H18.542
BillableLattice corneal dystrophy, left eye
This code does not map to an HCC category in any model (V28, V24, ESRD, RxHCC).
What This Code Means
Lattice corneal dystrophy is a genetic eye condition where abnormal protein deposits form a lattice-like pattern in the cornea (the clear front part of the eye), affecting the left eye. This can cause vision problems, corneal clouding, and recurrent eye surface erosions over time.
Coding Tips
- •Verify laterality is documented as left eye (H18.542) versus right eye (H18.541) or bilateral (H18.543) to ensure accurate code selection
- •This is an inherited dystrophy; confirm the diagnosis is specifically lattice type rather than other corneal dystrophies (granular, macular, etc.) as each has distinct codes
Code Hierarchy
└H18Other disorders of cornea└H18.5Hereditary corneal dystrophies└H18.54Lattice corneal dystrophy└H18.542Lattice corneal dystrophy, left eye
└H18.542Lattice corneal dystrophy, left eye