ICD-10 Code H35.131 – Retinopathy of prematurity, stage 2, right eye (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H35.131 – Retinopathy of prematurity, stage 2, right eye
What it is
This code identifies retinopathy of prematurity affecting the right eye at stage 2. It means abnormal retinal blood vessel development has progressed beyond mild disease, but not to more advanced stages.
Clinical signs
Clinical features vary; refer to documentation. Stage 2 is defined by a visible ridge at the vascular-avascular junction on eye examination in a premature infant.
When to use this code
Use this code when the record clearly documents stage 2 retinopathy of prematurity in the right eye. You should code it from ophthalmology or neonatal eye screening findings, not from prematurity alone. If laterality or stage is not specified, check documentation.
Do not use for
Do not use this code for retinopathy of prematurity in the left eye, bilateral disease, or a different stage. Do not assign it when the chart only says “ROP” without stage and eye laterality.
Coding tip
Confirm both stage and laterality in the eye exam report before assigning H35.131.