ICD-11 classes
09 Diseases of the visual system
Vision impairment
9D90 — Vision impairment including blindness

ICD-11 9D90 — Vision impairment including blindness

The table below gives a classification of severity of vision impairment based on visual acuity. For epidemiological studies, it is recommended to collect the following information on visual acuity for each eye, for both eyes open and for distance and near. Uncorrected visual acuity Presenting visual acuity Best corrected visual acuity Blindness is also categorized according to the degree of constriction of the central visual field in the better eye to less than 10 degrees. For capturing and coding of “No vision impairment”, use QA00.62 (QA00.6 Examination of eyes or vision).CategoryVisual acuity *1Worse than:Equal to or better than:No vision impairment6/125/10 (0.5)20/400.31 Mild vision impairment6/125/10 (0.5)20/400.36/183/10 (0.3)20/700.52 Moderate vision impairment6/183/10 (0.3)20/700.56/601/10 (0.1)20/2001.03 Severe vision impairment6/601/10 (0.1)20/2001.03/601/20 (0.05)20/4001.34 Blindness3/601/20 (0.05)20/4001.31/60 or counts fingers (CF)at 1 metre1/50 (0.02)20/1200 or counts fingers (CF)at 1 metre1.85 Blindness1/601/50 (0.02)5/300 (20/1200)1.8Light perception6 BlindnessNo light perception9Undetermined or unspecifiedNear vision impairmentN6 or M 0.8 at 40cms*1 Presented in metres, decimals, feet and logMar

The diagnosis includes nothing.

The diagnosis excludes nothing.

Diagnosis with code 9D90 contains 6 clarifying diagnoses:

1. 9D90.1 — Mild vision impairment
2. 9D90.2 — Moderate vision impairment
3. 9D90.3 — Severe vision impairment
4. 9D90.6 — Blindness
5. 9D90.7 — Near vision impairment
6. QA00.62 — No vision impairment