ICD-10 Code H35.13 – Retinopathy of prematurity, stage 2 (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H35.13 – Retinopathy of prematurity, stage 2
What it is
H35.13 identifies retinopathy of prematurity at stage 2, a moderate retinal change seen in premature infants. It documents the stage of abnormal blood vessel development in the retina.
Clinical signs
Clinical features vary; refer to documentation. Stage 2 typically means a visible ridge at the border between vascular and avascular retina on eye examination.
When to use this code
Use this code when the provider documents retinopathy of prematurity, stage 2, or equivalent ophthalmology findings. It is appropriate for neonatal eye exams that specifically identify this stage. If the note only says retinopathy of prematurity without a stage, check documentation.
Do not use for
Do not use this code for other stages of retinopathy of prematurity or for nonspecific prematurity-related eye findings. Do not assign it when the stage is not documented.
Coding tip
Always capture the exact stage from the ophthalmology report before assigning H35.13.