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Unified Medical Language System® (UMLS®)

Statistics - 2022AA Release

Official Counts:
Release version:    2022AA
Release format:    RRF
Concepts:    4,553,796
Number of concept names (AUIs):    16,857,345
Number of distinct concept names (SUIs):    14,276,639
Number of distinct normalized concept names (LUIs):    13,111,508
Number of sources (distinct source families by language):    159
Number of sources contributing concept names:    222
Number of languages contributing concept names:    25

Name Count by Language:

LanguageName Count% of Metathesaurus
ENG1185583870.33%
SPA180674310.72%
FRE4438272.63%
POR4403122.61%
JPN3382652.01%
RUS3027971.8%
DUT2993441.78%
ITA2587241.53%
GER2555421.52%
CZE2123041.26%
KOR1502370.89%
HUN1122910.67%
CHI850990.5%
NOR637970.38%
POL576820.34%
TUR521630.31%
SWE497360.3%
EST315030.19%
FIN254890.15%
SCR100350.06%
GRE23090.01%
LAV14050.01%
DAN7230%
BAQ6950%
HEB4850%

Name Count by Source Restriction Level (SRL):

SRLSource Count% of Sources
0873281751.8%
11525430.9%
2221560.13%
3455818927.04%
42073851.23%
9318425518.89%
0+4 894020253.03%

Count of Atoms by Suppressibility:

Suppressibility StatusName Count% of Metathesaurus
E94800.06%
O176377010.46%
N1419880084.23%
Y8852955.25%

Source Counts by Language (from MRSAB):

LanguageName count% of Metathesaurus
ENG14866.67%
SPA104.5%
GER83.6%
FRE83.6%
DUT73.15%
POR62.7%
ITA52.25%
KOR41.8%
RUS31.35%
CZE20.9%
JPN20.9%
SWE20.9%
* 20.9%
FIN20.9%
HUN20.9%
POL20.9%
NOR20.9%
HEB10.45%
DAN10.45%
TUR10.45%
BAQ10.45%
EST10.45%
LAV10.45%
GRE10.45%
SCR10.45%
CHI10.45%

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


Last Reviewed: May 2, 2022