LOINC Code 82644-6: Summed difference score for 17 segment model Myocardium SPECT

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 Summed difference score.17 segment model. It is commonly used with the system or sample type Myocardium.

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
• Method: NM.SPECT

What it does not mean

• The code identifies the observation or test, not the actual result.

Key facts

• Summed difference score for 17 segment model Myocardium SPECT
• Summed difference score.17 segment model
• CARD.PROC; Cardio; Cardiology; Heart Disease; Point in time; QNT; Quan; Quant; Quantitative; Rad; Radiology; Random; Scale; Scre; SDS; SDS.17

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