Pt is having a follow up colonoscopy procedure for family history of Polyps. I billed G0105 with Z83.71 and the insurance applied to the patients deductible. When the patient called her insurance they told her to have us add the Z12.11 as the primary dx. However patient had a colonoscopy for fhx of polyps 3 years ago, Ins is being billed to BCBS TN and home plan is BCBS AL. Is it appropriate to append z12.11 as the primary diagnosis if it has not been 10 years since her last Colonoscopy?