ICD-10 Code D31.40 – Benign neoplasm of unspecified ciliary body (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code D31.40 – Benign neoplasm of unspecified ciliary body
What it is
D31.40 identifies a benign, noncancerous growth in the ciliary body of the eye when the exact site is not specified. Use it when the record documents a benign neoplasm of the ciliary body without laterality or more detailed location.
Clinical signs
Clinical features vary; refer to documentation. Eye findings may include an intraocular mass, visual disturbance, or incidental discovery on ophthalmic examination, but you should code only what is documented.
When to use this code
Use D31.40 when the clinician documents a benign neoplasm involving the ciliary body and does not specify right or left eye. It also fits when the note confirms a benign tumor but leaves the precise ciliary body site unspecified. If the record is unclear, check documentation before assigning the code.
Do not use for
Do not use this code for malignant neoplasms, other eye structures, or lesions documented as uncertain or suspicious. If the laterality or exact site is stated, choose the more specific code.
Coding tip
Look for laterality and exact anatomic wording in the ophthalmology note before defaulting to an unspecified code.