ICD-10 Code H52.521 – Paresis of accommodation, right eye (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H52.521 – Paresis of accommodation, right eye
What it is
This code identifies weakness of the eye’s focusing response in the right eye. It means the right eye has reduced ability to accommodate for near vision.
Clinical signs
Typical findings include blurred near vision, difficulty shifting focus from far to near, and eye strain. Clinical features vary; refer to documentation.
When to use this code
Use this code when the provider documents paresis of accommodation limited to the right eye. It applies when the record clearly identifies unilateral involvement and the diagnosis is not described more generally.
If the note only says accommodative weakness without laterality, check documentation before assigning H52.521. Use the documented eye when the right eye is specifically named.
Do not use for
Do not use this code for unspecified accommodative problems or bilateral accommodation disorders. Do not assign it when the chart does not identify the right eye.
Coding tip
Confirm laterality in the ophthalmology note before coding, because H52.521 is specific to the right eye.