5  C79.31  D33.0  D43.0  D49.6  
»corpus »callosum, brain  C71.0  C79.31  D33.2  D43.2  D49.6  
»corpus »striatum, cerebrum  C71.0  C79.31  D33.0  D43.0  D49.6  
»cortex »cerebral  C71.0  C79.31  D33.0  D43.0  D49.6  
»cranial (fossa, any)  C71.9  C79.31  D33.2  D43.2  D49.6  
»ependyma (brain)  C71.5  C79.31  D33.0  D43.0  D49.6  
»ependyma (brain) »fourth ventricle  C71.7  C79.31  D33.1  D43.1  D49.6  
»fossa (of)  C71.9  C79.31  D33.2  D43.2  D49.6  
»fossa (of) »anterior (cranial)  C71.9  C79.31  D33.2  D43.2  D49.6  
»fossa (of) »cranial  C71.9  C79.31  D33.2  D43.2  D49.6  
»fossa (of) »middle (cranial)  C71.9  C79.31  D33.2  D43.2  D49.6  
»fossa (of) »posterior (cranial)  C71.9  C79.31  D33.2  D43.2  D49.6  
»frontal »lobe, brain  C71.1  C79.31  D33.0  D43.0  D49.6  
»frontal »pole  C71.1  C79.31  D33.0  D43.0  D49.6  
»ganglia [See Also: Neoplasm, nerve, peripheral] »basal  C71.0  C79.31  D33.0  D43.0  D49.6  
»globus pallidus  C71.0  C79.31  D33.0  D43.0  D49.6  
»hemisphere, cerebral  C71.0  C79.31  D33.0  D43.0  D49.6  
»hippocampus, brain  C71.2  C79.31  D33.0  D43.0  D49.6  
»hypothalamus  C71.0  C79.31  D33.0  D43.0  D49.6  
»insula  C71.0  C79.31  D33.0  D43.0  D49.6  
»insular tissue (pancreas) »brain  C71.0  C79.31  D33.0  D43.0  D49.6  
»internal  C71.0  C79.31  D33.0  D43.0  D49.6  
»internal »capsule  C71.0  C79.31  D33.0  D43.0  D49.6  
»intracranial NEC  C71.9  C79.31  D33.2  D43.2  D49.6  
»island of Reil  C71.0  C79.31  D33.0  D43.0  D49.6  
»medulla »oblongata  C71.7  C79.31  D33.1  D43.1  D49.6  
»midbrain  C71.7  C79.31  D33.1  D43.1  D49.6  
»motor tract »brain  C71.9  C79.31  D33.2  D43.2  D49.6  
»occipital »lobe or pole, brain  C71.4  C79.31  D33.0  D43.0  D49.6  
»olive (brain)  C71.7  C79.31  D33.1  D43.1  D49.6  
»operculum (brain)  C71.0  C79.31  D33.0  D43.0  D49.6  
»pallium  C71.0  C79.31  D33.0  D43.0  D49.6  
»parietal »lobe, brain  C71.3  C79.31  D33.0  D43.0  D49.6  
»peduncle, cerebral  C71.7  C79.31  D33.1  D43.1  D49.6  
»plexus »choroid  C71.5  C79.31  D33.0  D43.0  D49.6  
»pole  C71.1  C79.31  D33.0  D43.0  D49.6  
»pole »frontal  C71.1  C79.31  D33.0  D43.0  D49.6  
»pole »occipital  C71.4  C79.31  D33.0  D43.0  D49.6  
»pons (varolii)  C71.7  C79.31  D33.1  D43.1  D49.6  
»posterior fossa (cranial)  C71.9  C79.31  D33.2  D43.2  D49.6  
»putamen  C71.0  C79.31  D33.0  D43.0  D49.6  
»pyramid (brain)  C71.7  C79.31  D33.1  D43.1  D49.6  
»rhinencephalon  C71.0  C79.31  D33.0  D43.0  D49.6  
»spine, spinal (column) »bulb  C71.7  C79.31  D33.1  D43.1  D49.6  
»stem, brain  C71.7  C79.31  D33.1  D43.1  D49.6  
»suprasellar (region)  C71.9  C79.31  D33.2  D43.2  D49.6  
»supratentorial (brain) NEC  C71.0  C79.31  D33.0  D43.0  D49.6  
»tapetum, brain  C71.8  C79.31  D33.2  D43.2  D49.6  
»temporal »lobe or pole  C71.2  C79.31  D33.0  D43.0  D49.6  
»thalamus  C71.0  C79.31  D33.0  D43.0  D49.6  
»uncus, brain  C71.2  C79.31  D33.0  D43.0  D49.6  
»ventricle (cerebral) (floor) (lateral) (third)  C71.5  C79.31  D33.0  D43.0  D49.6  
»ventricle (cerebral) (floor) (lateral) (third) »fourth  C71.7  C79.31  D33.1  D43.1  D49.6  
»vermis, cerebellum  C71.6  C79.31  D33.1  D43.1  D49.6  
»white matter (central) (cerebral)  C71.0  C79.31  D33.0  D43.0  D49.6 
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
 Headaches, often in the morning
 Nausea and vomiting
 Changes in your ability to talk, hear, or see
 Problems with balance or walking
 Problems with thinking or memory
 Feeling weak or sleepy
 Changes in your mood or behavior
 Seizures
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 substances that attack cancer cells without harming normal cells. Many people get a combination of treatments.
NIH: National Cancer Institute
 Brain surgery (Medical Encyclopedia)
 Brain surgery  discharge (Medical Encyclopedia)
 Brain tumor  primary  adults (Medical Encyclopedia)
 Metastatic brain tumor (Medical Encyclopedia)
 Understanding Chemotherapy  NIH  EasytoRead (National Cancer Institute)
 What to Know about External Beam Radiation Therapy  NIH  EasytoRead (National Cancer Institute)
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