Skip to main content

Table 1 Main sub-hierarchies of SNOMED CT. The metadata concepts sub-hierarchy (SNOMED CT Model Components) was not considered

From: Can SNOMED CT be squeezed without losing its shape?

Subhierarchy (Abbreviation) Concepts Distribution
Clinical Finding (CF) 100 893 33.57 %
Procedure (PR) 53 914 17.94 %
Organism (OR) 33 273 11.07 %
Body Structure (BS) 30 685 10.21 %
Substance (SU) 24 021 7.99 %
Pharmaceutical/Biologic Product 16 881 5.62 %
Qualifier Value (QV) 9 055 3.01 %
Observable Entity (OE) 8 307 2.76 %
Social Context (SO) 4 703 1.56 %
Physical Object (PO) 4 522 1.50 %
Situation with Explicit Context (SI) 3 695 1.23 %
Event (EV) 3 673 1.22 %
Environment or Geogr. Location (EG) 1 814 0.60 %
Specimen (SN) 1 447 0.48 %
Staging and Scales (ST) 1 309 0.44 %
Special concept (SP) 649 0.44 %
Record Artifact (RA) 227 0.22 %
Physical Force (PF) 171 0.08 %