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Unified Medical Language System® (UMLS®)

2015AB UMLS National Drug File - Reference Terminology Source Information

Term Type Counts

Term Type Expanded Form Count
PT Designated preferred name 43574
FN Full form of descriptor 43566
SY Designated synonym 34286
AB Abbreviation in any source vocabulary 13825
HT Hierarchical term 8
MTH_RXN_RHT RxNorm Created reference hierarchy term 1

Attribute Counts

Attribute Name Expanded Form Count
NDFRT_KIND NDFRT kind 43574
NUI NDFRT numerical unique identifier 43574
NDF_UNITS NDF units 39679
VA_IEN VA individual entry number 38875
STRENGTH NDF strength 38573
VANDF_RECORD Concatenated triple of VANDF file number, VANDF file IEN, VANDF file record status 27719
VUID VHA unique identifier assigned to the product 25313
LEVEL RXNORM: Specifies the type of drug concepts - Values can be "Ingredient", "VA Class", or "VA Product"; ICF: hierarchical level number 25313
NF_NAME National Formulary Name 17382
DCSA Controlled Substance Act designation code (e.g. 0,2,3n) 17362
MESH_NAME MeSH name 14892
MESH_DUI The MeSH descriptor unique identifier to which the given NDFRT term maps 14892
MESH_UI The MeSH Unique Identifier to which the given NDFRT term maps 14829
MESH_DEFINITION MeSH definition for MeSH main heading 12967
SNOMED_CID SNOMED-CT concept ID mapping for NDFRT disease name term 5026
FDA_UNII_CODE FDA UNII Code 4640
SNOMED_PARENT SNOMED PARENT 659
VAC VA Class - the code of an NDF/HT drug class name (e.g. AM110) 486
DEFINITION Definition 31
SNOMED_CHILD SNOMED CHILD 9

Relationship Counts

Relation Name/Additional Label (if present) Expanded Form Count
RO/may_be_treated_by has relationship other than synonymous, narrower, or broader 51488
RO/may_treat has relationship other than synonymous, narrower, or broader 51488
CHD/ has child relationship in a Metathesaurus source vocabulary 43574
PAR/ has parent relationship in a Metathesaurus source vocabulary 43574
RO/contraindicated_with_disease has relationship other than synonymous, narrower, or broader 38890
RO/has_contraindicated_drug has relationship other than synonymous, narrower, or broader 38890
RO/product_component_of has relationship other than synonymous, narrower, or broader 38852
RO/has_product_component has relationship other than synonymous, narrower, or broader 38852
RO/has_physiologic_effect has relationship other than synonymous, narrower, or broader 27357
RO/physiologic_effect_of has relationship other than synonymous, narrower, or broader 27357
RO/has_ingredient has relationship other than synonymous, narrower, or broader 24776
RO/ingredient_of has relationship other than synonymous, narrower, or broader 24776
RO/mechanism_of_action_of has relationship other than synonymous, narrower, or broader 15795
RO/has_mechanism_of_action has relationship other than synonymous, narrower, or broader 15795
SY/has_print_name source asserted synonymy. 13825
SY/print_name_of source asserted synonymy. 13825
RO/dose_form_of has relationship other than synonymous, narrower, or broader 13496
RO/has_dose_form has relationship other than synonymous, narrower, or broader 13496
RO/may_prevent has relationship other than synonymous, narrower, or broader 6317
RO/may_be_prevented_by has relationship other than synonymous, narrower, or broader 6317
RO/has_contraindicating_class has relationship other than synonymous, narrower, or broader 2280
RO/contraindicating_class_of has relationship other than synonymous, narrower, or broader 2280
RO/may_be_diagnosed_by has relationship other than synonymous, narrower, or broader 1022
RO/may_diagnose has relationship other than synonymous, narrower, or broader 1022
RO/has_pharmacokinetics has relationship other than synonymous, narrower, or broader 799
RO/pharmacokinetics_of has relationship other than synonymous, narrower, or broader 799
RO/induced_by has relationship other than synonymous, narrower, or broader 750
RO/induces has relationship other than synonymous, narrower, or broader 750
RO/has_contraindicating_mechanism_of_action has relationship other than synonymous, narrower, or broader 732
RO/contraindicating_mechanism_of_action_of has relationship other than synonymous, narrower, or broader 732
RO/has_contraindicating_physiologic_effect has relationship other than synonymous, narrower, or broader 640
RO/contraindicating_physiologic_effect_of has relationship other than synonymous, narrower, or broader 640
RO/metabolic_site_of has relationship other than synonymous, narrower, or broader 385
RO/site_of_metabolism has relationship other than synonymous, narrower, or broader 385
RO/active_metabolites_of has relationship other than synonymous, narrower, or broader 65
RO/has_active_metabolites has relationship other than synonymous, narrower, or broader 65
RO/may_inhibit_effect_of has relationship other than synonymous, narrower, or broader 13
RO/effect_may_be_inhibited_by has relationship other than synonymous, narrower, or broader 13

