It depends. Not all color vision tests are classified as an “Extended” type. Extended color vision testing is described under CPT code 92283 as a psychophysical test of visual function. Deficiencies and changes in perception of color are ideally tested monocularly and are a summation of function from the visual pathway, optic nerve, and retina, especially the macula with the highest density of cone receptors.
An example of detailed description of procedures, indications, and coding, documentation, and indication guidelines may be found at Decision-Maker Plus.
Importantly, it should be noted that pseudoisochomatic tests (or “PIP” tests), whether printed or digitally presented, are specifically excluded from the definition of an “extended color vision” with 92283 as “color vision testing with pseudoisochromatic plates (such as HRR, Ishihara, and others) is not reported separately but included in the appropriate general or ophthalmological service”.
Additional ColorDx clinical resources and publications can be found on our website: https://konanmedical.com/colordx-cct-hd/
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