H55: Nystagmus and other irregular eye movements
Codes under H55 (Nystagmus and other irregular eye movements). A ✓ marks a billable (fully specified) code; category codes without a ✓ are not billable on their own.
| Code | Description | Billable |
|---|---|---|
| H55.0 | Nystagmus | — |
| H55.0 | Nystagmus | — |
| H55.00 | Unspecified nystagmus | ✓ |
| H55.00 | Unspecified nystagmus | ✓ |
| H55.01 | Congenital nystagmus | ✓ |
| H55.01 | Congenital nystagmus | ✓ |
| H55.02 | Latent nystagmus | ✓ |
| H55.02 | Latent nystagmus | ✓ |
| H55.03 | Visual deprivation nystagmus | ✓ |
| H55.03 | Visual deprivation nystagmus | ✓ |
| H55.04 | Dissociated nystagmus | ✓ |
| H55.04 | Dissociated nystagmus | ✓ |
| H55.8 | Other irregular eye movements | — |
| H55.8 | Other irregular eye movements | — |
| H55.09 | Other forms of nystagmus | ✓ |
| H55.09 | Other forms of nystagmus | ✓ |
| H55.81 | Deficient saccadic eye movements | ✓ |
| H55.81 | Deficient saccadic eye movements | ✓ |
| H55.82 | Deficient smooth pursuit eye movements | ✓ |
| H55.82 | Deficient smooth pursuit eye movements | ✓ |
| H55.89 | Other irregular eye movements | ✓ |
| H55.89 | Other irregular eye movements | ✓ |
Frequently asked questions
What is ICD-10-CM code H55?
H55 is an ICD-10-CM category covering Nystagmus and other irregular eye movements. It contains 22 more specific diagnosis codes, 18 of which are billable.
Is H55 a billable code?
No — H55 is a category header and isn't billable on its own. Code to the highest level of specificity using one of its subcodes (for example H55.0 — Nystagmus). 18 of the 22 codes under H55 are billable.
What codes fall under H55?
H55 includes H55.0, H55.0, H55.00, H55.00, H55.01, plus 17 more. See the full list with descriptions and billable status above.
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Informational only, not coding or medical advice. Verify against the official ICD-10-CM (FY2026) and your payer's guidelines.
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