ICD-10 Code H35.139 – Retinopathy of Prematurity, Stage 2, Unspecified Eye (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H35.139 – Retinopathy of prematurity, stage 2, unspecified eye
What it is
This code identifies retinopathy of prematurity, stage 2, affecting an unspecified eye. It is used when documentation confirms stage 2 disease but does not specify right or left eye.
Clinical signs
Stage 2 retinopathy of prematurity shows a distinct ridge between vascular and avascular retina. Clinical features vary; refer to documentation and ophthalmology findings.
When to use this code
Use H35.139 when the record states stage 2 retinopathy of prematurity and laterality is not documented. It also fits follow-up visits if the diagnosis remains active and the eye is still unspecified. Check documentation if the note only says prematurity-related retinal changes without staging.
Do not use for
Do not use this code for other stages of retinopathy of prematurity or for unspecified retinopathy without stage 2 documentation. Do not assign it if the provider identifies a specific eye and a laterality-specific code is available.
Coding tip
Confirm both the stage and laterality in the ophthalmology note before coding; if either is missing, query or code only what is documented.