...
Two consecutive 'less than' signs (i.e. "<<") indicates that the expression constraint is satisfied by all descendants of the specified concept plus the specified concept itself. The expression constraint below evaluates to the set of descendants of
| Scg expression |
|---|
73211009 |Diabetes mellitus| |
, plus the concept
| Scg expression |
|---|
73211009 |Diabetes mellitus| |
itself.
| Scg expression |
|---|
|
<< 73211009 |Diabetes mellitus| |
Using the long syntax, the above expression constraint may be represented as:
| Scg expression |
|---|
|
descendantOrSelfOf 73211009 |Diabetes mellitus| |
The descendantOrSelfOf function is primarily used for attribute values, which refer to a specific clinical value (e.g.
| Scg expression |
|---|
73211009 |Diabetes mellitus| |
,
| Scg expression |
|---|
73761001 |Colonoscopy| |
,
| Scg expression |
|---|
385055001 |Tablet dose form| |
), but any specialization of this value is also acceptable.
Child of
An exclamation mark directly followed by a A 'less than' sign directly followed by an exclamation mark (i.e. "<!") indicates indicates that the expression constraint is satisfied by the set of immediate children of the specified concept. The children of a concept are those concepts that are the source of a non-redundant
| Scg expression |
|---|
|
116680003|is a| |
relationship relationship whose target is the given concept. The expression constraint below, represented using the brief syntax, evaluates to the set of immediate children of the concept
| Scg expression |
|---|
404684003|Clinical finding| |
.
| Scg expression |
|---|
|
<! 404684003|Clinical finding| |
Using the long syntax, the above expression constraint may be represented as:
| Scg expression |
|---|
|
childOf 404684003|Clinical finding| |
...
Two consecutive 'greater than' signs (i.e. ">>") indicates that the expression constraint is satisfied by all ancestors of the specified concept plus the specified concept itself. The expression constraint below evaluates to the set of ancestors of
| Scg expression |
|---|
40541001 |Acute pulmonary edema| |
, plus the concept
| Scg expression |
|---|
40541001 |Acute pulmonary edema| |
.
| Scg expression |
|---|
|
>> 40541001|Acute pulmonary edema| |
Using the long syntax, the above expression constraint may be represented as:
| Scg expression |
|---|
|
ancestorOrSelfOf 40541001 |Acute pulmonary edema| |
Parent of
An exclamation mark directly followed by a A 'greater than' sign directly followed by an exclamation mark (i.e. ">!") indicates that the expression constraint is satisfied by the set of immediate parents of the specified concept. The parents of a concept are those concepts that are the target of a non-redundant |is a| relationship whose source is the given concept. The expression constraint below, represented using the brief syntax, evaluates to the set of immediate parents of the concept
| Scg expression |
|---|
40541001 |Acute pulmonary edema| |
.
| Scg expression |
|---|
|
>! 40541001 |Acute pulmonary edema| |
Using the long syntax, the above expression constraint may be represented as:
| Scg expression |
|---|
|
parentOf 40541001 |Acute pulmonary edema| |
...