Question: The surgeon treats a patient with mild neurocognitive disorder due to Parkinson鈥檚 disease. Is there a single ICD-10 code for this condition? 星空入口Forum Subscriber Answer: No, you鈥檒l need a pair of diagnosis codes to complete the picture of this patient鈥檚 condition. On the claim, report G20 (Parkinson鈥檚 disease) along with F06.7 (Mild neurocognitive disorder due to known physiological condition) to represent the neurocognitive disorder. More about F06.7: ICD-10 reminds coders to 鈥淐ode first the underlying physiological condition, such as: