H55.0 – Nystagmus
ICD-10-CM 2027 diagnosis code · Other disorders of eye and adnexa
ICD-10-CM code
H55.0
- Code
H55.0(claims format:H550)- Description
- Nystagmus
- Billable
- No – use a more specific code below
- Valid for
- Dates of service October 1, 2026 – September 30, 2027 (FY2027)
- Chapter
- 7. Diseases of the eye and adnexa (H00-H59)
- Block
- H55-H57 Other disorders of eye and adnexa
- Parent codes
- H55
Billable codes under H55.0
H55.0 is a header code and cannot be used on claims. Choose the most specific code:
- H55.00 – Unspecified nystagmusBillable
- H55.01 – Congenital nystagmusBillable
- H55.02 – Latent nystagmusBillable
- H55.03 – Visual deprivation nystagmusBillable
- H55.04 – Dissociated nystagmusBillable
- H55.09 – Other forms of nystagmusBillable
Related codes in H55
Frequently asked questions
What is ICD-10 code H55.0?
H55.0 is the ICD-10-CM code for nystagmus, in the block H55-H57 (Other disorders of eye and adnexa).
Is H55.0 a billable code?
No. H55.0 is a header code with more specific child codes; report one of the billable codes listed above.
What category does H55.0 belong to?
It belongs to category H55 – Nystagmus and other irregular eye movements.
Source: CDC/NCHS ICD-10-CM FY2027 code files, tabular list and index. Reference only – code assignment must follow the official ICD-10-CM guidelines and documentation in the medical record.