Posted Date
Effective Date
Update Type Replacement Test
Order Code FC1EQ


C1 Esterase Inhibitor, Functional, Serum

Order Code: FC1EQ

Fee Code: 20068 (CPT 86161)

Reference Laboratory: Mayo FC1EQ (81493)

New Order Code: pending

New Fee Code: pending (CPT 83520)

New Reference Lab: Mayo C1INF

Mayo Clinic Laboratories test ID C1INF will replace test ID FC1EQ effective September 20, 2022. This test is used for diagnosing hereditary angioedema and for monitoring response to C1 esterase inhibitor replacement therapy. There will be no change to specimen collection and handling requirements, test methodology, or reference range.