Interfaced Microbiology Results: Discrete or Non-Discrete?
One of the “Menu Set” CMS Final Rule Meaningful Use Stage 1 objective and measures specifies that “at least 40% of all clinical lab tests ordered whose results are in a positive/negative or numerical format are incorporated in certified EHR technology as structured data.” Additionally, the Certification Commission for Health Information Technology (CCHIT - certifying body for EHRs) indicates via IO-AM 07.02 that “The system shall provide the ability to receive and store microbiology laboratory results with organisms recorded as free-text. (Not MU).” This brings to question the handling of interfacing microbiology results into the EHR.
Microbiology results are often longer, textual results including sensitivities. Additionally, microbiology results can have 3 levels of hierarchy:
- Orderable item(s) (Urine Culture)
- Culture(s)/Organism(s) (Light Growth Escherichia Coli)
- Susceptibility(ies) (Amplicillin)
The problem is that most EHRs are not well-suited to rendering interfaced results with three-levels of hierarchy; rather, the EHR is suited for just two levels of hierarchy:
- Orderable(s)
- Resultable(s)
When the interfaced result is sent by the vendor as a “discrete” result, the result likely will not render in the EHR properly:
To accommodate for this, most vendors have the capability of sending the interfaced result as “non-discrete,” or in other words, sending a free-text version of the result. However in an instance where the vendor is able to send “discrete” microbiology results only, the interface analyst is charge with developing a interface customization to translate the “discrete” result to file into the EHR as a “non-discrete”:
The disadvantages of filing the result as “non-discrete” include the likely lack of ability to aggregate or report on these types of results.
For reference the original printed report from the Laboratory Information System (LIS) for the example above (recall that if an interface is not setup, this is the report that is usually provided by the LIS via fax).
Please contact sales@galenhealthcare.com if you or your organization would like assistance in interfacing discrete/non-discrete results to your EHR.