Semantic Type Distribution

Semantic Type Id Semantic Type Name Total Count Percentage Distribution
T200 Clinical Drug 12949 34.4
T121 Pharmacologic Substance 8548 22.7
T109 Organic Chemical 7543 20
T116 Amino Acid, Peptide, or Protein 4830 12.8
T047 Disease or Syndrome 2862 7.6
T123 Biologically Active Substance 2174 5.8
T126 Enzyme 1530 4.1
T044 Molecular Function 1302 3.5
T129 Immunologic Factor 1122 3
T042 Organ or Tissue Function 840 2.2
T130 Indicator, Reagent, or Diagnostic Aid 758 2
T191 Neoplastic Process 612 1.6
T168 Food 573 1.5
T192 Receptor 551 1.5
T122 Biomedical or Dental Material 461 1.2
T197 Inorganic Chemical 438 1.2
T195 Antibiotic 426 1.1
T203 Drug Delivery Device 415 1.1

Preferred Name Semantic Type Distribution

This table is a breakdown of semantic types for concepts in which NDFRT provides the preferred name for that concept.

Semantic Type Id Semantic Type Name Total Count Percentage Distribution
T044 Molecular Function 1099 2.9
T042 Organ or Tissue Function 770 2

Source Overlap

Source # Concepts Sharing Atom/# Total Concepts Percentage Overlap
VANDF 22084/37647 58.7
RXNORM 16494/37647 43.8
SNOMEDCT_US 15821/37647 42
MSH 15797/37647 42
SCTSPA 15642/37647 41.5
MSHFRE 13851/37647 36.8
MSHGER 13712/37647 36.4
MSHSPA 13642/37647 36.2
MSHPOR 13604/37647 36.1
MSHCZE 13599/37647 36.1
MSHITA 13561/37647 36
MSHRUS 13546/37647 36
MSHPOL 13331/37647 35.4
MSHSWE 12841/37647 34.1
NDDF 12652/37647 33.6
MSHJPN 12630/37647 33.5
MSHFIN 12473/37647 33.1
MMSL 11867/37647 31.5
CHV 8997/37647 23.9
RCD 8462/37647 22.5
NCI 8435/37647 22.4
MMX 8421/37647 22.4
SNMI 7676/37647 20.4
MTHSPL 7570/37647 20.1
GS 6872/37647 18.3
MSHNOR 6305/37647 16.7
MEDCIN 6024/37647 16
MDDB 5583/37647 14.8
SNM 4762/37647 12.6
CSP 4676/37647 12.4
MSHDUT 4216/37647 11.2
MSHSCR 4175/37647 11.1
NCI_FDA 4134/37647 11
LCH_NW 3918/37647 10.4
MDRCZE 3520/37647 9.4
MDRSPA 3520/37647 9.4
MDR 3520/37647 9.4
MDRDUT 3520/37647 9.4
MDRFRE 3520/37647 9.4
MDRGER 3520/37647 9.4
MDRITA 3520/37647 9.4
MDRPOR 3520/37647 9.4
MDRHUN 3520/37647 9.4
MDRJPN 3516/37647 9.3
ICPC2ICD10ENG 2807/37647 7.5
LNC 2722/37647 7.2
AOD 2666/37647 7.1
LCH 2248/37647 6
ATC 2168/37647 5.8
ICD10CM 2144/37647 5.7
ICPC2ICD10DUT 2112/37647 5.6
CCPSS 1775/37647 4.7
DXP 1737/37647 4.6
OMIM 1647/37647 4.4
ICD10AM 1597/37647 4.2
COSTAR 1464/37647 3.9
NCI_NCI-GLOSS 1424/37647 3.8
MTHICD9 1381/37647 3.7
USPMG 1356/37647 3.6
ICD10 1343/37647 3.6
KCD5 1336/37647 3.5
ICD10DUT 1333/37647 3.5
DMDICD10 1331/37647 3.5
ICPC2P 1328/37647 3.5
HPO 1317/37647 3.5
ICD9CM 1310/37647 3.5
CST 1138/37647 3
WHO 1100/37647 2.9
PDQ 1094/37647 2.9
WHOPOR 1089/37647 2.9
WHOFRE 1088/37647 2.9
NCI_NICHD 1038/37647 2.8
WHOGER 1001/37647 2.7
MEDLINEPLUS 966/37647 2.6
WHOSPA 931/37647 2.5
PSY 892/37647 2.4
RCDAE 810/37647 2.2
NCI_DCP 571/37647 1.5
SNOMEDCT_VET 492/37647 1.3
BI 487/37647 1.3
RCDSY 486/37647 1.3

Last Reviewed: January 14, 2016