H55.00
✓ Billable
Unspecified nystagmus
ICD-10-CM · FY2026 · Diseases of the Eye and Adnexa
Code
H55.00
System
ICD-10-CM
Billable
Yes — valid for submission
Effective
FY2026
Chapter
Diseases of the Eye and Adnexa
Source
CMS / CDC NCHS
⚠ Verify before billing. Confirm against the current CMS/NCHS ICD-10-CM files and your payer's rules before claims submission.
Frequently asked questions
What is ICD-10 code H55.00?
ICD-10-CM code H55.00 represents Unspecified nystagmus. It is a billable diagnosis code in the Diseases of the Eye and Adnexa chapter, effective October 1, 2025 – September 30, 2026.
Is H55.00 billable?
Yes. H55.00 is a valid billable ICD-10-CM code for insurance claims and clinical documentation.
What chapter is H55.00 in?
H55.00 belongs to the Diseases of the Eye and Adnexa chapter (H00–H59) of ICD-10-CM.
Related codes in the H55 category
H55
Nystagmus and other irregular eye movements
Non-billable
H55.0
Nystagmus
Non-billable
H55.8
Other irregular eye movements
Non-billable
H55.01
Congenital nystagmus
Billable
H55.02
Latent nystagmus
Billable
H55.03
Visual deprivation nystagmus
Billable
H55.04
Dissociated nystagmus
Billable
H55.09
Other forms of nystagmus
Billable
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