E13.36

HCC Category Mapping

What This Code Means

A type of diabetes (not type 1 or type 2) that causes clouding of the eye lens, leading to vision problems or blindness.

Coding Tips

• •Verify the diabetes type is documented as 'other specified' rather than type 1 or type 2
• •Ensure the cataract is specifically documented as diabetic-related, not from other causes

Clinical Significance

E13.36 identifies diabetic cataract in patients with other specified (secondary) diabetes mellitus. Diabetic cataracts develop due to chronic hyperglycemia-induced osmotic changes in the lens, leading to swelling, opacity, and progressive vision impairment. These cataracts can occur at younger ages and progress more rapidly than age-related cataracts.

Documentation Requirements

• ✓The provider must document the secondary diabetes type with its underlying cause and confirm that the cataract is directly attributed to the diabetes.
• ✓Ophthalmology examination findings including lens opacity characteristics should be documented.
• ✓Age-related cataracts in a diabetic patient should not automatically be coded as diabetic cataracts.

Commonly Confused Codes