ICD-10 Code A01.01 – Typhoid meningitis (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code A01.01 – Typhoid meningitis
What it is
Typhoid meningitis is meningitis caused by Salmonella Typhi infection. It indicates central nervous system involvement as a complication of typhoid fever.
Clinical signs
Clinical features vary; refer to documentation. Typical meningitis findings may include headache, fever, neck stiffness, altered mental status, or other neurologic signs in a patient with typhoid infection.
When to use this code
Use A01.01 when the provider documents typhoid meningitis or meningitis due to Salmonella Typhi. Code it when the record clearly links the meningitis to typhoid fever or typhoid infection.
If the chart only states typhoid fever without meningeal involvement, this code is not appropriate. Review the documentation for explicit neurologic involvement and causal wording before assigning the code.
Do not use for
Do not use this code for nonspecific meningitis, viral meningitis, or meningitis from other organisms. Check documentation if the causative infection is not clearly typhoid.
Coding tip
Confirm both the meningitis diagnosis and the typhoid cause in the provider note before coding.