American National Standards Institute (ANSI)- accredited group that defines electronic date inter change standards for many American industries including health care insurance. Most of the electronic transaction standards mandated or proposed under Health Insurance Portability and Accountability Act (HIPAA) are X12 standards. Also see Accredited Standards Committee X12 (ASC X12) .

X12 First Report of Injury, Illness or Incident transaction. This standard could eventually be included in the Health Insurance Portability and Accountability Act (HIPAA) mandate.

X12 Health Care Eligibility & Benefit Inquiry transaction. Version 4010 of this transaction has been included in the Health Insurance Portability and Accountability Act (HIPAA) mandates.

X12 Health Care Eligibility & Benefit Response transaction. Version 4010 of the transaction has been included in the Health Insurance Portability and Accountability Act (HIPAA) mandates.

X12 Provider Information transaction.

X12 Patient Information transaction. This transaction is expected to be part of the Health Insurance Portability and Accountability Act (HIPAA) claim attachments standard.

X12 Health Care Claims Status Inquiry transaction. Version 4010 of this transaction has been included in the Health Insurance Portability and Accountability Act (HIPAA) mandates.

X12 HealthCare Claim Status Response transaction. Version 4010 of this transaction has been included in the Health Insurance Portability and Accountability Act (HIPAA) mandates. This transaction is also expected to be part of the HIPAA claim attachments standard.