Conjunctival edema, unspecified eye

This code signifies the presence of swelling or fluid accumulation within the conjunctiva, the transparent membrane lining the eyelid and covering the white part of the eye. It indicates a generalized, non-specific edema of this ocular tissue, without further specification of the underlying cause or precise location within the conjunctiva.

Assign this code when documentation clearly states "conjunctival edema" without specifying a laterality (e.g., right, left, bilateral). This is appropriate when the physician's assessment does not differentiate between the eyes or when the edema is present in an unknown eye.

• Do not use this code if laterality is documented; instead, select a more specific code (e.g., H11.421, H11.422, H11.423).
• Always review the entire clinical note for any indication of the cause of the edema, as a more specific diagnosis code may be available.
• This code should be used when the documentation is insufficient to assign a more precise code for conjunctival edema.