If are not a healthcare provider but you do business with one, you may be a Business Associate.
Administrative Simplification (A/S)
Title II, Subtitle F, of HIPAA, which gives HHS the authority to mandate the use of standards for the electronic exchange of health care data; to specify what medical and administrative code sets should be used within those standards; to require the use of national identification systems for health care patients, providers, payers (or plans), and employers (or sponsors); and to specify the types of measures required to protect the security and privacy of personally identifiable health care information.