EDI101 Questions and Answers

Similar to profile variables, purge settings follow a hierarchy where the more specific configuration overrides the more general one. Because the Interface Specification is more specific than the System Definitions, its value of 45 days takes precedence. Messages for interfaces using that specification will be eligible for purging after 45 days.

In HL7 v2 messaging, a standard naming convention is used to identify specific data locations. The format follows Segment-Field.Component.Subcomponent. For example, PID-5 represents the Patient Name field. To specify a component within that field (like the Given Name, which is the 2nd component), a dot is used as a separator. Therefore, PID-5.2 correctly identifies the 2nd component of the 5th field.

HL7 uses specific characters as delimiters to separate data. Based on a standard MSH segment (MSH|^~ & ), the characters & (subcomponent separator) and ~ (repetition separator) are special characters. If these characters appear as part of the actual data text, they must be " escaped " using the escape character (usually \) so the interface parser doesn ' t mistake them for structural separators.

Patient Validation is a critical safety feature. Its primary purpose is to cross-reference multiple identifiers (like Name, DOB, and Sex) received in a message against the record found via the ID. If the ID points to " John Doe " but the message text says " Jane Smith, " validation will fail and prevent clinical data from filing to the wrong patient record , which is a major patient safety risk.

The Criteria tab allows for precise filtering of logs. Analysts can search for errors associated with a specific message (Option B), filter for specific error codes to investigate a known issue (Option C), or isolate critical issues by filtering for a severity of " Failure " (Option D). Severity overrides (Option A) are a configuration setting rather than a standard search filter for the log report itself.

Both Message Search and the Message Companion are patient-centric tools. Message Search allows for broad criteria including patient identifiers and timestamps across various interfaces. The Message Companion is a specialized tool often accessed directly from patient clinical records, allowing users to see all incoming and outgoing messages specifically for that patient within a defined timeframe.

The Interface Monitor is the primary dashboard for interface administrators. It provides a comprehensive overview of health, including whether the interface is connected ( Communication status ), the volume of traffic waiting to be processed ( Control Queue ), any messages that were manually bypassed ( skipped messages ), and a summary of errors encountered during the day.

Duplicate Prevention logic is shared across the Epic platform through the Identity Duplicate Configuration (IDC) record. This record defines the scoring logic and the high and low thresholds used to determine if a patient being created by an interface is a definite match to an existing record, a potential duplicate that needs review, or a completely new patient. Bridges leverages these enterprise-wide Identity settings to ensure consistency in how duplicates are handled.

Retriggering is specifically an outgoing interface action. Therefore, Incoming messages (Option D) cannot be retriggered. Additionally, to maintain a clear audit trail and prevent logic errors, Bridges does not allow you to retrigger a message that was already the result of a retrigger (Option A).

A message shows as " waiting " when it has been received but not yet processed by the Filer. Common causes include:

High Volume: The Filer Daemon is working through a backlog.

Filer Daemon Stopped: If the Filer is not running, no messages can move from the queue to the database.

Holding Queue: The message is specifically waiting for a patient record lock to be released before it can file.

The Communications Daemon (Option D) is responsible for receiving the message; if it weren ' t running, the message wouldn ' t even be in the search results yet.