Acute atopic conjunctivitis, unspecified eye

This code signifies an acute inflammatory condition of the conjunctiva, the membrane lining the eyelid and covering the white part of the eye, specifically triggered by an allergic reaction. It presents with sudden onset of symptoms such as itching, redness, swelling, and watery discharge, without specifying which eye is affected.

Use this code when documentation clearly indicates an acute allergic conjunctivitis, often in patients with a history of atopy (e.g., asthma, eczema, allergic rhinitis). This code is appropriate when the medical record does not specify laterality (left or right eye).

• Ensure documentation specifies "acute" and "atopic" or "allergic" to support this diagnosis.
• If laterality is documented (e.g., right eye, left eye, bilateral), use the more specific codes H10.11, H10.12, or H10.13.
• Do not confuse with non-allergic or chronic forms of conjunctivitis; these have distinct codes.