diff --git a/CHANGELOG.md b/CHANGELOG.md
index 30fda8c0b68e..201751c271b2 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -9,6 +9,8 @@
 - Added optional virtualized line rendering to `EuiCodeBlock` ([#4952](https://github.com/elastic/eui/pull/4952))
 - Added `current` as a `status` of `EuiHorizontalStep` ([#4911](https://github.com/elastic/eui/pull/4911))
 - Exported `onChange` type for `EuiSearchBar` ([#4968](https://github.com/elastic/eui/pull/4968))
+- Added `warnOnce` service ([#4984](https://github.com/elastic/eui/pull/4984))
+- Added a console warning for the deprecation of `EuiCodeEditor` ([#4984](https://github.com/elastic/eui/pull/4984))
 
 **Bug fixes**
 
diff --git a/src-docs/src/views/code/code_example.js b/src-docs/src/views/code/code_example.js
index 0e93e848dba0..b69df50309b1 100644
--- a/src-docs/src/views/code/code_example.js
+++ b/src-docs/src/views/code/code_example.js
@@ -4,10 +4,12 @@ import { Link } from 'react-router-dom';
 import { GuideSectionTypes } from '../../components';
 
 import {
+  EuiCallOut,
   EuiCode,
   EuiCodeBlock,
   EuiLink,
   EuiText,
+  EuiSpacer,
 } from '../../../../src/components';
 import { codeBlockConfig, codeConfig } from './playground';
 
@@ -39,6 +41,21 @@ export const CodeExample = {
   title: 'Code',
   intro: (
     <>
+      <EuiCallOut>
+        <p>
+          <strong>EuiCode</strong> and <strong>EuiCodeBlock</strong> are
+          intended to render static lines or blocks of code in{' '}
+          <strong>read-only</strong> contexts. If you need capabilities to edit,
+          or want to print long code (e.g., printing JSON from an API), we
+          recommend installing a version of Monaco. If you are building within
+          the Kibana platform, you can use their{' '}
+          <EuiLink href="https://github.com/elastic/kibana/tree/master/src/plugins/kibana_react/public/code_editor">
+            <strong>CodeEditor</strong>
+          </EuiLink>
+          .
+        </p>
+      </EuiCallOut>
+      <EuiSpacer />
       <EuiText>
         <p>
           The <strong>EuiCode</strong> and <strong>EuiCodeBlock</strong>{' '}
diff --git a/src/components/code_editor/code_editor.tsx b/src/components/code_editor/code_editor.tsx
index 9da2bd5219b9..2438271b7916 100644
--- a/src/components/code_editor/code_editor.tsx
+++ b/src/components/code_editor/code_editor.tsx
@@ -11,7 +11,7 @@ import classNames from 'classnames';
 import AceEditor, { IAceEditorProps } from 'react-ace';
 
 import { keysOf } from '../common';
-import { htmlIdGenerator, keys } from '../../services';
+import { htmlIdGenerator, keys, warnOnce } from '../../services';
 import { EuiI18n } from '../i18n';
 
 const DEFAULT_MODE = 'text';
@@ -79,6 +79,15 @@ export class EuiCodeEditor extends Component<
     name: htmlIdGenerator()(),
   };
 
+  constructor(props: EuiCodeEditorProps) {
+    super(props);
+    warnOnce(
+      'EuiCodeEditor',
+      `[EUI] - DEPRECATION: \`EuiCodeEditor\` is deprecated and will be removed in a future release.
+See https://ela.st/euicodeeditor for migration options.`
+    );
+  }
+
   idGenerator = htmlIdGenerator();
   aceEditor: AceEditor | null = null;
   editorHint: HTMLButtonElement | null = null;
diff --git a/src/services/console/index.ts b/src/services/console/index.ts
new file mode 100644
index 000000000000..bc62773d0e0a
--- /dev/null
+++ b/src/services/console/index.ts
@@ -0,0 +1,9 @@
+/*
+ * Copyright Elasticsearch B.V. and/or licensed to Elasticsearch B.V. under one
+ * or more contributor license agreements. Licensed under the Elastic License
+ * 2.0 and the Server Side Public License, v 1; you may not use this file except
+ * in compliance with, at your election, the Elastic License 2.0 or the Server
+ * Side Public License, v 1.
+ */
+
+export * from './warn_once';
diff --git a/src/services/console/warn_once.test.ts b/src/services/console/warn_once.test.ts
new file mode 100644
index 000000000000..5ecff2cf11e1
--- /dev/null
+++ b/src/services/console/warn_once.test.ts
@@ -0,0 +1,28 @@
+/*
+ * Copyright Elasticsearch B.V. and/or licensed to Elasticsearch B.V. under one
+ * or more contributor license agreements. Licensed under the Elastic License
+ * 2.0 and the Server Side Public License, v 1; you may not use this file except
+ * in compliance with, at your election, the Elastic License 2.0 or the Server
+ * Side Public License, v 1.
+ */
+
+import { warnOnce } from './warn_once';
+
+describe('warnOnce', () => {
+  let warn: jest.SpyInstance;
+  beforeAll(() => {
+    warn = jest.spyOn(console, 'warn').mockImplementation(() => {});
+  });
+  it('should warn only once per id', () => {
+    warnOnce('1', 'message');
+    warnOnce('1', 'message');
+    expect(warn).toBeCalledTimes(1);
+    warnOnce('2', 'message');
+    expect(warn).toBeCalledTimes(2);
+    warnOnce('2', 'message');
+    expect(warn).toBeCalledTimes(2);
+    warnOnce('1', 'message');
+    expect(warn).toBeCalledTimes(2);
+  });
+  afterAll(() => warn.mockRestore());
+});
diff --git a/src/services/console/warn_once.ts b/src/services/console/warn_once.ts
new file mode 100644
index 000000000000..c3d58dc6a7f9
--- /dev/null
+++ b/src/services/console/warn_once.ts
@@ -0,0 +1,16 @@
+/*
+ * Copyright Elasticsearch B.V. and/or licensed to Elasticsearch B.V. under one
+ * or more contributor license agreements. Licensed under the Elastic License
+ * 2.0 and the Server Side Public License, v 1; you may not use this file except
+ * in compliance with, at your election, the Elastic License 2.0 or the Server
+ * Side Public License, v 1.
+ */
+
+const log: { [id: string]: boolean } = {};
+
+export const warnOnce = (id: string, message: string) => {
+  if (!log[id] && console && console.warn) {
+    log[id] = true;
+    console.warn(message);
+  }
+};
diff --git a/src/services/index.ts b/src/services/index.ts
index e8a1df92c146..d358f4fd9a65 100644
--- a/src/services/index.ts
+++ b/src/services/index.ts
@@ -66,6 +66,8 @@ export {
 
 export { useColorPickerState, useColorStopsState } from './color_picker';
 
+export * from './console';
+
 export { copyToClipboard } from './copy_to_clipboard';
 
 export {