LOINC Code 71789-2: Change in systolic blood pressure
71789-2 is a LOINC code used to identify Change in systolic blood pressure in laboratory and clinical observation data. You may see this code in lab systems, lab reports, EHR exports, interoperability feeds, or other structured clinical data exchanges. LOINC codes identify tests, measurements, observations, survey items, and clinical questions in a standardized way. It is associated with the component Change in systolic blood pressure. It is commonly used with the system or sample type ^Patient.
What is this code?
LOINC codes identify tests, measurements, observations, survey items, and clinical questions in a standardized way. It is associated with the component Change in systolic blood pressure. It is commonly used with the system or sample type ^Patient.
When is it used?
- Used in lab systems, EHRs, and clinical data exchange.
- May identify a test, observation, survey item, or clinical document request rather than a diagnosis.
- Status: ACTIVE
- Order vs observation: Observation
What it does not mean
- The code identifies the observation or test, not the actual result.
Key facts
- Change in systolic blood pressure
- The term "change in systolic blood pressure" has been developed for use in eMeasures that assess differences in blood pressure readings between two points in time. The LOINC term is intended to represent the difference between two systolic blood pressure readings as a positive integer, a negative integer, or a zero. This "change over time" reflects both the direction and degree of change in blood pressure for patients who are originally not at therapeutic goal. The exact time periods of reference will be explicitly defined elsewhere
- BP; Chg in sys B/P; Exchange; Point in time; QNT; Quan; Quant; Quantitative; Random; Replace; Survey; SURVEY.GNHLTH
Where you may see this code
You may see this code in lab systems, lab reports, EHR exports, interoperability feeds, or other structured clinical data exchanges.
Common synonyms
Frequently asked questions
About this content
This page is prepared by HealthAssure's clinical team using official coding standards from LOINC. AI tools assist with drafting explanations, which are then reviewed and verified by healthcare professionals for accuracy. This content is for informational purposes and does not replace professional medical advice. Meet our team.