H55.09
BillableOther forms of nystagmus
This code does not map to an HCC category in any model (V28, V24, ESRD, RxHCC).
What This Code Means
A person has involuntary eye movements of a type not specifically classified elsewhere, such as periodic alternating nystagmus or other variants.
Coding Tips
- •Use this code only when the nystagmus type does not fit into the more specific categories (congenital, latent, dissociated)
- •Document the specific characteristics of the nystagmus pattern observed to support medical necessity
Code Hierarchy
└H55Nystagmus and other irregular eye movements└H55.0Nystagmus└H55.09Other forms of nystagmus
└H55.09Other forms of nystagmus