Summary & Overview
Tuberculosis of nervous system: ICD-10-CM Diagnosis Code Group Overview
International Classification of Diseases, 10th Revision, Clinical Modification (ICD-10-CM) codes under the group ICD-10-CM A17 cover tuberculous infections of the nervous system, including tuberculous meningitis and intracranial or intraspinal tuberculomas. Accurate ICD-10-CM coding for this group is significant for correct reimbursement because specificity affects diagnosis-related grouping, resource allocation, and billing outcomes.
Tuberculosis of nervous system Overview
This group includes infections of the central nervous system caused by Mycobacterium tuberculosis, such as tuberculous meningitis and intracranial tuberculomas, affecting the brain and spinal cord. These diagnoses target the nervous system and represent serious, often complex infections requiring precise clinical documentation. Accurate coding ensures correct classification of severity, influences hospital case mix and billing pathways, and supports appropriate reimbursement and public health reporting.
Typical Clinical Scenarios
- A middle-aged patient presents to the emergency department with acute severe headache, fever, neck stiffness, photophobia, and rapidly progressive confusion after several weeks of weight loss and night sweats; cerebrospinal fluid analysis shows lymphocytic pleocytosis, elevated protein, low glucose, and acid-fast bacilli are detected, consistent with tuberculous meningitis. This acute central nervous system infection requiring urgent inpatient evaluation and anti-tuberculous therapy is coded from this group because the nervous system is the site of active tuberculous disease. Typical codes:
A17.0,A17.1 - A young adult with a known history of pulmonary tuberculosis presents for follow-up with persistent focal neurologic deficits months after treatment, including hemiparesis and seizures; neuroimaging reveals a tuberculoma in the cerebral hemisphere without current meningeal inflammation. This chronic intracranial granulomatous lesion related to Mycobacterium tuberculosis is assigned a code from this group to capture tuberculous involvement of the brain parenchyma. Typical codes:
A17.8,A17.9 - An inpatient with newly diagnosed miliary tuberculosis develops progressive sensorineural hearing loss and signs of cranial nerve palsies; imaging and clinical correlation indicate tuberculous involvement of the cranial nerves and base of skull with tuberculous arachnoiditis as a complication of disseminated disease. Because the nervous system is affected as a complication/comorbidity of systemic tuberculosis, a nervous system tuberculous code from this group is used to reflect that complication. Typical codes:
A17.8,A17.9