H18.559
BillableMacular corneal dystrophy, unspecified eye
This code does not map to an HCC category in any model (V28, V24, ESRD, RxHCC).
What This Code Means
Macular corneal dystrophy is a genetic eye condition where cloudy deposits form in the cornea (the clear front part of the eye), affecting vision. This code is used when the condition is present but the specific eye affected is not documented.
Coding Tips
- •Always attempt to determine which eye is affected (right, left, or bilateral) and use the more specific codes (H18.551, H18.552, or H18.553) rather than the unspecified code when documentation permits
- •This is a hereditary condition often diagnosed through genetic testing and slit-lamp examination; ensure documentation clearly supports the diagnosis before coding
Code Hierarchy
└H18Other disorders of cornea└H18.5Hereditary corneal dystrophies└H18.55Macular corneal dystrophy└H18.559Macular corneal dystrophy, unspecified eye
└H18.559Macular corneal dystrophy, unspecified eye