ICD-10 Code D31.20 – Benign neoplasm of unspecified retina (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code D31.20 – Benign neoplasm of unspecified retina
What it is
This code identifies a noncancerous growth in the retina when the exact retinal site is not documented. Use it for a benign retinal neoplasm that is not further specified.
Clinical signs
Clinical features vary; refer to documentation. Findings may include an incidental retinal mass or lesion on eye exam, sometimes with visual disturbance, but diagnosis should be supported by the clinician’s description.
When to use this code
Use D31.20 when the record states a benign neoplasm of the retina and does not specify the retinal quadrant or other exact location. It also fits when the provider documents “unspecified retina” or equivalent wording. Check documentation if the lesion is described as suspicious, malignant, or of another ocular structure.
Do not use for
Do not use this code for malignant retinal tumors, non-retinal eye lesions, or lesions with a clearly documented more specific retinal site. If the pathology or clinician notes a different diagnosis, code that condition instead.
Coding tip
Code the most specific retinal site available; if the note does not name one, D31.20 is appropriate.