ICD-10 Code H36.89 – Other retinal disorders in diseases classified elsewhere (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H36.89 – Other retinal disorders in diseases classified elsewhere
What it is
H36.89 identifies retinal disorders that are caused by another underlying disease but do not fit a more specific retinal code. Use it when the retina is affected secondary to a documented systemic or local condition.
Clinical signs
Clinical features vary; refer to documentation. Findings may include retinal abnormalities noted on eye examination or imaging, with the underlying disease clearly linked to the retinal disorder.
When to use this code
Use H36.89 when the record states a retinal disorder due to another disease and no more specific ICD-10-CM code applies. It is appropriate when the clinician documents a secondary retinal condition, such as retinal involvement from a known systemic illness. Confirm the causal condition is documented.
Do not use for
Do not use this code for primary retinal diseases or when a more specific retinal diagnosis is documented. If the chart does not clearly link the retinal disorder to another disease, check documentation.
Coding tip
Always code the underlying disease first, and use H36.89 only when the retinal disorder is documented as secondary and otherwise unclassified.