ICD-10-CM 2027
ICD-10 code for eye movements irregular
From the official ICD-10-CM alphabetic index entry “Irregular, irregularity › eye movements”. Page updated September 29, 2026.
About coding eye movements irregular
The ICD-10-CM code for eye movements irregular is H55.89 (Other irregular eye movements). The official index lists 2 more specific codes, so check the documentation for details such as type, cause, site or severity before settling on H55.89.
Within H55.8, choose H55.89 (Other irregular eye movements) only when documentation doesn't support a more specific option: Deficient saccadic eye movements (H55.81) and Deficient smooth pursuit eye movements (H55.82).
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 124 (Other Disorders of the Eye with MCC or Thrombolytic Agent, relative weight 1.2471) and DRG 125 (Other Disorders of the Eye without MCC, relative weight 0.7702), 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.
More specific eye movements irregular codes (official index)
Common questions about eye movements irregular ICD-10 codes
What is the ICD-10 code for eye movements irregular?
- H55.89 — Other irregular eye movements. More specific codes apply when the documentation supports them: H55.81, H55.82.
Is H55.89 billable?
- Yes. H55.89 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can H55.89 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict H55.89 as a principal diagnosis.
Is H55.89 a CC or MCC?
- No. H55.89 is neither a CC nor an MCC under MS-DRG v44.0.