LOINC Code 57117-4: Macular grid.outer temporal subfield thickness by OCT

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 Macular grid.outer temporal subfield thickness. It is commonly used with the system or sample type Eye.

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: OCT

What it does not mean

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

Key facts

• Macular grid.outer temporal subfield thickness by OCT
• Macular grid.outer temporal subfield thickness
• Mean ILM-RPE (internal limiting membrane - retinal pigment epithelium) measurement of all A-scans within the temporal sector between the 1500 micrometer and the 3000 micrometer circles, see ETDRS
• Eye; EYE.OCT; Eyeball; Length; Macular grid.OTS thickness; Occular; Oculis; Ophthalmologic; Ophthalmology; Ophtho; Ophthy; Optic globe; Optical Coherence Tomography; Point in time; QNT; Quan; Quant; Quantitative; Random; Thick; Vision; Visual

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