The part of the SNOMED CT expression specifying the context of the focus concept.
Family history of asthma can be represented by an expression in which the 195967001 | Asthma| is nested within a context wrapper indicating family history.
281666001 |Family history of disorder (situation)| : ⬅︎ Context wrapper { 246090004 |Associated finding| = 195967001 |asthma| ⬅︎ Focus concept }
Addition information can be added in the context wrapper to specify the family member affected by asthma.
281666001 |Family history of disorder (situation)| : ⬅︎ Context wrapper { = , ⬅︎ ... = ⬅︎ Focus concept }