This page lists UMLS Metathesaurus data elements and traces them back to the specific source data that populates them.
VSAB: SNOMEDCT_2022_09_01
Version: 20220901
ReleaseCode: US1000124
Edition: USEditionRF2
| before/after |
| partially_equivalent_to (same inverse) |
| possibly_replaced_by/possibly_replaces |
| process_acts_on/acted_on_by_process |
The Metathesaurus SNOMEDCT data is taken from the following tab-delimited SNOMEDCT files, found in the specified folders under SnomedCT_<edition>_PRODUCTION_<YYYYMMDD>T120000Z/Snapshot/:
| Subfolder | File name | Short name |
|---|---|---|
| Terminology | sct2_Concept_Snapshot_<ReleaseCode>_<YYYYMMDD>.txt | Concept |
| Terminology | sct2_Description_Snapshot-en_<ReleaseCode>_<YYYYMMDD>.txt | Description |
| Terminology | sct2_Relationship_Snapshot_<ReleaseCode>_<YYYYMMDD>.txt | Relationship |
| Terminology | sct2__RelationshipConcreteValues_Snapshot_<ReleaseCode>_<YYYYMMDD>.txt | RelationshipConcreteValues |
| Terminology | sct2_TextDefinition_Snapshot_<ReleaseCode>_<YYYYMMDD>.txt | Definition |
| Refset/Content | der2_cRefset_AssociationSnapshot_<ReleaseCode>_<YYYYMMDD>.txt | Association |
| Refset/Content | der2_cRefset_AttributeValueSnapshot_<ReleaseCode>_<YYYYMMDD>.txt | AttributeValue |
| Refset/Content | der2_Refset_SimpleSnapshot_<ReleaseCode>_<YYYYMMDD>.txt | Simple |
| Refset/Language | der2_cRefset_LanguageSnapshot-en_<ReleaseCode>_<YYYYMMDD>.txt | Language |
| Refset/Map | der2_iisssccRefset_ExtendedMapSnapshot_<ReleaseCode>_<YYYYMMDD>.txt | ExtendedMap |
| Refset/Map | der2_sRefset_SimpleMapSnapshot_<ReleaseCode>_<YYYYMMDD>.txt | SimpleMap |
| Refset/Metadata | der2_ciRefset_DescriptionTypeSnapshot_<ReleaseCode>_<YYYYMMDD>.txt | DescriptionType |
| Refset/Metadata | der2_ssRefset_ModuleDependencySnapshot_<ReleaseCode>_<YYYYMMDD>.txt | ModuleDependency |
| Refset/Metadata | der2_cciRefset_RefsetDescriptorSnapshot_<ReleaseCode>_<YYYYMMDD>.txt | RefsetDescriptor |
For readability, selected field values are mapped as follows in this documentation:
| File.field | Value | Description |
|---|---|---|
| Description.typeId | 900000000000003001 | Fully specified name (FSN) |
| Description.typeId | 900000000000013009 | Synonym |
| Description/Concept/Language.active | 1 | Active |
| Description/Concept/Language.active | 0 | Inactive |
| Language.refSetId | 900000000000509007 | US English |
| Language.refSetId | 900000000000508004 | Great Britain English (GB) |
| Language.acceptabilityId | 900000000000548007 | Preferred |
| Language.acceptabilityId | 900000000000549004 | Acceptable |
| Description/Concept.ModuleId | 900000000000207008 | SNOMEDCT Core |
| Term Type | Origin |
|---|---|
| FN | Full form of descriptor Description..typeId = FSN Description.active = Active Concept.active = Active CODE, SCUI = Description.conceptId SAUI = Description.id STR = Description.term SUPPRESSIBLE=N |
| OF | Obsolete fully specified name Description.typeId = FSN Description.active = Inactive CODE, SCUI = Description.conceptId SAUI = Description.id STR = Description.term SUPPRESSIBLE=O |
| OAF | Obsolete active fully specified name Description.typeId = FSN Description.active = Active Concept.active = Inactive CODE, SCUI = Description.conceptId SAUI = Description.id STR = Description.term SUPPRESSIBLE = O |
| PT | Designated preferred name Description.typeId = Synonym Description.active = Active Concept.active= Active Language.refSetId = US English Language reference set (Active) Language.acceptabilityId = Preferred CODE, SCUI = Description.conceptId SAUI = Description.id STR = Description.term SUPPRESSIBLE=N |
| PTGB | British Preferred Term Description.typeId = Synonym Description.active = Active Concept.active = Active Language.refSetId = GB (not Active in US refSet) Language.acceptablityId = Preferred CODE, SCUI = Description.conceptId SAUI = Description.id STR = Description.term SUPPRESSIBLE=N |
| OP | Obsolete preferred name Description.typeId = Synonym Description.active = Inactive Language.acceptabilityId = Preferred CODE, SCUI = Description.conceptId SAUI = Description.id STR = Description.term SUPPRESSIBLE=O |
| OAP | Obsolete active preferred term Description.typeId = Synonym Description.active = Active Concept.active = Inactive Language.acceptabilityId: Preferred (not Acceptable in US refset) CODE, SCUI = Description.conceptId SAUI = Description.id STR = Description.term SUPPRESSIBLE = O |
