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["Diagnosis": "Left Ventricular Assist Device Related Diagnoses"]

Performance/Reporting Period
Value Set Description from VSAC
Clinical Focus: The purpose of this value set is to represent concepts related to diagnoses associated with left ventricular assist devices.
Data Element Scope: This value set may use a model element related to Diagnosis.
Inclusion Criteria: Includes concepts that represent diagnoses related to heart transplant.
Exclusion Criteria: No exclusions.

Constrained to codes in the Diagnosis: Left Ventricular Assist Device Related Diagnoses value set (2.16.840.1.113762.1.4.1178.58)

QDM Datatype and Definition


Data elements that meet criteria using this datatype should document the Condition/Diagnosis/Problem and its corresponding value set. The onset dateTime corresponds to the implicit start dateTime of the datatype and the abatement dateTime corresponds to the implicit stop dateTime of the datatype. If the abatement dateTime is not present, then the diagnosis is considered to still be active. When this datatype is used with timing relationships, the criterion is looking for an active diagnosis for the time frame indicated by the timing relationships.

Timing: The prevalencePeriod references the time from the onset date to the abatement date.

QDM Attributes


The time the data element was entered into the clinical software. Note, some datatypes include both relevant dateTime and author dateTime attributes. When both are present, author dateTime is included to accommodate negation rationale.

The author dateTime addresses when an activity is documented. Documentation can occur at the beginning, during, at the end, or subsequent to the end of the activity. The author dateTime should be used only if the relevantPeriod cannot be obtained or to represent the time negation rationale is documented.

Note: negation rationale indicates a one-time documentation of a reason an activity is not performed. Negation of QDM datatype related actions for a reason always use the author dateTime attribute to reference timing and must not use relevantPeriod.


prevalencePeriod is the time from onset dateTime to abatement dateTime.
Last Updated: Jul 15, 2022