ICD-10 Code H35.173 – Retrolental fibroplasia, bilateral (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H35.173 – Retrolental fibroplasia, bilateral
What it is
H35.173 identifies bilateral retrolental fibroplasia, an older term for retinopathy of prematurity affecting both eyes. Use it when the record specifically documents this diagnosis.
Clinical signs
Clinical features vary; refer to documentation. Records may note abnormal retinal vessel development, fibrovascular changes, or prior prematurity-related eye disease in both eyes.
When to use this code
Use this code when the provider documents retrolental fibroplasia in both eyes, or clearly links bilateral disease to the diagnosis. It is appropriate for ophthalmology follow-up, history review, or problem lists when the condition remains active or documented. Check documentation if laterality is unclear.
Do not use for
Do not use it for unilateral disease or for nonspecific prematurity-related eye findings without a documented diagnosis. Do not substitute it for other retinal disorders. Check documentation.
Coding tip
Confirm that the chart states “bilateral” or clearly indicates both eyes before assigning H35.173.