| Id | 2.16.840.1.113883.10.21.9.1 | Effective Date | 2017‑01‑02Other versions this id:  Useperiod as of 2017‑05‑02
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| Status |  Retired | Version Label | |
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| Name | Useperiod | Display Name | UV Use Period |
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| Description | This element encodes the start and stop time of the medication regimen. This an interval of time (xsi:type='IVL_TS'), and must be specified as shown. This is an additional constraint placed upon CDA Release 2.0 by this profile, and simplifies the exchange of start/stop and frequency information between EMR systems. |
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| Classification | CDA Entry Level Template |
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| Open/Closed | Open (other than defined elements are allowed) |
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| Example | | Take medication from 27-05-2011 (start) to 03-06-2011 (end) | <effectiveTime xsi:type="IVL_TS">
<low value="20110527000000+0200"/> <high value="20110603235959+0200"/></effectiveTime> |
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| Example | | Take medication from 27-05-2011 (start) for one week | <effectiveTime xsi:type="IVL_TS">
<low value="20110527000000+0200"/> <width value="1" unit="wk"/></effectiveTime> |
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| Example | | Take medication from 27-05-2011 on (start), end open | <effectiveTime xsi:type="IVL_TS">
<low value="20110527000000+0200"/> <high nullFlavor="UNK"/></effectiveTime> |
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| Example | | Take medication for two weeks, start open | <effectiveTime xsi:type="IVL_TS">
<width value="2" unit="wk"/></effectiveTime> |
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| Example | | Information about the Medication Regimen Period not applicable | | <effectiveTime xsi:type="IVL_TS" nullFlavor="NA"/> |
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| Item | DT | Card | Conf | Description | Label |
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| Choice | 0 … 1 | | Elements to choose from:- hl7:effectiveTime[1][hl7:low]
- hl7:effectiveTime[1][hl7:width]
- hl7:effectiveTime[1][@nullFlavor]
|  | hl7:effectiveTime
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| IVL_TS | | | Medication Regimen Period | (Use...iod) | | where [1] [hl7:low] | |  | | @xsl:type
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| | 1 … 1 | F | IVL_TS | | | hl7:low
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| TS | 1 … 1 | R | Start date/time | (Use...iod) | | | hl7:high
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| TS | 1 … 1 | R | End date/time | (Use...iod) | | hl7:effectiveTime
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| IVL_TS | | | Medication Regimen Period width know, exact start/end date/time unknown | (Use...iod) | | where [1] [hl7:width] | | | | hl7:width
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| PQ | 1 … 1 | R | | (Use...iod) | | | 0 … 1 | | | | | CONF | | The value of @unit shall be drawn from value set 2.16.840.1.113883.11.21.1 Medication Time Units (UCUM) (DYNAMIC) |
| | hl7:effectiveTime
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| IVL_TS | | | Medication Regimen Period not applicable | (Use...iod) | | where [1] [@nullFlavor] | | | | @nullFlavor
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| | 1 … 1 | F | NA |
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Retired
