Prepare 0.3.0: ICD-11 MMS integration

input/fsh/profile/BDConditionProfile.fsh

@@ -0,0 +1,65 @@
+// ============================================================
+// BDConditionProfile.fsh
+// BD-Core Condition profile with mandatory ICD-11 MMS stem slice
+// Binding: Diagnosis and Finding class concepts only
+// Runtime enforcement via OCL ValueSet $validate-code
+// ============================================================
+
+Profile: BDConditionProfile
+Parent: Condition
+Id: bd-condition
+Title: "BD Core Condition Profile (ICD-11)"
+Description: """
+Condition resource coded with ICD-11 MMS, restricted to Diagnosis and
+Finding class concepts. Defined in the Bangladesh Core FHIR Implementation
+Guide (BD-Core-FHIR-IG) published by DGHS/MoHFW.
+"""
+
+* code 1..1 MS
+* code from bd-condition-icd11-diagnosis-valueset (preferred)
+* code ^comment = """
+Condition.code SHALL contain at least one coding conforming to the
+coding[stem] slice with system = http://id.who.int/icd/release/11/mms.
+
+Stem code rules:
+  - The stem code SHALL be a Diagnosis or Finding class ICD-11 MMS concept.
+  - This restriction is enforced at runtime via OCL ValueSet $validate-code
+    against the Bangladesh ICD-11 MMS Condition ValueSet.
+  - Stem-only codes SHALL be validated via OCL $validate-code.
+  - Substance, Organism, Device, Anatomy, and Misc class concepts SHALL NOT
+    appear as standalone stem codes in Condition.code.
+
+Cluster expression rules:
+  - When a concept requires postcoordination, the full cluster expression
+    SHALL be carried in the icd11-cluster-expression extension on coding[stem].
+  - The icd11-cluster-expression extension SHALL only be present when the
+    expression contains at least one satellite code joined by & or / operators.
+  - Satellite codes in the cluster expression are exempt from the
+    Diagnosis/Finding class restriction.
+  - Cluster expressions SHALL be validated against the Bangladesh ICD-11
+    Cluster Validator at https://icd11.dghs.gov.bd/cluster/validate
+    prior to submission to the HIE.
+
+Additional local codings are permitted alongside the mandatory ICD-11 stem
+(slicing is open). Cluster expressions are typically sourced from the WHO
+Electronic Coding Tool (ECT) at the point of care.
+"""
+
+* code.coding ^slicing.discriminator.type = #value
+* code.coding ^slicing.discriminator.path = "system"
+* code.coding ^slicing.rules = #open
+* code.coding ^slicing.description = "Slice requiring exactly one ICD-11 MMS stem code. Additional local codings permitted."
+
+* code.coding contains stem 1..1
+* code.coding[stem] ^short = "Mandatory ICD-11 MMS stem code"
+* code.coding[stem] ^definition = """
+Exactly one ICD-11 MMS stem code is required. The stem code SHALL be a
+Diagnosis or Finding class concept. When the condition requires
+postcoordination, the full cluster expression is carried in the
+icd11-cluster-expression extension on this coding element.
+"""
+* code.coding[stem].system 1..1
+* code.coding[stem].system = "http://id.who.int/icd/release/11/mms" (exactly)
+* code.coding[stem].code 1..1
+* code.coding[stem].extension contains
+    https://fhir.dghs.gov.bd/core/StructureDefinition/icd11-cluster-expression named clusterExpression 0..1