| 99.9 | | | Amendment No. 5 to Sixth Amended and Restated Credit and Security Agreement, dated as of August 13, 2021 (filed as an Exhibit to the Company’s quarterly report on Form 10-Q for the quarter ended September 30, 2021 and incorporated herein by reference) (Commission File Number 001-12215) | | | | | |
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| 99.10 | | | Amendment No. 6 to Sixth Amended and Restated Credit and Security Agreement, dated as of October 21, 2021 (filed as an Exhibit to the Company's 2021 annual report on Form 10-K and incorporated herein by reference) (Commission File Number 001-12215) | | | | | |
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| 99.11 | | | Amendment No. 7 to Sixth Amended and Restated Credit and Security Agreement, dated as of October 20, 2022 (filed as an Exhibit to the Company's 2022 annual report on Form 10-K and incorporated herein by reference) (Commission File Number 001-12215) | | | | | |
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| 99.12 | | | Amendment No. 8 to Sixth Amended and Restated Credit and Security Agreement, dated as of October 19, 2023 (filed as an Exhibit to the Company’s quarterly report on Form 10-Q for the quarter ended September 30, 2023 and incorporated herein by reference) (Commission File Number 001-12215) | | | | | |
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| 99.13 | | | Amendment and Restatement Agreement, dated as of November 23, 2021, relating to the Second Amended and Restated Credit Agreement, dated as of March 22, 2018, among Quest Diagnostics Incorporated, as Borrower, the lenders party thereto, JPMorgan Chase Bank, N.A., as Administrative Agent, and other agents party thereto and which includes, as Exhibit A, the Third Restated Credit Agreement (filed as an Exhibit to the Company's 2021 annual report on Form 10-K and incorporated herein by reference) (Commission File Number 001-12215) | | | | | |
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| 99.14 | | | Amendment No. 1, dated as of March 31, 2023, relating to the Third Amended and Restated Credit Agreement, dated as of November 23, 2021, among Quest Diagnostics Incorporated, as Borrower, the lenders party thereto, JPMorgan Chase Bank, N.A., as Administrative Agent, and other agents party thereto and which includes, as Exhibit A, the Third Amended and Restated Credit Agreement (filed as an Exhibit to the Company’s quarterly report on Form 10-Q for the quarter ended March 31, 2023 and incorporated herein by reference) (Commission File Number 001-12215) | | | | | |
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| 99.15 | | | Group Joinder Agreement, among Reprosource Fertility Diagnostics, Inc., Blueprint Genetics, Inc., and Mid America Clinical Laboratories, LLC, dated as of August 13, 2021, related to the Fourth Amended and Restated Receivables Sales Agreement, dated October 28, 2015, among Quest Diagnostics Incorporated and certain of its subsidiaries (filed as an Exhibit to the Company’s 2022 annual report on Form 10-K and incorporated herein by reference)(Commission File Number 001-12215) | | | | | |
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| 101.INS | | | Inline XBRL Instance Document - the instance document does not appear in the Interactive Data File because its XBRL tags are embedded within the Inline XBRL document | | | | | |
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| 101.SCH | | | Inline XBRL Taxonomy Extension Schema Document - dgx-20231231.xsd | | | | | |
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| 101.CAL | | | Inline XBRL Taxonomy Extension Calculation Linkbase Document - dgx-20231231_cal.xml | | | | | |
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| 101.DEF | | | Inline XBRL Taxonomy Extension Definition Linkbase Document - dgx-20231231_def.xml | | | | | |
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| 101.LAB | | | Inline XBRL Taxonomy Extension Label Linkbase Document - dgx-20231231_lab.xml | | | | | |
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| 101.PRE | | | Inline XBRL Taxonomy Extension Presentation Linkbase Document - dgx-20231231_pre.xml | | | | | |
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| 104 | | | The cover page from this annual report on Form 10-K, formatted in Inline XBRL. | | | | | |
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| * | | | Filed herewith. | | | | | |
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| ** | | | Furnished herewith. | | | | | |
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