100.2 - Washington University in St. Louis

55) MISSOURI MEDICARE FEE LOCATION REGION. Enter a 99 in this field if the location is in Medicare region 2 or 3. (The St. Louis area is region 1.) If the location has a 99 in this field, the Provider’s Medicare Part B Region 99 CPIN and Group number will print on the Medicare claim form. 56) CORRESPONDING COMMERCIAL LABORATORY. ................
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