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Pachymeningitis

International Classification of Diseases for Mortality and Morbidity Statistics, 11th Revision, v2024-01

Inflammation of the pachymeninges resulting in localised or diffuse thickening of the dura mater which can be caused by chronic infection, inflammatory and immune-mediated disorders and malignancies. The cranial and/or the spinal dura may be affected. Neurological features include headache, visual disturbance, cranial nerve palsies, ataxia and with spinal involvement, limb weakness, sensory impairment and sphincter disturbances . Diagnosis may be aided by neuroimaging and spinal fluid analysis.

sections/codes in this section (8E41-8E41)

• Pachymeningitis due to infection  (8E41.0)
• Idiopathic hypertrophic pachymeningitis  (8E41.1)
• Other specified pachymeningitis  (8E41.Y)
• Pachymeningitis, unspecified  (8E41.Z)

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