Pupillary abnormality, bilateral

This code signifies an abnormal pupillary response or appearance affecting both eyes. This can include conditions such as anisocoria (unequal pupil size) that is bilateral, dyscoria (abnormally shaped pupils), or other irregularities in pupillary function or morphology when present in both eyes. It indicates a deviation from normal pupillary characteristics.

Use this code when documentation specifies a bilateral pupillary abnormality without further specificity regarding the underlying cause or a more precise diagnosis. This code is appropriate for findings like bilaterally sluggish pupils, bilateral irregular pupils, or bilateral fixed pupils when the definitive etiology is unknown or not yet coded. Documentation should clearly state the bilateral nature of the abnormality.

• Do not use this code if a more specific diagnosis for the pupillary abnormality is known and documented (e.g., Horner's syndrome, Adie's pupil).
• Ensure the medical record explicitly states the abnormality affects "both eyes" or is "bilateral."
• Consider sequencing this code after any underlying systemic disease or neurological condition that may be causing the pupillary abnormality, if applicable.