LOINC Code 19922-4: Expiratory reserve by Helium single breath

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 Expiratory reserve. It is commonly used with the system or sample type Respiratory system.

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
• Method: Helium single breath

What it does not mean

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

Key facts

• Expiratory reserve by Helium single breath
• Expiratory reserve
• 1 breath; Breathing; ER; ERV; He; He SB; Lung; Lungs; Point in time; PULMONARY; Pulmonology; QNT; Quan; Quant; Quantitative; Random; Respiratory; RS; Volume

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