diff --git a/src/modality-specific-files/magnetic-resonance-imaging-data.md b/src/modality-specific-files/magnetic-resonance-imaging-data.md
index ce58b6446a..e5a5923d40 100644
--- a/src/modality-specific-files/magnetic-resonance-imaging-data.md
+++ b/src/modality-specific-files/magnetic-resonance-imaging-data.md
@@ -166,7 +166,7 @@ A guide for using macros can be found at
    ])
 }}
 
-#### Tissue description
+### Tissue description
 
 <!-- This block generates a metadata table.
 These tables are defined in
@@ -178,6 +178,31 @@ A guide for using macros can be found at
 -->
 {{ MACROS___make_sidecar_table("mri.MRISample") }}
 
+### Deidentification information
+
+Describes the mechanism or method used to modify or remove metadata
+and/or pixel data to protect the patient or participant's identity.
+
+<!-- This block generates a metadata table.
+These tables are defined in
+  src/schema/rules/sidecars
+The definitions of the fields specified in these tables may be found in
+  src/schema/objects/metadata.yaml
+A guide for using macros can be found at
+ https://github.com/bids-standard/bids-specification/blob/master/macros_doc.md
+-->
+{{ MACROS___make_sidecar_table("mri.DeidentificationMethod") }}
+
+Each object in the `DeidentificationMethodCodeSequence` array includes the following RECOMMENDED keys:
+
+<!-- This block generates a table describing subfields within a metadata field.
+The definitions of these fields can be found in
+  src/schema/objects/metadata.yaml
+and a guide for using macros can be found at
+ https://github.com/bids-standard/bids-specification/blob/master/macros_doc.md
+-->
+{{ MACROS___make_subobject_table("metadata.DeidentificationMethodCodeSequence.items") }}
+
 ## Anatomy imaging data
 
 Anatomy MRI sequences measure static, structural features of the brain.
diff --git a/src/modality-specific-files/positron-emission-tomography.md b/src/modality-specific-files/positron-emission-tomography.md
index f15f3fad40..856789a887 100644
--- a/src/modality-specific-files/positron-emission-tomography.md
+++ b/src/modality-specific-files/positron-emission-tomography.md
@@ -230,6 +230,31 @@ A guide for using macros can be found at
 -->
 {{ MACROS___make_sidecar_table("pet.PETSample") }}
 
+#### Deidentification information
+
+Describes the mechanism or method used to modify or remove metadata
+and/or pixel data to protect the patient or participant's identity.
+
+<!-- This block generates a metadata table.
+These tables are defined in
+  src/schema/rules/sidecars
+The definitions of the fields specified in these tables may be found in
+  src/schema/objects/metadata.yaml
+A guide for using macros can be found at
+ https://github.com/bids-standard/bids-specification/blob/master/macros_doc.md
+-->
+{{ MACROS___make_sidecar_table("mri.DeidentificationMethod") }}
+
+Each object in the `DeidentificationMethodCodeSequence` array includes the following RECOMMENDED keys:
+
+<!-- This block generates a table describing subfields within a metadata field.
+The definitions of these fields can be found in
+  src/schema/objects/metadata.yaml
+and a guide for using macros can be found at
+ https://github.com/bids-standard/bids-specification/blob/master/macros_doc.md
+-->
+{{ MACROS___make_subobject_table("metadata.DeidentificationMethodCodeSequence.items") }}
+
 #### Task
 
 If the OPTIONAL [`task-<label>`](../appendices/entities.md#task) is used,
diff --git a/src/schema/objects/metadata.yaml b/src/schema/objects/metadata.yaml
index d99fcc599b..f2c3b25c74 100644
--- a/src/schema/objects/metadata.yaml
+++ b/src/schema/objects/metadata.yaml
@@ -591,6 +591,55 @@ DecayCorrectionFactor:
   type: array
   items:
     type: number
+DeidentificationMethod:
+  name: DeidentificationMethod
+  display_name: Deidentification Method
+  description: |
+    A description of the mechanism or method used to remove the Patient's identity.
+    Corresponds to DICOM Tag 0012, 0063 `De-identification Method`.
+  type: array
+  items:
+    type: string
+DeidentificationMethodCodeSequence:
+  name: DeidentificationMethodCodeSequence
+  display_name: Deidentification Method Code Sequence
+  description: |
+    A sequence of code objects describing the mechanism or method use to remove the Patient's identity.
+    Corresponds to DICOM Tag 0012, 0064 `De-identification Method Code Sequence`.
+  type: array
+  items:
+    type: object
+    recommended_fields:
+      - CodeValue
+      - CodeMeaning
+      - CodingSchemeDesignator
+      - CodingSchemeVersion
+    properties:
+      CodeValue:
+        name: CodeValue
+        type: string
+        description: |
+          An identifier that is unambiguous within the Coding Scheme
+          denoted by Coding Scheme Designator and Coding Scheme Version.
+          Corresponds to DICOM Tag 0008, 0100 `Code Value`.
+      CodeMeaning:
+        name: CodeMeaning
+        type: string
+        description: |
+          Text that has meaning to a human and conveys the meaning of the term
+          Corresponds to DICOM Tag 0008, 0104 `Code Meaning`.
+      CodingSchemeDesignator:
+        name: CodingSchemeDesignator
+        type: string
+        description: |
+          The identifier of the coding scheme in which the coded entry is defined.
+          Corresponds to DICOM Tag 0008, 0102 `Coding Scheme Designator`.
+      CodingSchemeVersion:
+        name: CodingSchemeVersion
+        type: string
+        description: |
+          An identifier of the version of the coding scheme if necessary to resolve ambiguity.
+          Corresponds to DICOM Tag 0008, 0103 `Coding Scheme Version`.
 DelayAfterTrigger:
   name: DelayAfterTrigger
   display_name: Delay After Trigger
diff --git a/src/schema/rules/sidecars/mri.yaml b/src/schema/rules/sidecars/mri.yaml
index d57a053bec..1edcdb157b 100644
--- a/src/schema/rules/sidecars/mri.yaml
+++ b/src/schema/rules/sidecars/mri.yaml
@@ -373,3 +373,14 @@ MRIInstitutionInformation:
     InstitutionalDepartmentName:
       level: recommended
       description_addendum: Corresponds to DICOM Tag 0008, 1040 `Institutional Department Name`.
+
+DeidentificationMethod:
+  selectors:
+    - intersects([modality], ["mri", "pet"])
+  fields:
+    DeidentificationMethod:
+      level: optional
+      description_addendum: Corresponds to DICOM Tag 0012, 0063 `De-identification Method`.
+    DeidentificationMethodCodeSequence:
+      level: optional
+      description_addendum: Corresponds to DICOM Tag 0012, 0064 `De-identification Method Code Sequence`.