ICD-10 Code A52.12 – Other cerebrospinal syphilis (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code A52.12 – Other cerebrospinal syphilis
What it is
A52.12 identifies cerebrospinal syphilis involving the central nervous system when the presentation does not fit a more specific neurosyphilis category. Use it for documented syphilitic involvement of the brain, spinal cord, or meninges.
Clinical signs
Clinical features vary; refer to documentation. Common findings may include neurologic deficits, sensory changes, gait disturbance, cranial nerve involvement, or cognitive changes consistent with central nervous system infection.
When to use this code
Use A52.12 when the provider documents cerebrospinal syphilis, other neurosyphilis, or syphilitic involvement of the CNS without a more specific subtype. It may also apply when the record describes meningeal or spinal involvement from syphilis and no alternate code is stated. Check documentation for the exact neurologic manifestation.
Do not use for
Do not use this code for latent syphilis, primary or secondary syphilis, or unspecified syphilis without CNS involvement. If the record names a different neurosyphilis form, code that more specific diagnosis instead.
Coding tip
Confirm that the provider links the neurologic findings to syphilis before assigning A52.12.