ICD-10-CM > H00-H59 > H30-H36 > H35 > H35.1 > H35.15 H35.15 Retinopathy of prematurity, stage 4 Non-Billable/Non-Specific Codes H35.151Retinopathy of prematurity, stage 4, right eyeH35.152Retinopathy of prematurity, stage 4, left eyeH35.153Retinopathy of prematurity, stage 4, bilateralH35.159Retinopathy of prematurity, stage 4, unspecified eye