H55
Non-billableNystagmus and other irregular eye movements
Nystagmus and other irregular eye movements
This is a header/category code. For billing purposes, use a more specific child code from the list below.
Coding Notes
Excludes 2
Conditions not included here, but the patient may have both
- •certain conditions originating in the perinatal periodP04-P96
- •certain infectious and parasitic diseasesA00-B99
- •complications of pregnancy, childbirth and the puerperiumO9A)O00
- •congenital malformations, deformations, and chromosomal abnormalitiesQ00-Q99
- •diabetes mellitus related eye conditions, , ,E09.3, E10.3, E11.3, E13.3
- •endocrine, nutritional and metabolic diseasesE00-E88
- •injury (trauma) of eye and orbitS05
- •injury, poisoning and certain other consequences of external causesS00-T88
- •neoplasmsC00-D49
- •symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classifiedR00-R94
- •syphilis related eye disorders, , ,A50.01, A50.3, A51.43, A52.71
Child Codes (2)
ICD-11 Equivalents(1)
ICD-11 Equivalents
View full mappingCorresponding ICD-11 codes from the WHO crosswalk mapping
Also Known As / Clinical Terms(2)
Frequently Asked Questions
What is the ICD-10 code for nystagmus and other irregular eye movements?
The ICD-10-CM code for nystagmus and other irregular eye movements is H55. The full clinical description is "Nystagmus and other irregular eye movements". H55 is a non-billable header code. Use a more specific child code for billing purposes.
What does ICD-10 code H55 mean?
ICD-10-CM code H55 represents “Nystagmus and other irregular eye movements”. It is classified under Chapter 7: Diseases of the Eye and Adnexa and is a non-billable header code. Use a more specific child code for billing purposes.
Is H55 a billable code?
No, H55 is a non-billable header code. You need to use one of its more specific child codes for billing. There are 2 child codes under H55.
What chapter is H55 in?
H55 is in Chapter 7: Diseases of the Eye and Adnexa (codes H00-H59).
What are the subcategories under H55?
H55 has 2 child codes, including: H55.0 (Nystagmus), H55.8 (Other irregular eye movements).
What are the UMLS CUIs for H55?
H55 is linked to 1 UMLS Concept Unique Identifier: C0339666. The UMLS (Unified Medical Language System) integrates multiple biomedical vocabularies maintained by the U.S. National Library of Medicine.
How does H55 relate to ICF functioning codes?
ICF (International Classification of Functioning, Disability and Health) codes describe how conditions like nystagmus and other irregular eye movements affect a person's functioning — body functions, activities, participation, and environmental factors. AutoICD provides ICF Core Sets for 12+ conditions and can map clinical text to ICF categories automatically. Browse the ICF directory to explore functioning codes.
What is the ICD-11 equivalent of H55?
H55 maps to the ICD-11 code: 9E1Z (Diseases of the visual system, unspecified).
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Includes SNOMED Clinical Terms® (SNOMED CT®) used by permission of SNOMED International. Includes content from the UMLS Metathesaurus, courtesy of the U.S. National Library of Medicine.