1. Diagnosis Code Structure

2. Procedure Code Structure XXXXXXX SectionBody system Root operation Body Part ApproachDeviceExtension ICD-10-PCS

3. Code comparison—Diagnosis ICD-9-CM  434.91 Unspecified cerebral artery occlusion with cerebral infarction

4. Code comparison—Diagnosis ICD-10-CM  The 16 translation options contain more specific information about anatomic site.  I6350 Cerebral infarction due to unspecified occlusion or stenosis of unspecified cerebral artery  I63511 Cerebral infarction due to unspecified occlusion or stenosis of right middle cerebral artery  I63512 Cerebral infarction due to unspecified occlusion or stenosis of left middle cerebral artery  I63519 Cerebral infarction due to unspecified occlusion or stenosis of unspecified middle cerebral artery  I63521 Cerebral infarction due to unspecified occlusion or stenosis of right anterior cerebral artery….

5. Code Comparison-Procedure ICD-9 Volume 3  00.61 Percutaneous angioplasty or atherectomy of precerebral (extracranial) vessel(s)  00.40 Procedure on single vessel

6. Code Comparison-Procedure ICD-10-PCS  The 62 translation options include 2 specific body systems, 11 specific body parts, 2 specific approaches and 3 specific devices.  037H34Z Dilation of Right Common Carotid Artery with Drug-eluting Intraluminal Device, Percutaneous Approach  037H3DZ Dilation of Right Common Carotid Artery with Intraluminal Device, Percutaneous Approach  037H3ZZ Dilation of Right Common Carotid Artery, Percutaneous Approach  037H44Z Dilation of Right Common Carotid Artery with Drug-eluting Intraluminal Device, Percutaneous Endoscopic Approach  037H4DZ Dilation of Right Common Carotid Artery with Intraluminal Device, Percutaneous Endoscopic Approach…….