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