ICD-10-CM 2027
ICD-10 code for latent nystagmus
From the official ICD-10-CM alphabetic index entry “Nystagmus › latent”. Page updated September 29, 2026.
About coding latent nystagmus
The ICD-10-CM code for latent nystagmus is H55.02 (Latent nystagmus).
Within H55.0 (nystagmus), H55.02 is specifically for latent nystagmus. Related codes cover unspecified nystagmus (H55.00), congenital nystagmus (H55.01), visual deprivation nystagmus (H55.03), dissociated nystagmus (H55.04) and other forms of nystagmus (H55.09).
It is not a CC or MCC, so as a secondary diagnosis it doesn't change the MS-DRG severity level.
In MS-DRG v44.0, it is part of the grouping logic for DRG 123 (Neurological Eye Disorders, relative weight 0.822), in MDC 02 (Diseases and Disorders of the Eye), as a principal or secondary diagnosis. The DRG a claim lands in depends on the principal diagnosis, procedures and any CC/MCC secondary diagnoses.
Common questions about latent nystagmus ICD-10 codes
What is the ICD-10 code for latent nystagmus?
- H55.02 — Latent nystagmus.
Is H55.02 billable?
- Yes. H55.02 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can H55.02 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict H55.02 as a principal diagnosis.
Is H55.02 a CC or MCC?
- No. H55.02 is neither a CC nor an MCC under MS-DRG v44.0.