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ICD-10-CM Codes
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H00-H59
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H55-H57
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H55-
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2023 ICD-10-CM Diagnosis Code H55.00
2023 ICD-10-CM Diagnosis Code H55.00
Unspecified nystagmus
2016 2017 2018 2019 2020 2021 2022 2023 Billable/Specific Code
- H55.00 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
- The 2023 edition of ICD-10-CM H55.00 became effective on October 1, 2022.
- This is the American ICD-10-CM version of H55.00 - other international versions of ICD-10 H55.00 may differ.
The following code(s) above
H55.00 contain annotation back-references
Annotation Back-References
In this context, annotation back-references refer to codes that contain:
- Applicable To annotations, or
- Code Also annotations, or
- Code First annotations, or
- Excludes1 annotations, or
- Excludes2 annotations, or
- Includes annotations, or
- Note annotations, or
- Use Additional annotations
that may be applicable to
H55.00:
- Nystagmus
- Nystagmus (eye condition)
Clinical Information
- A disorder characterized by involuntary movements of the eyeballs.
- Eye movement reflex stabilizing the retinal image of a visual stimulus to compensate for head or stimulus movement. Also, eye movement defects resulting from neurological, muscular, or genetic disorders.
- Involuntary movements of the eye that are divided into two types, jerk and pendular. Jerk nystagmus has a slow phase in one direction followed by a corrective fast phase in the opposite direction, and is usually caused by central or peripheral vestibular dysfunction. Pendular nystagmus features oscillations that are of equal velocity in both directions and this condition is often associated with visual loss early in life. (Adams et al., Principles of Neurology, 6th ed, p272)
- Involuntary movements of the eyeballs. The presence or absence of nystagmus is often used in the diagnosis of a variety of neurological and visual disorders.
- Involuntary, rapid, rhythmic movement of the eyeball
- Involuntary, rapid, rhythmic movement of the eyeball.
ICD-10-CM H55.00 is grouped within Diagnostic Related Group(s) (MS-DRG v40.0):
- 123 Neurological eye disorders
Convert H55.00 to ICD-9-CM
Code History
- 2016 (effective 10/1/2015): New code (first year of non-draft ICD-10-CM)
- 2017 (effective 10/1/2016): No change
- 2018 (effective 10/1/2017): No change
- 2019 (effective 10/1/2018): No change
- 2020 (effective 10/1/2019): No change
- 2021 (effective 10/1/2020): No change
- 2022 (effective 10/1/2021): No change
- 2023 (effective 10/1/2022): No change
ICD-10-CM Codes Adjacent To H55.00
H54.52A1 Low vision left eye category 1, normal vision right eye
H54.52A2 Low vision left eye category 2, normal vision right eye
H54.6 Unqualified visual loss, one eye
H54.61 Unqualified visual loss, right eye, normal vision left eye
H54.62 Unqualified visual loss, left eye, normal vision right eye
H54.7 Unspecified visual loss
H54.8 Legal blindness, as defined in USA
H55 Nystagmus and other irregular eye movements
H55.00
Unspecified nystagmus
H55.03 Visual deprivation nystagmus
H55.09 Other forms of nystagmus
H55.8 Other irregular eye movements
H55.81 Deficient saccadic eye movements
H55.82 Deficient smooth pursuit eye movements
H55.89 Other irregular eye movements
H57 Other disorders of eye and adnexa
Reimbursement claims with a date of service on or after October 1, 2015 require the use of ICD-10-CM codes.
