Acute dacryocystitis of right lacrimal passage

This code signifies an acute inflammatory infection of the lacrimal sac, specifically affecting the right eye. It typically presents with sudden onset of pain, redness, and swelling in the medial canthal region, often accompanied by purulent discharge. This condition results from obstruction of the nasolacrimal duct, leading to bacterial stasis and infection.

Use this code when documentation clearly indicates an acute infection of the right lacrimal sac. This diagnosis is supported by findings such as tenderness, erythema, and swelling over the lacrimal sac on the right side, potentially with expressible pus. It is appropriate for initial encounters and exacerbations of acute dacryocystitis.

• Ensure laterality is clearly documented (right, left, or bilateral) to avoid unspecified coding.
• Distinguish from chronic dacryocystitis (H04.4-) which has a different clinical presentation and coding.
• Look for documentation of underlying causes, such as nasolacrimal duct obstruction, which may require additional coding.