Your ticket is stored in a HIPAA-compliant data center and Business Associate Agreements are in place for all parties involved. Data is transmitted over an encrypted (HTTPS) connection. Any data directly entered into a ticket is stored securely. However EMAIL is not secure and should not be used for transmission of PHI unless you include the PHI in a password encrypted attachment and provide your Clinigence support contact with the decryption key via a secure method.
The following sites may provide information you find helpful regarding HIPAA and PHI:
http://www.hhs.gov/ocr/privacy/hipaa/understanding/summary/index.html
http://en.wikipedia.org/wiki/Protected_health_information
http://www.hipaa.com/2009/09/hipaa-protected-health-information-what-does-phi-include/