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RCD - row column definition

HL7 Component Table - RCD - row column definition
Seq# Description Implement Flags Cardinality Length C.LEN Vocabulary Data Type
1 Segment Field Name SHALL [0..1] [6..12]     ST
2 HL7 Data Type SHALL [0..1] [2..3]     0440 ID
3 Maximum Column Width SHALL [0..1] [1..5]     NM

Components: <Segment Field Name (ST)> & <HL7 Data Type (ID)> & <Maximum Column Width (NM)>

Definition: This specifies the format of a column in terms of a segment field name, a data type, and a maximum length.

Example: This defines a column containing the value of the "last name" component of PID-5, expressed as a ST data type with a maximum width of 20.


RCD-1: Segment Field Name (ST)

Definition: The HL7 segment field name, which identifies the field occupying the column. Refer to Section 2.A.59.1, "Segment Field Name (ST)," for segment field name definition conventions.

RCD-2: HL7 Data Type (ID)

Definition: The two or three character HL7 data type. Refer to HL7 Table 0440 – Data Types for valid values.

RCD-3: Maximum Column Width (NM)

Definition: The maximum width of the column, as dictated by the responding system. This may vary from the HL7-defined maximum field length.