| SY | Synonym Description.typeId = Synonym Description.active = Active Concept.active= Active Language.refSetId = US English Language reference set (Active) Language.acceptabilityId = Acceptable CODE, SCUI = Description.conceptId SAUI = Description.id STR = Description.term SUPPRESSIBLE=N |
| SYGB | British Synonym Description.typeId = Synonym Description.active = Active Concept.active = Active Language.refSetId = GB (not Active in US refSet) Language.acceptablityId = Acceptable CODE, SCUI = Description.conceptId SAUI = Description.id STR = Description.term SUPPRESSIBLE=N |
| IS | Obsolete Synonym Description.typeId = Synonym Description.active = Inactive Language.acceptabilityId = Not Preferred in any refset CODE, SCUI = Description.conceptId SAUI = Description.id STR = Description.term SUPPRESSIBLE=O |
| OAS | Obsolete active synonym Description.typeId = Synonym Description.active = Active Concept.active = Inactive Language.acceptabilityId = Acceptable (not Preferred in US Refset) CODE, SCUI = Description.conceptId SAUI = Description.id STR = Description.term SUPPRESSIBLE = O |
| MTH_FN MTH_OF MTH_OAF MTH_PT MTH_PTGB MTH_OP MTH_OAP MTH_SY MTH_SYGB MTH_IS MTH_OAS |
Special MTH_* forms are algorithmically generated for
atoms with the termtypes listed above as follows: If the STR contains the markup syntax SNOMEDCT uses to indicate superscripts ("^sup^") and/or subscripts (">sub<"), two MTH_* forms are generated: 1. One in which the markup syntax is removed, e.g., "CO>2<" becomes "CO2" 2. One in which the markup syntax is converted to an xml-style syntax using "<sup> for superscripts and "<sub>" for subscripts, e.g., "CO>2<" becomes "CO<sub>2</sub>". This data is added during Metathesaurus source processing |
| SB | Subset For any conceptId that occurs as a refsetId in any refSet, its PT is duplicated as an SB atom. CODE, SCUI = refsetId SAUI = Not populated STR = Description.term SUPPRESSIBLE = N |
| XM | Cross Mapping Set One XM (cross Mapping set) atom is generated for each refsetId in ExtendedMap as follows: CODE, SCUI = refsetId SAUI = Not populated STR = "SNOMEDCT_US_yyyy_mm_dd to <VSAB> Mappings" SUPPRESSIBLE = N |
| Attribute Name | STYPE | Origin |
|---|---|---|
| ACTIVE | SCUI | Concept.active also affects the TTY values of this concept's descriptions |
| CASE_SIGNIFICANCE_ID | AUI | Description.caseSignificanceId 900000000000017005 - Entire term case sensitive 900000000000020002 - Initial character case insensitive 900000000000448009 - Case insensitive |
| CHARACTERISTIC_TYPE_ID | RUI | Relationship.characteristicTypeId |
| CONCENTRATION_STRENGTH_DENOMINATOR_VALUE | SCUI | RelationshipConcreteValues.value ~ RelationshipConcreteValues.relationshipGroup where typeId = 1142137007 |
| CONCENTRATION_STRENGTH_NUMERATOR_VALUE | SCUI | RelationshipConcreteValues.value ~ RelationshipConcreteValues.relationshipGroup where typeId = 1142138002 |
| COUNT_OF_ACTIVE_INGREDIENT | SCUI | RelationshipConcreteValues.value ~ RelationshipConcreteValues.relationshipGroup where typeId = 1142140007 |
| COUNT_OF_BASE_OF_ACTIVE_INGREDIENT | SCUI | RelationshipConcreteValues.value ~ RelationshipConcreteValues.relationshipGroup where typeId = 1142139005 |
| CTV3ID | SCUI | SimpleMap.mapTarget where refSetId = 900000000000497000 (CTV3 simple map) |
| DEFAULT_LANGUAGECODE | SCUI | The 2-character ISO639-1 code indicating the language of the source (attached to the SCUI of the source root) |
| DEFAULT_MODULE_ID | SCUI | Core Module Identifier (attached to the SCUI of the source root) |
| DEFINITION_STATUS_ID | SCUI | Concept.definitionStatusId - indicates whether this concept is primitive or fully defined |
| DESCRIPTION_FORMAT | SCUI | DescriptionType.descriptionFormat |
| DESCRIPTION_LENGTH | SCUI | DescriptionType.descriptionLength |
| EFFECTIVE_TIME | SCUI | Concept.effectiveTime |
| FROMRSAB | AUI | SNOMEDCT_US, attached to the XM atom for the Cross Map Set |
| FROMVSAB | AUI | "SNOMEDCT_US_yyyy_mm_dd", attached to the XM atom for the Cross Map Set |
| ICD-O-3_CODE | SCUI | SimpleMap.mapTarget where refSetId = 446608001 (ICD-O simple map reference set) |
| INACTIVATION_INDICATOR | AUI | AttributeValue.valueId where refSetId = 900000000000489007 (Description inactivation indicator reference set) |
