ICD-10 Code H59.033 – Cystoid macular edema following cataract surgery, bilateral (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H59.033 – Cystoid macular edema following cataract surgery, bilateral
What it is
This code identifies cystoid macular edema affecting both eyes after cataract surgery. It describes postoperative swelling in the central retina that can blur or distort vision.
Clinical signs
Typical findings include decreased visual acuity, blurred central vision, and sometimes metamorphopsia. Diagnosis is usually supported by ophthalmic examination and retinal imaging; clinical features vary, refer to documentation.
When to use this code
Use H59.033 when the record clearly states cystoid macular edema in both eyes following cataract extraction or cataract surgery. You should also use it when the postoperative complication is documented as bilateral and attributed to the cataract procedure. If the laterality or surgical cause is unclear, check documentation.
Do not use for
Do not use this code for macular edema without a documented cataract-surgery cause or when only one eye is affected. Do not assign it if the edema is unrelated to surgery or the postoperative relationship is not stated.
Coding tip
Verify both laterality and the link to cataract surgery before coding H59.033.