ICD-10 Code D31.5 – Benign neoplasm of lacrimal gland and duct (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code D31.5 – Benign neoplasm of lacrimal gland and duct
What it is
D31.5 identifies a noncancerous tumor of the lacrimal gland or lacrimal duct. Use it when documentation states a benign neoplasm in this tear-producing or tear-drainage tissue.
Clinical signs
Clinical features vary; refer to documentation. Reported findings may include a localized orbital or eyelid mass, swelling, tearing, or pressure effects, but the diagnosis should be based on documented pathology or specialist assessment.
When to use this code
Use D31.5 when the provider documents a benign tumor arising from the lacrimal gland or duct, including a confirmed benign neoplasm on imaging, biopsy, or surgical pathology. It also fits follow-up visits for an established benign lesion when no malignancy is documented. If the note only says “mass” or “lesion,” check documentation before coding.
Do not use for
Do not use this code for malignant tumors, inflammatory lacrimal disorders, or nonspecific eye swelling without a documented benign neoplasm. Check documentation if the site is unclear or if the lesion is not confirmed as benign.
Coding tip
Verify the exact lacrimal site and benign nature in the record before assigning D31.5.