9D44 Impairment of colour vision
International Classification of Diseases for Mortality and Morbidity Statistics, 11th Revision, v2024-01
Colour vision refers to the ability to distinguish colour differences. True colour “blindness” is extremely rare. Most colour vision deficiencies are minor, and congenital, with X-linked recessive inheritance (more prevalent among men). Some drugs and optic neuritis may also cause colour vision deficiencies.
inclusions
- achromatopsia
- acquired colour vision deficiency
- colour blindness
postcoordination
Add Stem and/or Extension codes to form a cluster code which adds detail to the condition.
Laterality - only one may be selected
synonyms
- Impairment of colour vision
- colour vision deficiency
- colour blindness
- complete colour blindness
- total colour blindness
- achromatism
- achromatopsia
- acquired colour blindness
- acquired colour vision deficiency
- congenital colour blindness
- protan defect
- monochromatism
- Trichromatism anomaly
- Protanomaly
- Deuteranomaly
- deutan defect
- Protanopia
- Deuteranopia
- Monochromatopsia
- Tritan defect
- Tritanopia
- Tritanomaly
- Red-green colour blindness
- Reduced red-green discrimination
- Reduced red-green vision
- Dichromatopsia
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