Malignant neoplasm of left lacrimal gland and duct

This code signifies a cancerous tumor originating in the lacrimal gland or its associated duct on the left side of the face. These neoplasms can affect tear production and drainage, potentially leading to symptoms such as epiphora, proptosis, or a palpable mass in the superotemporal orbit. Histologically, these are often adenoid cystic carcinomas or mucoepidermoid carcinomas.

Assign this code when documentation confirms a primary malignant neoplasm specifically located in the left lacrimal gland or lacrimal duct. This diagnosis is typically established through biopsy and histopathological examination. Supporting documentation will include pathology reports, imaging studies (e.g., MRI, CT scan), and physician notes detailing the tumor's location and malignant nature.

• Ensure laterality is clearly documented as "left" for the lacrimal gland/duct.
• Distinguish between primary malignant neoplasms and secondary (metastatic) involvement; a different code would be used for metastatic disease.
• Do not confuse with benign neoplasms of the lacrimal gland/duct, which have distinct coding.