ICD-10 Code H59.039 – Cystoid macular edema following cataract surgery, unspecified eye (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H59.039 – Cystoid macular edema following cataract surgery, unspecified eye
What it is
This code identifies cystoid macular edema that develops after cataract surgery when the affected eye is not specified. It refers to swelling in the central retina, which can blur vision.
Clinical signs
Typical findings include decreased central vision, blurred or distorted vision, and macular thickening on eye examination. Clinical features vary; refer to documentation.
When to use this code
Use H59.039 when the provider documents cystoid macular edema as a complication of cataract surgery and does not identify the right or left eye. You should code this when the postoperative complication is clearly linked to the cataract procedure. If the record names the eye, use the more specific laterality code instead.
Do not use for
Do not use this code for macular edema from diabetes, retinal vein occlusion, or other non-surgical causes. Do not use it when the provider documents a different postoperative eye disorder. Check documentation.
Coding tip
Confirm both the postoperative relationship and the unspecified laterality before assigning H59.039.