68 lines
2.9 KiB
GLSL
68 lines
2.9 KiB
GLSL
// ============================================================
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// icd11ClusterExpression.fsh
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// Extension for ICD-11 postcoordinated cluster expressions
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// Context: Coding (broad — usable across all ICD-11 coded elements)
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// ============================================================
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Extension: ICD11ClusterExpression
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Id: icd11-cluster-expression
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Title: "ICD-11 Cluster Expression"
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Description: """
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Carries a postcoordinated ICD-11 cluster expression as a single string
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on a Coding element where the stem code alone is insufficient to fully
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represent the clinical concept.
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A cluster expression combines a stem code with one or more satellite
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codes using the & operator (combination) or / operator (specificity).
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Example: NC72.Z&XK8G&XJ7ZH&XJ7YM
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- NC72.Z — stem: Fracture of femur, unspecified
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- XK8G — satellite: laterality
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- XJ7ZH — satellite: fracture subtype
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- XJ7YM — satellite: fracture open or closed
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Usage rules:
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- SHALL only be present when the expression contains at least one
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satellite code joined by & or / operators.
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- Single stem codes SHALL be represented in Coding.code only and
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validated via OCL $validate-code. The cluster validator at
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https://icd11.dghs.gov.bd/cluster/validate explicitly rejects
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stem-only expressions.
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- The stem code in Coding.code SHALL match the leading stem code
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in this expression string.
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- Satellite codes in the cluster expression are exempt from the
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Diagnosis/Finding class restriction that applies to stem codes
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in Condition.code.
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- Cluster expressions SHALL be validated against the Bangladesh
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ICD-11 Cluster Validator at https://icd11.dghs.gov.bd/cluster/validate
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prior to submission to the HIE.
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Cluster validator endpoint:
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POST https://icd11.dghs.gov.bd/cluster/validate
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Body: { "expression": "NC72.Z&XK8G&XJ7ZH&XJ7YM" }
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This extension is not MustSupport and is not mandatory. It is present
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only when postcoordination is clinically required. Cluster expressions
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are typically sourced from the WHO Electronic Coding Tool (ECT) at the
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point of care.
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"""
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* ^url = "https://fhir.dghs.gov.bd/core/StructureDefinition/icd11-cluster-expression"
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* ^status = #active
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* ^experimental = false
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* ^publisher = "Directorate General of Health Services (DGHS), MoHFW, Bangladesh"
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* ^contact.name = "DGHS Health Informatics Unit"
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* ^contact.telecom.system = #url
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* ^contact.telecom.value = "https://dghs.gov.bd"
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* ^jurisdiction = urn:iso:std:iso:3166#BD "Bangladesh"
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* ^context[+].type = #element
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* ^context[=].expression = "Coding"
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* value[x] only string
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* valueString 1..1
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* valueString ^short = "ICD-11 postcoordinated cluster expression string"
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* valueString ^definition = """
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The full postcoordinated cluster expression, including the stem code and
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all satellite codes joined by & or / operators. Example:
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NC72.Z&XK8G&XJ7ZH&XJ7YM. The stem code in this string SHALL match
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Coding.code on the parent Coding element.
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""" |