MSH (Message Header) Function

The MSH segment defines the intent, source, destination, and some specifics of the syntax of a message.

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QPD (Query Parameter Definition) Function

The QPD segment defines the parameters of the query.

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RCP (Response Control Parameter) Function

The RCP segment defines the parameters of the query.

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PID (Patient Identification) Function

The PID segment is used by all applications as the primary means of communicating patient identification information.

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PD1 (Patient Additional Demographic) Function

The patient additional demographic segment contains demographic information that is likely to change about the patient.

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NK1 (Next Of Kin / Associated Parties) Function

The NK1 segment contains information about the patient's other related parties.

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IN1 (Insurance) Function

The IN1 segment contains insurance policy coverage information necessary to produce properly pro-rated and patient and insurance bills.

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ORC (Common Order) Function

The Common Order segment (ORC) is used to transmit fields that are common to all orders (all types of services that are requested).

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RXA (Pharmacy/treatment Administration) Function

The ORC must have the filler order number and the order control code RE. As a site-specific variant, the RXO and associated RXCs and/or the RXE (and associated RXCs) may be present if the receiving application needs any of their data. The RXA carries the administration data.

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RXR (Pharmacy/treatment Route) Function

The Pharmacy/Treatment Route segment contains the alternative combination of route, site, administration device, and administration method that are prescribed as they apply to a particular order.

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OBX (Observation/result) Function

The OBX segment is used to transmit a single observation or observation fragment.

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NTE (Notes And Comments) Function

The NTE segment is defined here for inclusion in messages defined in other chapters.

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SFT (Software Segment) Function

This segment provides additional information about the software product(s) used as a Sending Application. The primary purpose of this segment is for diagnostic use.

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SPM (Specimen) Function

The intent of this segment is to describe the characteristics of a specimen.

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OBR (Observation Request) Function

The Observation Request (OBR) segment is used to transmit information specific to an order for a diagnostic study or observation, physical exam, or assessment.

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PV1 (Patient Visit) Function

The PV1 segment is used by Registration/Patient Administration applications to communicate information on an account or visit-specific basis.

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SCH (Scheduling Activity Information) Function

The SCH segment contains general information about the scheduled appointment.

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