diff --git a/examples/patient_base.1.json b/examples/patient_base.1.json
index a6ff7f6..ab6dd2e 100644
--- a/examples/patient_base.1.json
+++ b/examples/patient_base.1.json
@@ -35,5 +35,14 @@
 	},
 	"patid": 1234,
 	"pat_unid": "1234",
-	"start_date": "1994-08-20"
-}
\ No newline at end of file
+	"start_date": "1994-08-20",
+	"careprograms": {
+		"principal": [
+			"dm",
+			"copd"
+		],
+		"auxiliary": [
+			"vvr"
+		]
+	}
+}
diff --git a/paths/patient_base.yaml b/paths/patient_base.yaml
index e781511..78836f5 100644
--- a/paths/patient_base.yaml
+++ b/paths/patient_base.yaml
@@ -63,6 +63,8 @@ get:
                 $ref: '../schemas/PatIdentity.yaml#/end_date'
               end_reason:
                 $ref: '../schemas/PatIdentity.yaml#/end_reason'
+              careprograms:
+                $ref: '../schemas/PatIdentity.yaml#/careprograms'
     '400':
       description: The request is invalid; for example, it doesn't contain the required `BSN` parameter.
     '401':
diff --git a/schemas/PatIdentity.yaml b/schemas/PatIdentity.yaml
index b437386..b70a7ed 100644
--- a/schemas/PatIdentity.yaml
+++ b/schemas/PatIdentity.yaml
@@ -232,3 +232,47 @@ end_reason:
     * `X` = Other
   type: string
   default: ""
+careprograms:
+  type: object
+  properties:
+    principal:
+      description: |-
+        A list of keys (strings) describing which care programs this patient
+        is actively receiving (they have been diagnosed or marked for inclusion in
+        the program, _and_ they are marked as receiving this care via the GP (not a specialist),
+        _and_ they are marked as being actively enrolled in a chronic care program for it).
+        
+        A program is considered _principal_ (in contrast to _auxiliary_) if no other program
+        the patient is actively participating in supersedes it (even partially).
+        
+        The list of possible care program values can change; we advise treating this value as
+        a plain string and not an enum hardcoded in your codebase.
+        
+        Note that careprogram inclusion depends on a GP practice's processes; if Zorg op Orde
+        has not been informed about these, no care programs will be reported.
+        
+        Currently, the set of possible values is
+          - dm
+          - copd
+          - astma
+          - hvz
+          - vvr
+          - ouderenzorg
+          - atriumfibrilleren
+          - hartfalen
+          - dermatoscopie
+          - fractuurpreventie
+          - ecg
+      type: array
+      items:
+        type: string
+      example: ["dm", "copd"]
+    auxiliary:
+      description: |-
+        Just like _principal_, except, all programs listed here are incompletely applied
+        because another program the patient participates in covers some or all of the care
+        implied by this program, and this program is treated as the auxiliary one.
+      type: array
+      items:
+        type: string
+      example: ["vvr"]