INTBG – “Interferon-Beta IgG, MAID” replaced by IFNBA – “NAbFeron (INFB-1) Neutralizing Antibody Test”

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Inactivated/Replace Test

Effective Date

11/28/2022

Included in Report

WML Test Directory Update | November 2022

Replacement Test

NAbFeron® (INFB-1) Neutralizing Antibody Test

Inactivated Test Details

Mnemonic

INTBG

Ordering Code

3512660

CPT-4 Codes(s)

83516 If Interferon - beta is positive, Nab Feron® Neutralizing Antibody Test will be added at an additional charge (86382)

Replacement Test Details

Mnemonic

IFNBA

Ordering Code

3400713

CPT-4 Codes(s)

86382

The CPT codes provided are for general informational purposes only and are based on an interpretation of AMA guidance. It is the sole responsibility of the billing party to determine CPT codes. Any questions regarding coding should be directed to the paying party.

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