Pupillary abnormality, unspecified eye

This code signifies an uncharacterized deviation from normal pupillary function or appearance in an unspecified eye. It indicates that a pupillary abnormality has been identified, but its specific nature (e.g., anisocoria, mydriasis, miosis, irregular shape, abnormal light reflex) has not been documented.

Use this code when the medical record clearly states the presence of a pupillary abnormality but lacks further detail regarding its specific type or the affected eye. This often occurs in initial assessments or when a more precise diagnosis is pending further investigation. Documentation should indicate "pupillary abnormality" without additional specifying terms.

• Avoid using this code if the specific type of pupillary abnormality (e.g., anisocoria, miosis) is documented; instead, use a more specific code from the H21.5- series.
• Do not use this code if the affected eye is specified (e.g., right, left, bilateral); choose the appropriate laterality code.
• This code is typically used as a temporary or placeholder diagnosis when a definitive diagnosis is not yet established.