ICD-10 Code H53.63 – Congenital night blindness (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H53.63 – Congenital night blindness
What it is
H53.63 identifies congenital night blindness, a condition present from birth or early life in which vision is reduced in dim light. You use it when the record clearly documents this inherited or developmental visual problem.
Clinical signs
Typical findings include difficulty seeing in low light, delayed dark adaptation, and otherwise variable daytime vision. Clinical features vary; refer to documentation.
When to use this code
Use H53.63 when the provider documents congenital night blindness, nyctalopia present since birth, or a congenital retinal disorder causing poor night vision. It may also fit specialist notes describing longstanding dim-light vision impairment without another more specific diagnosis. Check documentation if the cause is not stated.
Do not use for
Do not use this code for acquired night blindness from vitamin A deficiency, cataract, or other noncongenital eye disease. If the chart only says “poor vision at night” without a congenital diagnosis, check documentation.
Coding tip
Code H53.63 only when the congenital nature is explicit in the record.