Ligneous conjunctivitis, left eye

This code represents a rare, chronic form of conjunctivitis affecting the left eye, characterized by the development of wood-like, pseudomembranous lesions on the conjunctiva. These lesions are rich in fibrin and can recur even after surgical removal. The condition is often associated with plasminogen deficiency.

This code is appropriate for documenting a confirmed diagnosis of ligneous conjunctivitis specifically impacting the left eye. Use this code when the physician's documentation clearly identifies the characteristic pseudomembranous lesions and specifies the left eye as the affected site. Supporting documentation would include ophthalmological examination findings and, potentially, biopsy results.

• Ensure the documentation explicitly states "ligneous conjunctivitis" and specifies the left eye. Do not assume laterality if not clearly documented.
• Distinguish from other forms of pseudomembranous conjunctivitis, such as those caused by bacterial or viral infections, which have different ICD-10-CM codes.
• Consider co-reporting with codes for underlying conditions, such as congenital plasminogen deficiency (D68.2), if documented and relevant to the patient's care.