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Unified Medical Language System® (UMLS®)

Statistics - 2020AB Release

Official Counts:
Release version:    2020AB
Release format:    RRF
Concepts:    4,413,092
Number of concept names (AUIs):    15,938,388
Number of distinct concept names (SUIs):    13,560,262
Number of distinct normalized concept names (LUIs):    12,428,588
Number of sources (distinct source families by language):    156
Number of sources contributing concept names:    215
Number of languages contributing concept names:    25

Name Count by Language:

LanguageName Count% of Metathesaurus
ENG1128042870.78%
SPA15895819.97%
FRE4315272.71%
POR4238262.66%
JPN3320992.08%
DUT2938171.84%
RUS2930311.84%
ITA2519121.58%
GER2357361.48%
CZE1981151.24%
KOR1472170.92%
HUN1092710.69%
CHI819160.51%
NOR637970.4%
POL517780.32%
TUR515970.32%
EST311830.2%
SWE304390.19%
FIN254890.16%
SCR100350.06%
GRE22860.01%
LAV14050.01%
DAN7230%
BAQ6950%
HEB4850%

Name Count by Source Restriction Level (SRL):

SRLSource Count% of Sources
0796514649.97%
11478940.93%
2221560.14%
3451820028.35%
42069361.3%
9307805619.31%
0+4 817208251.27%

Count of Atoms by Suppressibility:

Suppressibility StatusName Count% of Metathesaurus
E86290.05%
O162358710.19%
N1350757284.75%
Y7986005.01%

Source Counts by Language (from MRSAB):

LanguageName count% of Metathesaurus
ENG14466.98%
GER83.72%
SPA83.72%
FRE83.72%
DUT73.26%
POR62.79%
ITA52.33%
KOR41.86%
RUS31.4%
CZE20.93%
JPN20.93%
SWE20.93%
* 20.93%
FIN20.93%
HUN20.93%
NOR20.93%
HEB10.47%
DAN10.47%
BAQ10.47%
TUR10.47%
GRE10.47%
LAV10.47%
EST10.47%
POL10.47%
SCR10.47%
CHI10.47%

*Note: 2 sources contribute relationships which have no associated language values.

Last Reviewed: October 29, 2020