Simple Expression Constraints - Valid Expressions

Expression Constraint	Precoordinated	Postcoordinated
404684003 | Clinical finding|	404684003 | Clinical finding|	(none)
< 404684003 | Clinical finding|	64572001 | Disease|	404684003 | Clinical finding| : 363698007 | Finding site| = 80891009 | Heart structure|
<< 73211009 | Diabetes mellitus|	56265001 | Heart disease |46635009 | Diabetes mellitus type | 105401000119101 | Diabetes mellitus due to pancreatic injury|	73211009 | Diabetes mellitus| : 42752001 | Due to| = 61823004 | Injury of pancreas|
<! 404684003 | Clinical finding|	64572001 | Disease| 267038008 | Edema|	404684003 | Clinical finding| : 116676008 | Associated morphology| = 79654002 | Edema|\> 40541001 | Acute pulmonary edema|111273006 | Acute respiratory disease|64572001 | Disease| : 116676008 | Associated morphology| = 79654002 | Edema| , 363698007 | Finding site| = 39607008 | Lung structure|
>> 40541001 | Acute pulmonary edema|	40541001 | Acute pulmonary edema|	64572001 | Disease| : 263502005 | Clinical course| = 424124008 | Sudden onset AND/OR short duration| , { 116676008 | Associated morphology| = 40829002 | Acute edema| , 363698007 | Finding site| = 39607008 | Lung structure| }111273006 | Acute respiratory disease|404684003 | Clinical finding|138875005 | SNOMED CT concept|
>! 40541001 | Acute pulmonary edema|	111273006 | Acute respiratory disease| 19242006 | Pulmonary edema|	19829001 | Disorder of lung| : { 116676008 | Associated morphology| = 79654002 | Edema| , 363698007 | Finding site| = 39607008 | Lung structure| }
^ 700043003 | Example problem list concepts reference set|	394659003 | Acute coronary syndrome|	194828000 | Angina|29857009 | Chest pain|
*	138875005 | SNOMED CT concept| 404684003 | Clinical finding| : 363698007 | Finding site| = 80891009 | Heart structure|	404684003 | Clinical finding|71388002 | Procedure| : 405813007 | Procedure site - Direct| = 66754008 | Appendix structure|322236009 | Paracetamol 500mg tablet|373873005 | Pharmaceutical / biologic product| : { 127489000 | Has active ingredient| = 412031009 | Paracetamol or derivative| }

• Where necessary, these examples make some assumptions about the membership of the example reference sets.

• Please note that this makes the assumption that the given expression constraint is executed against a finite set of expressions that has been pre-classified (e.g. in an expression repository), and that after classification there are no intermediate expressions between this expression and 404684003 |Clinical finding|.

• Please note that this makes the assumption that the given expression constraint is executed against a finite set of expressions that has been pre-classified (e.g. in an expression repository), and that after classification there are no intermediate expressions between 40541001 |Acute pulmonary edema| and this expressio