Exhibit 99.1

JOINT FILING AGREEMENT

In accordance with Rule 13d-1(k) promulgated under the Securities Exchange Act of 1934, the undersigned hereby agree to the joint filing of a Statement on Schedule 13D (including any and all amendments thereto) with respect to the common stock, par value $0.001, of Cotiviti Holdings, Inc. and further agree that this Joint Filing Agreement be included as an exhibit thereto.

Dated as of June 29, 2018

	VERSCEND TECHNOLOGIES, INC.

	By:	/s/ Emad Rizk
		Name: Emad Rizk
		Title: Chief Executive Officer and President

	VERSCEND HOLDING CORP.

	By:	/s/ Emad Rizk
		Name: Emad Rizk
		Title: Chief Executive Officer and President

	VERSCEND HOLDING II CORP.

	By:	/s/ Emad Rizk
		Name: Emad Rizk
		Title: Chief Executive Officer and President

	VERSCEND INTERMEDIATE HOLDING CORP.

	By:	/s/ Emad Rizk
		Name: Emad Rizk
		Title: Chief Executive Officer and President

	VERSCEND HOLDINGS LLC
	By	Veritas Capital Fund Management, L.L.C., acting as the Non-Member Manager

	By:	/s/ Ramzi M. Musallam
		Name: Ramzi M. Musallam
		Title: Chief Executive Officer and Managing Partner of Veritas Capital Fund Management, L.L.C., the non-member manager of Verscend Holdings LLC

	THE VERITAS CAPITAL FUND V, L.P.
	By: Veritas Capital Partners V, L.L.C., its General Partner

	By:	/s/ Ramzi M. Musallam
		Name: Ramzi M. Musallam
		Title: Managing Partner of Veritas Capital Partners V, L.L.C., the general partner of The Veritas Capital Fund V, L.P.

	VERITAS CAPITAL PARTNERS V, L.L.C.

	By:	/s/ Ramzi M. Musallam
		Name: Ramzi M. Musallam
		Title: Managing Partner

	RAMZI M. MUSALLAM

	/s/ Ramzi M. Musallam

Cotiviti Holdings, Inc. SC 13D