| INACTIVATION_INDICATOR | SCUI | AttributeValue.valueId where refSetId = 900000000000490003 (Concept inactivation indicator reference set) |
| MAPSETNAME | AUI | A MAPSETNAME attribute is created for each unique value of refsetId ExtendedMap, attached to the XM atom for the Cross Map Set. The ATV value is the STR of the relevant SB atom. |
| MAPSETRSAB | AUI | "SNOMEDCT_US", attached to the XM atom for the Cross Map Set |
| MAPSETSID | AUI | A MAPSETSID attribute is created for each unique value of ExtendedMap.refSetId, attached to the XM atom for the Cross Map Set |
| MAPSETVERSION | AUI | Version, attached to the XM atom for the Cross Map Set |
| MAPSETVSAB | AUI | "SNOMEDCT_yyyy_mm_dd", attached to the XM atom for the Cross Map Set |
| MODIFIER_ID | RUI | Relationship.modifierId; always 900000000000973015 (Existential) |
| MODULE_ID | AUI | Description.moduleId; only included when moduleId is not the default (core) module |
| MODULE_ID | RUI | Relationship.moduleId; only included when moduleId is not the default (core) module |
| MODULE_ID | SCUI | Concept.moduleId; only included when moduleId is not the default (core) module |
| MTH_MAPFROMCOMPLEXITY | AUI | "SINGLE_SCUI", attached to the XM atom for the Cross Map Set; this data is added during Metathesaurus Source processing. |
| MTH_MAPFROMEXHAUSTIVE | AUI | "N", attached to the XM atom for the Cross Map Set; this data is added during Metathesaurus Source processing |
| MTH_MAPSETCOMPLEXITY | AUI | "N TO N", attached to the XM atom for the Cross Map Set; this data is added during Metathesaurus Source processing |
| MTH_MAPTOCOMPLEXITY | AUI | "SINGLE SDUI, MULTIPLE SDUI", attached to the XM atom for the Cross Map Set; this data is added during Metathesaurus Source processing |
| MTH_MAPTOEXHAUSTIVE | AUI | "N", attached to the XM atom for the Cross Map Set; this data is added during Metathesaurus Source processing |
| PRESENTATION_STRENGTH_DENOMINATOR_VALUE | SCUI | RelationshipConcreteValues.value ~ RelationshipConcreteValues.relationshipGroup where typeId = 1142136003 |
| PRESENTATION_STRENGTH_NUMERATOR_VALUE | SCUI | RelationshipConcreteValues.value ~ RelationshipConcreteValues.relationshipGroup where typeId = 1142135004 |
| REFSET_PATTERN | SCUI | A name for the type (corresponding to the collection of included fields) of the referenced RefSet; attached to the SCUI of RefsetDescriptor.moduleId |
| SOS | AUI | Describes the Cross Map set; attached to the AUI of the XM atom |
| SOURCE_EFFECTIVE_TIME | RUI | ModuleDependency.sourceEffectiveTime |
| SUBSET_MEMBER | AUI | Attached to each member (referencedComponentId) of each RefSet, this attribute includes the refsetId optionally followed by a "~" character, a refSet membership-attribute name, another "~", and a the value of the refset membership-attribute |
| SUBSET_MEMBER | SCUI | Attached to each member (referencedComponentId) of each RefSet, this attribute includes the refsetId optionally followed by a "~" character, a refSet membership-attribute name, another "~", and a the value of the refset membership-attribute |
| TARGET_EFFECTIVE_TIME | RUI | ModuleDependency.targetEffectiveTime |
| TORSAB | AUI | The RSAB corresponding to the target source of the cross map set, per release notes |
| TOVSAB | AUI | The VSAB of the target source, per release notes |
| TYPE_ID | AUI | Description.typeId |
| UMLSREL | SCUI | The REL for MRREL.RRF, attached to the concept for each typeId value used in the Relation file. |
| UMLSRELA | SCUI | The RELA value used in MRREL.RRF, attached to the concept for each typeId value used in the Relation file. |
| Field | Origin |
|---|---|
| SATUI | Definition.id |
| DEF | Definition.term |
| SUPPRESS | Definition.active (N for active = 1; O for active = 0) |
| REL/Inverse REL | RELA/Inverse RELA | ORIGIN |
|---|---|---|
| CHD/PAR | isa/inverse_isa | Hierarchical relationships are derived from rows of relationships where type.Id = 116680003 ("Is a") |
| RB/RN RO SY |
(many RELA values) | Derived from rows of relationships where typeId is not 116680003 ("Is a") REL and RELA values used for each typeId are specified by UMLSREL and UMLSRELA attributes, respectively (see above). |
| RO | mapped_from, mapped_to | Represent the 1 - 1 cross maps in ExtendedMaps |