Question: What are the ICD-10 code options for Morton's neuroma? North Carolina Subscriber Answer: Your ICD-10 code choices for Morton's neuroma include the following: Podiatrists can use physical exam, X-rays, and diagnostic ultrasound to diagnose a Morton's neuroma. Morton's neuroma definition: Morton's neuroma, the most common type of neuroma, is a sustained irritation or inflammation that causes perineural fibrosis and thickening of the communicating branch between the medial and lateral plantar nerves in the third interspace between the third and fourth metatarsals.