Neurology & Pain Management Coding Alert
Graves’ Disease With Neuropathy
Question: Encounter notes indicate that the provider treated a patient with autonomic neuropathy secondary to Graves’ disease without thyrotoxic crisis or storm. Is there a single ICD-10 code for this condition? Arizona Subscriber Answer: No, you’ll need a pair of ICD-10 codes for this patient: one to code the Graves’ disease, and another for the neuropathy. On the claim, report E05.00 (Thyrotoxicosis with diffuse goiter without thyrotoxic crisis or storm) as the primary diagnosis and G99.0 (Autonomic neuropathy in diseases classified elsewhere) as the secondary diagnosis. Order explained: ICD-10 is very clear that this should be the order of the codes on your claim. Below the descriptor for G99.0, the code book states: “Code first underlying disease, such as: 
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