ICD-10 Code D31.6 – Benign neoplasm of unspecified site of orbit (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code D31.6 – Benign neoplasm of unspecified site of orbit
What it is
D31.6 identifies a noncancerous tumor in the orbit when the exact orbital site is not specified. Use it for documentation that confirms a benign orbital neoplasm but does not name the precise structure.
Clinical signs
Clinical features vary; refer to documentation. Orbital masses may present with swelling, eye displacement, or visual disturbance, but the chart should clearly support a benign neoplasm in an unspecified orbital location.
When to use this code
Use D31.6 when the provider documents a benign orbital tumor and does not identify whether it involves the eyelid, lacrimal gland, or another named orbital site. It also fits cases where imaging or pathology confirms benignity, but the site remains unspecified.
Do not use for
Do not use this code for malignant orbital tumors, inflammatory masses, or lesions outside the orbit. If the record names a specific orbital subsite, choose the more precise code instead.
Coding tip
Confirm both benign behavior and unspecified orbital location in the note before assigning D31.6.