Billing of 83721 and 80061

Does anyone out there bill both the 80061 and 83721? We know that 83721 is a column 2 code of 80061 but wanted to get a general idea of how many actually bill both on the same claim.
Thank you,

re: Billing of 83721 and 80061

CPT® code 83721 (lipoprotein, direct measurement; direct measurement, LDL cholesterol) describes direct measurement of LDL cholesterol. It should not be used to report a calculated LDL cholesterol. Direct measurement of LDL cholesterol in addition to total cholesterol (CPT® code 82465)or lipid panel (CPT® code 80061) may be reasonable and necessary if the triglyceride level is too high (greater than or equal to 400 mg/dl) to permit calculation of the LDL cholesterol. In such situations, CPT® code 83721 should be reported with modifier 59.