I am service connected 20% for Degenerative Disc Disease [ L4-L5 THRU L5-S1] ,10% Sciatic Nerve. I had recent herniated disc surgery and going over my MRI/X-RAYS i noticed severe Facet Arthropathy/Degenerative Arthritis L2-L3 THRU L5-S1. How is the arthritis rated with the spine? Is it added to the spine or is it a seperate rating under diagnostic code 5003? Thank you all for your service.Semper Fi !