Disorders of meninges, not elsewhere classified

This code represents various non-specific conditions affecting the meninges, the protective membranes surrounding the brain and spinal cord, that are not classified under more specific diagnoses. These disorders can include conditions like meningeal adhesions, cysts, or other structural abnormalities of the meninges. It is used when a more precise diagnosis, such as meningitis or hemorrhage, cannot be made.

Use this code for documented meningeal disorders where the specific etiology or nature is not otherwise classifiable. This might include findings like arachnoid cysts without specific cause, or chronic meningeal irritation not attributable to infection or trauma. Documentation should clearly indicate a meningeal disorder that doesn't fit a more specific ICD-9-CM code.

• Always seek a more specific code if the documentation allows for a definitive diagnosis of a meningeal condition (e.g., infectious meningitis, meningeal hemorrhage).
• Ensure the documentation explicitly states a "disorder of meninges, not elsewhere classified" or similar non-specific terminology.
• Avoid using this code if the meningeal involvement is secondary to a primary condition that has a more specific code (e.g., meningeal carcinomatosis coded to the malignancy).