ICD-10 Code A17.8 – Other Tuberculosis of Nervous System (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code A17.8 – Other tuberculosis of nervous system
What it is
This code identifies tuberculosis infection involving the nervous system that does not fit a more specific ICD-10 category. Use it for documented TB affecting neural tissues when the record supports a nonspecific or other nervous system site.
Clinical signs
Clinical features vary; refer to documentation. Findings may include neurologic deficits, headache, meningitic signs, seizures, or focal symptoms when tuberculosis involves the brain, spinal cord, or related structures.
When to use this code
Use A17.8 when the provider documents tuberculosis of the nervous system and does not name a more specific subtype such as meningitis or other indexed form. It may also apply when the site is described as “other” or unspecified within the nervous system.
Confirm the diagnosis is active tuberculosis, not a history of TB or a screening result. If the note gives a more precise nervous system manifestation, code that specific condition instead.
Do not use for
Do not use this code for pulmonary TB, latent TB infection, or tuberculosis limited to non-neurologic sites. If the documentation identifies a specific nervous system TB diagnosis, check for a more exact code.
Coding tip
Review the provider’s wording carefully; when the site is vague, code only what is explicitly documented and avoid assuming a specific nervous system structure.