UNITED STATES
SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

FORM 8-K

CURRENT REPORT

Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934

Date of Report (Date of Earliest Event Reported): August 25, 2011

CardioNet, Inc.

(Exact name of registrant as specified in its charter)

Registrant’s telephone number, including area code: (610) 729-7000

Not Applicable
Former name or former address, if changed since last report

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

o            Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

o            Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

o            Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

o            Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Item 8.01.  Other Events.

On August 25, 2011, CardioNet, Inc. (the “Company”),  received a Civil Investigative Demand (“CID”) issued by the U.S. Department of Justice, Western District of Washington.  The CID states that it was issued in the course of an investigation under the federal false claims act and seeks documents for the period January 1, 2007 through the date of the CID.  The CID indicates that the investigation concerns allegations that the Company may have used inappropriate diagnosis codes when submitting claims for payment to Medicare for its real-time, outpatient cardiac monitoring services.  The Company had no knowledge of the investigation prior to receipt of the CID.

The Company intends to fully cooperate with the government’s request and will begin the process of providing information in response to the CID.  The Company is unable to predict what action, if any, might be taken in the future by the Department of Justice or other governmental authorities as a result of this investigation or what impact, if any, the outcome of this matter might have on the Company’s business, financial position or results of operations.

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SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

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