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H18.221

Billable

Idiopathic corneal edema, right eye

This code does not map to an HCC category in any model (V28, V24, ESRD, RxHCC).

What This Code Means

Swelling of the cornea in the right eye that occurs without a known underlying cause.

Coding Tips

  • •Ensure documentation confirms idiopathic etiology (no secondary cause identified) to differentiate from H18.231
  • •Rule out contact lens use, trauma, or other secondary causes before assigning this code

Code Hierarchy

└H18Other disorders of cornea└H18.2Other and unspecified corneal edema└H18.22Idiopathic corneal edema└H18.221Idiopathic corneal edema, right eye
└H18.221Idiopathic corneal edema, right eye

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