ICD-10 Code H35.00 – Unspecified background retinopathy (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H35.00 – Unspecified background retinopathy
What it is
H35.00 identifies background retinopathy when the specific cause or type is not documented. Use it for retinal changes that are present, but not further classified in the record.
Clinical signs
Findings may include retinal microvascular changes noted on eye examination. Clinical features vary; refer to documentation for the exact retinal description and whether the retinopathy is mild, stable, or progressive.
When to use this code
Use this code when the provider documents background retinopathy without naming a more specific retinopathy type. It is also appropriate when the chart confirms retinal disease but does not specify the underlying cause. If the record identifies diabetic or hypertensive retinopathy, code that condition instead.
Do not use for
Do not use H35.00 for diabetic retinopathy, hypertensive retinopathy, or other clearly specified retinal disorders. Check documentation if the note describes a different retinal lesion or a more precise diagnosis.
Coding tip
Query for the cause and laterality when the note only says “retinopathy,” because a more specific code may be available.