C71: Malignant neoplasm of brain

C71 refers to Malignant neoplasm of brain, a group of central nervous system and ocular malignancies. These tumors may be aggressive and present with neurological or vision-related symptoms. ICD10 coding for these conditions ensures accurate diagnosis documentation, facilitates multidisciplinary care, and supports outcomes tracking.

Symptoms

• Headaches – Persistent and often worse in the morning (brain or meningeal tumors)
• Vision changes – Blurred or loss of vision with ocular or optic pathway tumors
• Seizures – Common in brain malignancies
• Numbness or weakness – Seen with spinal or cranial nerve involvement
• Balance or coordination issues – Particularly with cerebellar or brainstem tumors
• Cognitive or personality changes – Indicative of frontal lobe tumors
• Eye pain or swelling – Seen in eye and adnexal cancers

Diagnosis

Diagnosis of Malignant neoplasm of brain includes neuroimaging (MRI, CT), ophthalmic exam (for C69), lumbar puncture (for meningeal involvement), and biopsy. Functional imaging and neurophysiological tests may be used to assess tumor impact. Multidisciplinary evaluation helps determine surgical, radiological, or chemotherapeutic strategies.

ICD10 Code Usage

ICD10 code C71 is used in neurology, oncology, neurosurgery, and ophthalmology to classify cancers of the brain, meninges, spinal cord, and eye. It supports accurate treatment coding, insurance claims, and cancer registry tracking.

Related Codes

• C69 – Malignant neoplasm of eye and adnexa
• C70 – Malignant neoplasm of meninges
• C72 – Malignant neoplasm of spinal cord, cranial nerves and other parts of central nervous system

FAQs

Q1: What is ICD10 code C71?
A: It refers to Malignant neoplasm of brain, used to classify malignant tumors affecting the brain, eye, and nervous system.

Q2: Are these tumors common?
A: Brain tumors are relatively rare but serious. Eye and meningeal tumors are less common and often aggressive.

Q3: What is the treatment approach?
A: Surgery, radiation therapy, chemotherapy, or targeted therapy depending on tumor type and location.

Q4: Can these tumors spread?
A: Yes, some can spread to or from other areas of the CNS or metastasize systemically.

Q5: How important is early diagnosis?
A: Critical—early intervention improves outcomes, especially with highly invasive or function-impairing tumors.

Conclusion

ICD10 code C71 is vital for documenting and managing Malignant neoplasm of brain. It enables timely referrals, treatment planning, insurance coverage, and epidemiological tracking. Accurate coding also contributes to research efforts and clinical decision-making in neuro-oncology.