ICD-9 Diagnosis Code 366.41

Diabetic cataract

Diagnosis Code 366.41

ICD-9: 366.41
Short Description: Diabetic cataract
Long Description: Diabetic cataract
This is the 2014 version of the ICD-9-CM diagnosis code 366.41

Code Classification
  • Diseases of the sense organs
    • Disorders of the eye and adnexa (360-379)
      • 366 Cataract

Information for Medical Professionals

Code Edits
The following edits are applicable to this code:
Manifestations not allowed as principal diagnosis Additional informationCallout TooltipManifestations not allowed as principal diagnosis
Manifestations not allowed as principal diagnosis: Manifestation codes describe the manifestation of an underlying disease, not the disease itself, and therefore should not be used as a principal diagnosis.

Convert to ICD-10 Additional informationCallout TooltipGeneral Equivalence Map
The ICD-10 and ICD-9 GEMs are used to facilitate linking between the diagnosis codes in ICD-9-CM and the new ICD-10-CM code set. The GEMs are the raw material from which providers, health information vendors and payers can derive specific applied mappings to meet their needs.

Index of Diseases and Injuries
References found for the code 366.41 in the Index of Diseases and Injuries:

    • Cataract (anterior cortical) (anterior polar) (black) (capsular) (central) (cortical) (hypermature) (immature) (incipient) (mature)� 366.9
      • diabetic 250.5 [366.41]
        • due to secondary diabetes 249.5 [366.41]
      • snowflake 250.5 [366.41]
        • due to secondary diabetes 249.5 [366.41]
    • Cataracta 366.10
      • diabetic 250.5 [366.41]
        • due to secondary diabetes 249.5 [366.41]
    • Diabetes, diabetic (brittle) (congenital) (familial) (mellitus) (severe) (slight) (without complication) 250.0
      • cataract 250.5 [366.41]
        • due to secondary diabetes 249.5 [366.41]
      • secondary (chemical-induced) (due to chronic condition) (due to infection) (drug-induced) 249.0
        • cataract 249.5 [366.41]

Information for Patients


A cataract is a clouding of the lens in your eye. It affects your vision. Cataracts are very common in older people. By age 80, more than half of all Americans either have a cataract or have had cataract surgery.

A cataract can occur in either or both eyes. It cannot spread from one eye to the other. Common symptoms are

  • Blurry vision
  • Colors that seem faded
  • Glare - headlights, lamps or sunlight may seem too bright. You may also see a halo around lights.
  • Not being able to see well at night
  • Double vision
  • Frequent prescription changes in your eye wear

Cataracts usually develop slowly. New glasses, brighter lighting, anti-glare sunglasses or magnifying lenses can help at first. Surgery is also an option. It involves removing the cloudy lens and replacing it with an artificial lens. Wearing sunglasses and a hat with a brim to block ultraviolet sunlight may help to delay cataracts.

NIH: National Eye Institute

  • Cataract
  • Cataract removal
  • Slit-lamp exam
  • Standard ophthalmic exam

[Read More]

Diabetic Eye Problems

Also called: Diabetic retinopathy

If you have diabetes, your blood glucose, or blood sugar, levels are too high. Over time, this can damage your eyes. The most common problem is diabetic retinopathy. It is a leading cause of blindness in American adults.

Your retina is the light-sensitive tissue at the back of your eye. You need a healthy retina to see clearly. Diabetic retinopathy damages the tiny blood vessels inside your retina.

You may not notice it at first. Symptoms can include

  • Blurry or double vision
  • Rings, flashing lights, or blank spots
  • Dark or floating spots
  • Pain or pressure in one or both of your eyes
  • Trouble seeing things out of the corners of your eyes

Treatment often includes laser treatment or surgery, with follow-up care.

Two other eye problems can happen to people with diabetes. A cataract is a cloud over the lens of your eye. Surgery helps you see clearly again. Glaucoma happens when pressure builds up in the eye, damaging the main nerve. Eye drops or surgery can help.

If you have diabetes, you should have a complete eye exam every year. Finding and treating problems early may save your vision.

NIH: National Institute of Diabetes and Digestive and Kidney Diseases

  • Diabetes - eye care
  • Diabetes and eye disease
  • Diabetes eye exams
  • Fluorescein angiography
  • Intravitreal injection
  • Standard ophthalmic exam

[Read More]
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