TID 4108 Tracking Identifier
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### TID 4108 Tracking Identifier

This template provides a means to identify an object for longitudinal tracking, potentially across multiple Structured Reports, over time.

Type:

  Non-Extensible

Order:

  Significant

Table TID 4108. Tracking Identifier

| NL | Rel with Parent | VT | Concept Name | VM | Req Type | Condition | Value Set Constraint
--- | --- | --- | --- | --- | --- | --- | --- | ---
1 |  |  | TEXT | EV (112039, DCM, "Tracking Identifier") | 1 | MC | At least one of row 1 or 2 shall be present. | A string of characters with case being non-significant. Leading and trailing spaces and control characters are forbidden.
2 |  |  | UIDREF | EV (112040, DCM, "Tracking Unique Identifier") | 1 | MC | At least one of row 1 or 2 shall be present. |

Content Item Descriptions

Tracking Identifier | A human readable identifier for longitudinal tracking, e.g., "Watchlist Nodule 1".
Tracking Unique Identifier | This is distinct from the Observation UID (0040,A171) that may be present in the data set for each content item, which identifies only a specific observation, not an object tracked over time, and each tracked object may have many observations.

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