ICD-10-CM Code R94.113

Abnormal oculomotor study

Version 2020 Billable Code No Valid Principal Dx

Valid for Submission

R94.113 is a billable code used to specify a medical diagnosis of abnormal oculomotor study. The code is valid for the year 2020 for the submission of HIPAA-covered transactions. The ICD-10-CM code R94.113 might also be used to specify conditions or terms like abnormal ocular motility, abnormal optokinetic response, evaluation of oculomotor system abnormal, heartbeat nystagmus, limited downward eye movement, limited eye movement, etc

According to ICD-10-CM guidelines this code should not to be used as a principal diagnosis code when a related definitive diagnosis has been established.

Short Description:Abnormal oculomotor study
Long Description:Abnormal oculomotor study

Index to Diseases and Injuries

The Index to Diseases and Injuries is an alphabetical listing of medical terms, with each term mapped to one or more ICD-10 code(s). The following references for the code R94.113 are found in the index:


The following clinical terms are approximate synonyms or lay terms that might be used to identify the correct diagnosis code:

  • Abnormal ocular motility
  • Abnormal optokinetic response
  • Evaluation of oculomotor system abnormal
  • Heartbeat nystagmus
  • Limited downward eye movement
  • Limited eye movement
  • Limited leftward eye movement
  • Limited rightward eye movement
  • Limited upward eye movement
  • O/E - eye does not move down
  • O/E - eye does not move left
  • O/E - eye does not move right
  • O/E - eye does not move up
  • Optokinetic response - finding
  • Rotary nystagmus

Diagnostic Related Groups

The ICD-10 code R94.113 is grouped in the following groups for version MS-DRG V37.0 What are Diagnostic Related Groups?
The Diagnostic Related Groups (DRGs) are a patient classification scheme which provides a means of relating the type of patients a hospital treats. The DRGs divides all possible principal diagnoses into mutually exclusive principal diagnosis areas referred to as Major Diagnostic Categories (MDC).
applicable from 10/01/2019 through 09/30/2020.


Convert R94.113 to ICD-9

  • 794.14 - Abn oculomotor studies

Code Classification

  • Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00–R99)
    • Abnormal findings on diagnostic imaging and in function studies, without diagnosis (R90-R94)
      • Abnormal results of function studies (R94)

Code History

  • FY 2016 - New Code, effective from 10/1/2015 through 9/30/2016
    (First year ICD-10-CM implemented into the HIPAA code set)
  • FY 2017 - No Change, effective from 10/1/2016 through 9/30/2017
  • FY 2018 - No Change, effective from 10/1/2017 through 9/30/2018
  • FY 2019 - No Change, effective from 10/1/2018 through 9/30/2019
  • FY 2020 - No Change, effective from 10/1/2019 through 9/30/2020

Information for Patients

Eye Movement Disorders

When you look at an object, you're using several muscles to move both eyes to focus on it. If you have a problem with the muscles, the eyes don't work properly.

There are many kinds of eye movement disorders. Two common ones are

  • Strabismus - a disorder in which the two eyes don't line up in the same direction. This results in "crossed eyes" or "walleye."
  • Nystagmus - fast, uncontrollable movements of the eyes, sometimes called "dancing eyes"

Some eye movement disorders are present at birth. Others develop over time and may be associated with other problems, such as injuries. Treatments include glasses, patches, eye muscle exercises, and surgery. There is no cure for some kinds of eye movement disorders, such as most kinds of nystagmus.

[Learn More]