---
title: "ICD-10-CM R94.111: Abnormal electroretinogram [ERG] | BillingBrief"
description: "ICD-10-CM code R94.111: Abnormal electroretinogram [ERG]. Category, related codes, and the official source, in plain English."
canonical: "https://billingbrief.com/icd10/r94.111/"
language: "en"
---

# R94.111 Abnormal electroretinogram \[ERG\]

ICD-10-CM · [CMS code reference](#source)

**Official ICD-10-CM description:** Abnormal electroretinogram \[ERG\]

## Coding notes

From the ICD-10-CM FY2027 (effective October 1, 2026) tabular list. Notes on a parent code or category apply here too.

### Also covers

-   Abnormal retinal function study

### Includes

-   abnormal results of radionuclide \[radioisotope\] uptake studies
-   abnormal results of scintigraphy
-   nonspecific abnormal findings on diagnostic imaging by computerized axial tomography \[CAT scan\]
-   nonspecific abnormal findings on diagnostic imaging by magnetic resonance imaging \[MRI\]\[NMR\]
-   nonspecific abnormal findings on diagnostic imaging by positron emission tomography \[PET scan\]
-   nonspecific abnormal findings on diagnostic imaging by thermography
-   nonspecific abnormal findings on diagnostic imaging by ultrasound \[echogram\]
-   nonspecific abnormal findings on diagnostic imaging by X-ray examination

### Excludes1

Not coded together with this code. The exception is when the two conditions are unrelated to each other.

-   abnormal findings on antenatal screening of mother (O28.-)
-   diagnostic abnormal findings classified elsewhere - see Alphabetical Index

## Related codes

-   [`R94.110` Abnormal electro-oculogram \[EOG\] ICD-10-CM](https://billingbrief.com/icd10/r94.110/)
-   [`R94.112` Abnormal visually evoked potential \[VEP\] ICD-10-CM](https://billingbrief.com/icd10/r94.112/)
-   [`R94.113` Abnormal oculomotor study ICD-10-CM](https://billingbrief.com/icd10/r94.113/)
-   [`R94.118` Abnormal results of other function studies of eye ICD-10-CM](https://billingbrief.com/icd10/r94.118/)
-   [`R94.120` Abnormal auditory function study ICD-10-CM](https://billingbrief.com/icd10/r94.120/)
-   [`R94.121` Abnormal vestibular function study ICD-10-CM](https://billingbrief.com/icd10/r94.121/)
-   [`R94.128` Abnormal results of other function studies of ear and other special senses ICD-10-CM](https://billingbrief.com/icd10/r94.128/)
-   [`R94.130` Abnormal response to nerve stimulation, unspecified ICD-10-CM](https://billingbrief.com/icd10/r94.130/)

## Common questions

### Is R94.111 a billable code?

Yes. R94.111 is a billable ICD-10-CM code in the ICD-10-CM FY2027 (effective October 1, 2026) code set.

## From the source

Official description from [CMS](https://www.cms.gov/medicare/coding-billing/icd-10-codes).
ICD-10-CM FY2027 (effective October 1, 2026).

Code set

ICD-10-CM

Category

R94 Abnormal results of function studies

Chapter

Symptoms, signs and abnormal clinical and laboratory findings

Billable

Yes

Educational reference only. Not medical, legal, or billing advice. Always check the current official code set and payer policy before you bill. [About BillingBrief and our sources](https://billingbrief.com/about/).