This final rule with comment period addresses certain provisions of the Tax Relief and Health Care Act of 2006, as well as making other proposed changes to Medicare Part B payment policy. We are making these changes to ensure that our payment systems are updated to reflect changes in medical practice and the relative value of services. This final rule with comment period also discusses refinements to resource-based practice expense (PE) relative value units (RVUs); geographic practice cost indices (GPCI) changes; malpractice RVUs; requests for additions to the list of telehealth services; several coding issues including additional codes from the 5-Year Review; payment for covered outpatient drugs and biologicals; the competitive acquisition program (CAP); clinical lab fee schedule issues; payment for renal dialysis services; performance standards for independent diagnostic testing facilities; expiration of the physician scarcity area (PSA) bonus payment; conforming and clarifying changes for comprehensive outpatient rehabilitation facilities (CORFs); a process for updating the drug compendia; physician self referral issues; beneficiary signature for ambulance transport services; durable medical equipment (DME) update; the chiropractic services demonstration; a Medicare economic index (MEI) data change; technical corrections; standards and requirements related to therapy services under Medicare Parts A and B; revisions to the ambulance fee schedule; the ambulance inflation factor for CY 2008; and amending the e-prescribing exemption for computer-generated facsimile transmissions. We are also finalizing the calendar year (CY) 2007 interim RVUs and are issuing interim RVUs for new and revised procedure codes for CY 2008. As required by the statute, we are announcing that the physician fee schedule update for CY 2008 is -10.1 percent, the initial estimate for the sustainable growth rate for CY 2008 is -0.1 percent, and the conversion factor (CF) for CY 2008 is $34.0682.