LOINC Code 57118-2: Macular grid.total volume by OCT
57118-2 is a LOINC code used to identify Macular grid.total volume by OCT 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 Macular grid.total volume. It is commonly used with the system or sample type Eye.
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.total volume. 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.total volume by OCT
- Macular grid.total volume
- The volume between the ILM (internal limiting membrane)and RPE (retinal pigment epithelium) for the entire macular grid. This may be calculated as the sum of each subfield retinal thickness measurement multiplied by the subfield's surface area.
- Eye; EYE.OCT; Eyeball; Occular; Oculis; Ophthalmologic; Ophthalmology; Ophtho; Ophthy; Optic globe; Optical Coherence Tomography; Point in time; QNT; Quan; Quant; Quantitative; Random; Tot; Totl; Vision; Visual; Vol; 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
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.