Question: Encounter notes indicate that a patient is suffering a high cervical disc disorder with myelopathy. How many diagnosis codes do I need for this patient, and what is “high cervical,” from an anatomic standpoint? North Carolina Subscriber Answer: You’ll only need a single diagnosis code for this patient: M50.01 (Cervical disc disorder with myelopathy, high cervical region). Anatomic breakdown: Per ICD-10, the high cervical area is C1-C4.