To identify dependencies among and the content of hierarchically related groups of data segments
To uniquely identify a transaction to an application
To specify the validity of the request and indicate follow-up action authorized
To specify health care services review information
To specify the outcome of a health care services review
To specify identifying information
To specify any or all of a date, a time, or a time period
To supply information related to the delivery of health care
To specify the delivery pattern of health care services
To supply information on conditions
To supply information specific to hospital claims
To supply information related to the ambulance service rendered to a patient
To supply information related to the chiropractic service rendered to a patient
To supply information regarding certification of medical necessity for home oxygen therapy
To supply information related to the certification of a home health care patient
To provide a free-form format that allows the transmission of text information