LOINC Code 65895-5: Cylinder axis Left eye
65895-5 is a LOINC code used to identify Cylinder axis Left eye 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 Cylinder axis. It is commonly used with the system or sample type Eye.left.
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 Cylinder axis. It is commonly used with the system or sample type Eye.left.
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: TRIAL
What it does not mean
- The code identifies the observation or test, not the actual result.
Key facts
- Cylinder axis Left eye
- Cylinder axis
- The axis indicates the angle in degrees of one of two major meridians the prescribed cylindrical power is in. Which major meridian is referenced is indicated by the cylindrical correction being in plus or minus notation. The axis is measured on an imaginary semicircle with a horizontal baseline that starts with zero degrees in the 3 o'clock (or east) direction, and increases to 180 degrees in a counter-clockwise direction.
- CYL; Eyeball; L; L eye; LT; Occular; Oculis; Ophthalmologic; Optic globe; PhenX; Point in time; QNT; Quan; Quant; Quantitative; Random; 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
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.