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        <FormAndLineReferenceDesc>Part X, Line 2:</FormAndLineReferenceDesc>
        <ExplanationTxt>American Association of Neurological Surgeons is an Illinois nonprofit corporation which has been granted tax-exempt status as a public charity under Section 501(c)(6) of the Internal Revenue Code. The entity is required to pay federal and state income taxes only on their net unrelated business income. The entity follows the provisions of the Accounting for Uncertainty in Income Taxes section of the Income Taxes Topic of the FASB Accounting Standards Codification, which addresses the determination of whether tax benefits claimed or expected to be claimed on a tax return should be recorded in the financial statements. Under this guidance, the entity may recognize the tax benefit from an uncertain tax position only if it is more likely than not that the tax position will be sustained on examination by taxing authorities, based on the technical merits of the position. Examples of tax positions include the tax-exempt status of the entities and various positions related to the potential sources of unrelated business taxable income (UBIT). The tax benefits recognized in the financial statements from such a position are measured based on the largest benefit that has a greater than 50 percent likelihood of being realized upon ultimate settlement. As of June 30, 2016 and 2015, the entity has no liability for unrecognized tax benefits. The entity files Forms 990 and Form 990-T in the U.S. federal jurisdiction and the State of Illinois. With few exceptions, the entity is no longer subject to examination by the Internal Revenue Service for years before 2013.</ExplanationTxt>
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      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>Kathleen T Craig</PersonNm>
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        <TitleTxt>Chief Financial Officer</TitleTxt>
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      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Part I, Line 3</FormAndLineReferenceDesc>
        <ExplanationTxt>The compensation of the Executive Director was determined by the related organization, American Association of Neurosurgeons, Inc. The following methods were used: -Compensation survey or study -Approval by the board or compensation committee</ExplanationTxt>
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        <FormAndLineReferenceDesc>Form 990, Part VI, Section A, line 6</FormAndLineReferenceDesc>
        <ExplanationTxt>Any individual who was a Member of the American Association of Neurosurgeons at whatever classification prior to the establishment of the AANS shall automatically become a member of the same classification in the AANS. The members elected to the AANS shall be divided into eleven classes: 1) Fellow 2) Provisional 3) International 4) Associate 5) Allied 6) Lifetime 7) Candidate 8) International Candidate 9) Honorary 10) Affiliate 11) Medical Students Only Fellows, Provisional, and Lifetime Members may vote. Only Fellows may hold office.</ExplanationTxt>
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      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Section A, line 7a</FormAndLineReferenceDesc>
        <ExplanationTxt>The Officers and Directors shall be nominated and elected by the Members.</ExplanationTxt>
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      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Section A, line 7b</FormAndLineReferenceDesc>
        <ExplanationTxt>The control of the AANS shall be vested in the Board of Directors, composed of Fellows, who shall govern and manage the affairs of the AANS in accord with the purposes and principles and other requirements of the Bylaws of the AANS and in conformity with the laws governing its incorporation.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Section B, line 11</FormAndLineReferenceDesc>
        <ExplanationTxt>The Form 990 is reviewed within the Association's Accounting Department by the Accounting Manager and Chief Financial Officer. Input for Form 990 inclusion is submitted to the Association's auditing firm by the Accounting Department. After Form 990 is completed by the Association's auditing firm, the Form 990 is again reviewed by both the Accounting Manager and Chief Financial Officer prior to filing with the IRS.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Section B, line 12c</FormAndLineReferenceDesc>
        <ExplanationTxt>As a CME provider accredited by the ACCME, the AANS requires all individuals (and their significant others) in a position to influence and/or control the content of AANS directly and jointly sponsored CME activities to disclose to the AANS and subsequently to learners that the individual either has no relevant financial relationship or has any relevant financial relationships with a commercial interest. All disclosure information must be provided to AANS CME activity participants prior to the beginning of the CME activity. If a disclosure is not completed, the individual will not participate in the activity. All potential conflicts of interest identified through review of the disclosure form must be resolved in order for individuals in a position to influence and/or control CME content to be confirmed for the educational assignment. The resolution process and documents must be documented in the CME activity file. A conflict of interest disclosure must also be completed yearly by AANS Committee Members. Anyone who does not complete the disclosure will not participate on the Committee.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Section B, line 15</FormAndLineReferenceDesc>
        <ExplanationTxt>The compensation was determined by the related organization, American Association of Neurosurgeons, Inc. The following methods were used: A committee consisting of the current Past President, President and President-Elect shall be responsible for negotiating employment agreements with the Association's Executive Director, and for conducting evaluations and deciding upon raises and bonuses for the Executive Director. They shall keep the Executive Committee generally advised on these matters. Salaries of others including key employees are determined by industry standards. The Association's salary data is gathered from the Association Forum as well as other independent sources.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Section C, line 19</FormAndLineReferenceDesc>
        <ExplanationTxt>The organization makes its governing documents, conflict of interest policy and financial statements available to the public upon request for the same period of disclosure as set forth in IRC Section 6104(d).</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part XI, line 9:</FormAndLineReferenceDesc>
        <ExplanationTxt>Transfer to American Association of Neurosurgeons, Inc. -1,130,063. Transfer from American Association of Neurosurgeons, Inc. 130,000.</ExplanationTxt>
      </SupplementalInformationDetail>
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