H28 Cataract in diseases classified elsewhere

Billable

Block: Disorders of lens (H25-H28)

Excludes 1 (cannot be coded together)

  • cataract in diabetes mellitus (E08.36, E09.36, E10.36, E11.36, E13.36)

Code First

  • underlying disease, such as:
  • hypoparathyroidism (E20.-)
  • myotonia (G71.1-)
  • myxedema (E03.-)
  • protein-calorie malnutrition (E40-E46)
This category is a complete, billable diagnosis code.

No additional specificity is required — submit H28 directly on claims and documentation without a subcode extension.

Last reviewed: September 2026