H55Header code — not billable
Nystagmus and other irregular eye movements
- Chapter
- 7. Diseases of the eye and adnexa
- Category
- H55
- Effective date
- October 1, 2026
Related codes in category H55
H55.0NystagmusH55.00Unspecified nystagmusYesH55.01Congenital nystagmusYesH55.02Latent nystagmusYesH55.03Visual deprivation nystagmusYesH55.04Dissociated nystagmusYesH55.09Other forms of nystagmusYesH55.8Other irregular eye movementsH55.81Deficient saccadic eye movementsYesH55.82Deficient smooth pursuit eye movementsYesH55.89Other irregular eye movementsYes
Frequently asked questions
What is ICD-10 code H55?
H55 is an ICD-10-CM diagnosis code for Nystagmus and other irregular eye movements.
Is H55 a billable code?
No. H55 is a category/header code, not billable on its own — use one of its more specific child codes instead.
What ICD-10-CM chapter is H55 in?
H55 falls under Chapter 7: Diseases of the eye and adnexa.
When did H55 become effective?
H55 has been effective since October 1, 2026, per the CMS/CDC ICD-10-CM annual release.
What other codes are related to H55?
H55 belongs to category H55, which includes 11 other codes — see the related codes list on this page.
ICD-10-CM data maintained by CDC/CMS (public domain). Always verify codes with authoritative sources before making coding or billing decisions.