IKBKAP Genetic Testing Coding and Billing Guidelines (M00086)
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October 28, 2015 - Updated 08.14.17

IKBKAP Genetic Testing Coding and Billing Guidelines (M00086)

Effective for dates of service on and after February 7, 2013.

Mutations to the IKBKAP (inhibitor of kappa light polypeptide gene enhancer in B-cells, kinase complex-associated proteins) are associated with familial dysautonomia (FD), a condition that affects the development of sensory, sympathetic, and parasympathetic neurons. Genetic testing may be performed at birth to diagnose FD. For adults, IKBKAP genetic testing identifies parents that may be at risk for conceiving a child with the disease. Therefore, MolDX has determined that testing for the IKBKAP is not a Medicare benefit and is a statutorily excluded service. In addition to single disease testing, MolDX will also deny panels of tests that include an IKBKAP gene test as a statutorily excluded service.

To receive an IKBKAP test denial, please submit the following claim information:

  • CPT code 81260-IKBKAP, common variants
  • An Advance Beneficiary Notice of Non-Coverage (ABN)External Website is not required for statutorily excluded services.
    • For a voluntary issued ABN, append with HCPCS modifier GX
    • To indicate a valid ABN is on file for a known statutorily excluded service, append with HCPCS modifier GY
  • Select the appropriate diagnosis for the patient
  • Enter the DEX Z-code identifier adjacent to the CPT code in the comment/narrative field for the following claim field/types:
    • Part A: Loop 2300 NTE 01/SV202-7 (electronic claim); Form Locator 80 (paper claim)
    • Part B: Loop 2400 or SV101-7 (electronic claim); Item 19 (paper claim)

Reference: Sec. 1862 (1)(A) Statutory Exclusion covers diagnostic testing "except for items and services that are not reasonable and necessary for the diagnosis or treatment of illness or injury or to improve the functioning of a malformed body member,…"


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