H55 is the ICD-10 code for Nystagmus and other irregular eye movements. It is a three-character category that is not subdivided further. It belongs to the block H55–H59 (Other disorders of eye and adnexa) in Chapter VII, Diseases of the eye and adnexa.
- Code type
- Category (3 characters)
- Chapter
- VII · H00–H59
- Classification
- WHO ICD-10, 2019 version
What H55 includes
Conditions and terms that are coded here.
- Nystagmus:
- NOS
- congenital
- deprivation
- dissociated
- latent
H55 in national editions
Countries report with their own edition of ICD-10. Most keep the WHO code and add more specific codes beneath it.
H55Nystagmus och andra oregelbundna ögonrörelser
- H55.9Nystagmus och andra oregelbundna ögonrörelser
H55Nystagmus eller andre irregulære øyebevegelser
DH55Nystagmus og andre abnorme øjenbevægelser
- DH559Nystagmus UNS
H55Silmävärve tai muu säännötön silmänliike
H55Nystagmus und sonstige abnorme Augenbewegungen
H55Nystagmus et autres anomalies des mouvements oculaires
H55nystagmus en andere onregelmatige oogbewegingen
Listed through more specific codes:
- H55.00Unspecified nystagmus
- H55.01Congenital nystagmus
- H55.02Latent nystagmus
- H55.03Visual deprivation nystagmus
- H55.04Dissociated nystagmus
- H55.09Other forms of nystagmus
- H55.81Deficient saccadic eye movements
- H55.82Deficient smooth pursuit eye movements
- and 1 more national subcodes
Based on the World Health Organization’s International Statistical Classification of Diseases and Related Health Problems, 10th revision (ICD-10), 2019 version, and the national editions published by each country’s health authority. This page is a reference, not coding advice; follow your national coding rules when you report.
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