ICD-10 Code C69.21 – Malignant neoplasm of right retina (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code C69.21 – Malignant neoplasm of right retina
What it is
C69.21 identifies a malignant tumor arising in the retina of the right eye. Use it when the documentation clearly states a cancerous retinal neoplasm on the right side.
Clinical signs
Findings may include reduced vision, visual field changes, leukocoria, or an abnormal retinal mass on examination. Clinical features vary; refer to documentation.
When to use this code
Use this code when the provider documents malignant neoplasm of the right retina, including suspected or confirmed retinal cancer in the right eye. It may appear in ophthalmology, oncology, or pathology records. Code from the documented laterality and site only.
Do not use for
Do not use it for benign retinal lesions, retinal detachment, or unspecified eye laterality. Check documentation if the record names a different ocular structure or does not confirm malignancy.
Coding tip
Verify both the anatomic site and right-sided laterality before assigning C69.21.