Attention: Retained for backward compatibility only in version 2.7. This is used only in the CD Channel Definition data type, which has been retained for backward compatibility only in version 2.7.
As of v2.7 a third tuple, formerly known as triplet, has been added to the CSU data type. Additionally, 3 new components were added to each tuple such that each tuple now has a total of 7 components. The Original Text component applies to the CSU as a whole.
HL7 Component Table - CSU - Channel Sensitivity and Units
| Core Framework | Base Standard Profile | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Seq# | Description | Interpretation | Flags | Cardinality | Length | C.LEN | Vocabulary | Data Type | Implement | Cardinality | Vocabulary |
 CSU |
|||||||||||
 1 |
Channel Sensitivity | [1..1] | NM | SHALL | |||||||
2 |
Unit of Measure Identifier | C Condition defined for this element [1..1] [0..0] |
ST | MAY | |||||||
| 3 |
Unit of Measure Description | C Condition defined for this element [1..1][0..0] |
ST | MAY | |||||||
| 4 |
Unit of Measure Coding System | C Condition defined for this element [1..1][0..0] |
codingSystem (CD VS) | ID | MAY | (CS) | |||||
| 5 |
Alternate Unit of Measure Identifier | [0..1] | ST | ||||||||
| 6 |
Alternate Unit of Measure Description | [0..1] | ST | ||||||||
| 7 |
Alternate Unit of Measure Coding System | C Condition defined for this element [1..1][0..0] |
codingSystem (CD VS) | ID | MAY | (CS) | |||||
| 8 |
Unit of Measure Coding System Version ID | C Condition defined for this element [1..1][0..0] |
ST | MAY | |||||||
| 9 |
Alternate Unit of Measure Coding System Version ID | [0..1] | ST | ||||||||
| 10 |
Original Text | [0..1] | ST | ||||||||
| 11 |
Second Alternate Unit of Measure Identifier | [0..1] | ST | ||||||||
| 12 |
Second Alternate Unit of Measure Text | [0..1] | ST | ||||||||
| 13 |
Name of Second Alternate Unit of Measure Coding Sy | [0..1] | codingSystem (CD VS) | ID | (CS) | ||||||
| 14 |
Second Alternate Unit of Measure Coding System Ver | C Condition defined for this element [1..1][0..0] |
ST | MAY | |||||||
| 15 |
Unit of Measure Coding System OID | C Condition defined for this element [1..1][0..0] |
ST | MAY | |||||||
| 16 |
Unit of Measure Value Set OID | [0..1] | ST | ||||||||
| 17 |
Unit of Measure Value Set Version ID | C Condition defined for this element [1..1][0..0] |
DTM | MAY | |||||||
| 18 |
Alternate Unit of Measure Coding System OID | C Condition defined for this element [1..1][0..0] |
ST | MAY | |||||||
| 19 |
Alternate Unit of Measure Value Set OID | [0..1] | ST | ||||||||
| 20 |
Alternate Unit of Measure Value Set Version ID | C Condition defined for this element [1..1][0..0] |
DTM | MAY | |||||||
| 21 |
Second Alternate Unit of Measure Coding System OID | C Condition defined for this element [1..1][0..0] |
ST | MAY | |||||||
| 22 |
Second Alternate Unit of Measure Value Set OID | [0..1] | ST | ||||||||
| 23 |
Second Alternate Unit of Measure Value Set Vers.ID | C Condition defined for this element [1..1][0..0] |
ST | MAY | |||||||
Definition: This data type defines the channel sensitivity (gain) and the units in which it is measured in a waveform result.
Definition: This component transmits the nominal value that corresponds to one unit in the waveform data, that is, the effective resolution of the least significant bit of the ADC, and the polarity of the channel.
Definition: The unit designation for the channel sensitivity. This field is required if the unit of measure description is not present.
Definition: The full text name of the unit of measure identifier. This field is required if the unit of measure identifier is not present.
Definition: Specifies the designated system of units. Refer to HL7 Table 0396 - Coding System in Chapter 2C, Code Tables, for valid values. This component is required if the CSU.2 Unit of Measure Identifier is present.
Both CSU.4 and CSU.15 may be populated. Receivers should not identify a code based on its position within the tuples (Identifier, Alternate Identifier, or Second Alternate Identifier) or position within a repeating field. Instead, the receiver should always examine the codingSystem as specified in CSU.4 and/or CSU.15, the "Coding System" component or the "Coding System OID" for the tuple.
Definition: A sequence of characters that uniquely identifies an alternate units designation for the channel sensitivity. Analogous to CSU.2 Unit of Measure Identifier.
Usage Notes: The Alternate Identifier is used to represent the local or user seen code as described. If present, it obeys the same rules of use and interpretation as described for component 1. If both are present, the identifiers in component 4 and component 1 should have exactly the same meaning, i.e., they should be exact synonyms.
Definition: The full text name of the alternate unit of measure identifier. Analogous to CSU.3 Unit of Measure Description.
Definition: Specifies the coding system for the alternate unit of measure. Refer to HL7 Table 0396 - Coding System in Chapter 2C, section "Coding System Table" for valid values. Analogous to CSU.4 Unit of Measure Coding System.
This field is required if the CSU.5 Alternate Unit of Measure Identifier is present. Both CSU.7 and CSU.18 may be populated. Receivers should not identify a code based on its position within the tuples (Identifier, Alternate Identifier, or Second Alternate Identifier) or position within a repeating field. Instead, the receiver should always examine the codingSystem as specified in CSU.7 and/or CSU.18, the "Coding System" component or the "Coding System OID" for the tuple.
Definition: This component carries the version for the coding system identified by components 2-4. If CSU.4 is populated with a value other than HL7nnnn or is of table type user-defined, version ID must be valued with an actual version ID. If CSU.4 is populated with a value of HL7nnnn and nnnn is of table type HL7, version ID may have an actual value or it may be absent. If version ID is absent, it will be interpreted to have the same value as the HL7 version number in the message header.
Definition: This component carries the version for the coding system identified by components 5-7. Analogous to CSU.8 Unit of Measure Coding System Version ID.
Definition: The text as seen and/or selected by the user who entered the data. Original text can be used in a structured user interface to capture what the user saw as a representation of the code on the data input screen, or in a situation where the user dictates or directly enters text, it is the text entered or uttered by the user. In a situation where the code is assigned sometime after the text was entered, original text is the text or phrase used as the basis for assigning the code.
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