Primary cerebellar degeneration

This code signifies a progressive neurological disorder characterized by the degeneration of the cerebellum, leading to impaired coordination, balance, and motor control. It represents a primary, idiopathic form of cerebellar atrophy, not secondary to other identifiable conditions.

Use this code for patients presenting with symptoms such as ataxia, dysarthria, nystagmia, and intention tremor, where diagnostic workup has ruled out other causes of cerebellar dysfunction. Documentation should clearly indicate a diagnosis of primary cerebellar degeneration, often supported by imaging studies showing cerebellar atrophy.

• Ensure documentation specifies "primary" or "idiopathic" to differentiate from secondary cerebellar degeneration.
• Do not use this code if the cerebellar degeneration is a symptom of another underlying disease (e.g., paraneoplastic syndrome, multiple sclerosis, genetic metabolic disorders).
• Consider sequencing this code as the primary diagnosis when it is the main reason for the encounter and treatment.