diff --git a/input/fsh/BDConditionProfile.fsh b/input/fsh/BDConditionProfile.fsh
new file mode 100644
index 0000000..7dff9e4
--- /dev/null
+++ b/input/fsh/BDConditionProfile.fsh
@@ -0,0 +1,8 @@
+Profile: BDConditionProfile
+Parent: Condition
+Id: bd-condition
+Title: "ICD 11"
+Description: "Condition coded with ICD-11"
+
+* code 1..1 MS
+* code from http://id.who.int/icd/release/11/mms (preferred)
diff --git a/input/fsh/profile/BDEncounter.fsh b/input/fsh/profile/BDEncounter.fsh
index 2b4b470..ce6532a 100644
--- a/input/fsh/profile/BDEncounter.fsh
+++ b/input/fsh/profile/BDEncounter.fsh
@@ -26,6 +26,8 @@ Description: "Profile of Encounter Bangladesh Standard"
 * participant.period 1..1 MS
 
 * diagnosis 0..* MS
+* diagnosis.condition only Reference(BDConditionProfile)
+
 
 //* admission 0..* MS
 //* admission.dischargeDisposition 0..1 MS