ICD-10-CM 2027
ICD-10 code for oculomotor study abnormal
From the official ICD-10-CM alphabetic index entry “Abnormal, abnormality, abnormalities › oculomotor study”. Page updated September 29, 2026.
About coding oculomotor study abnormal
The ICD-10-CM code for oculomotor study abnormal is R94.113 (Abnormal oculomotor study).
Within R94.11 (abnormal results of function studies of eye), R94.113 is specifically for abnormal oculomotor study. Related codes cover electro-oculogram [EOG] (R94.110), electroretinogram [ERG] (R94.111), visually evoked potential [VEP] (R94.112) and results of other function studies of eye (R94.118).
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.
Common questions about oculomotor study abnormal ICD-10 codes
What is the ICD-10 code for oculomotor study abnormal?
- R94.113 — Abnormal oculomotor study.
Is R94.113 billable?
- Yes. R94.113 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can R94.113 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict R94.113 as a principal diagnosis.
Is R94.113 a CC or MCC?
- No. R94.113 is neither a CC nor an MCC under MS-DRG v44.0.