Reimbursement Guidelines for Modifier 90
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- Reference (Outside) Laboratory: When laboratory procedures are performed by a party other than the treating or reporting physician, the procedure may be identified by adding the modifier 90 to the usual procedure number. For the Medicare program, this modifier is used by independent clinical laboratories when referring tests to a reference laboratory for analysis. Modifier 90 is used by a physician or clinic when the laboratory tests performed for a patient are performed by an outside or reference laboratory. This modifier is used to indicate that although the physician is reporting the performance of a laboratory test, the actual testing component was a service from a laboratory. To know more visit us: http://bit.ly/2OwgShg or email us at- info@medicalbillersandcoders.com or call us at- 888-357-3226 (Eight-Eight-Eight-Three-Five-Seven-Three-Two-Two-Six).
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