ICD-10-CM Human Readable Map

$716 / year

This dataset contains the human readable form of the SNOMED CT to ICD-10-CM cross map. This browser spreadsheet dataset is the same as the Extended Map Refset with the descriptive names for the SNOMED CT (Systematized Nomenclature of Medicine-Clinical Terms) concept, ICD-10-CM (International Classification of Diseases, Tenth Revision, Clinical Modification) code and Map_Category_Id added for readability.


To support browsing and understandability of the MAP, a tab delimited UTF-8 dataset which can be imported into spreadsheet software such as Microsoft Excel® is included with the release. This can be loaded with the text import features of Excel and most spreadsheets. The spreadsheet data format mimics the exemplar appendices of the technical documentation and is a “readable” version of the map that can be understood by a non-technical individual.

SNOMED CT is an extensive clinical terminology that was formed by the merger, expansion, and restructuring of SNOMED RT (Reference Terminology) and the United Kingdom National Health Service (NHS) Clinical Terms (also known as the Read Codes). It is the most comprehensive clinical vocabulary available in English (or any language). SNOMED CT is concept-oriented and has an advanced structure that meets most accepted criteria for a well-formed, machine-readable terminology. It has been designated as a US standard for electronic health information exchange in Interoperability Specifications produced by the Healthcare Information Technology Standards Panel and has also been adopted for use by the US Federal Government, through the Consolidated Health Informatics (CHI) Initiative, for several clinical domains.

This cross map is a directed set of relationships from SNOMED CT source concepts to ICD-10-CM target classification codes. The SNOMED CT source domains for this mapping are limited to subtypes of 404684003 |clinical findings|, 272379006 |event| and 243796009 |situation with explicit context|.

This update of the map includes:
– 100,185 SNOMED CT source concepts including:
– 94,844 clinical findings
– 2,813 events
– 2,528 situations with explicit context
– 5,696 source concepts could not be assigned a map target due to issues of ambiguity or target scope
– A total of 168,810 map records, with a maximum of 23 map records per map group

Date Created


Last Modified




Update Frequency


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Spatial Coverage

United States


John Snow Labs; International Health Terminology Standards Development Organization (IHTSDO), U.S. National Library of Medicine (NLM);

Source License URL

Source License Requirements


Source Citation



Clinical Terminology, SNOMED CT, ICD-10-CM Codes, Medical Terminology, Systematized Nomenclature of Medicine Clinical Terms, Healthcare Terminology Mapping, Electronic Health Records, SNOMED to ICD-10 Map

Other Titles

SNOMED CT Cross Mapping of Human Readable Map and ICD-10-CM, ICD-10-CM Mapping of SNOMED CT Human Readable Map

Map_Record_IdAn unsigned integer, uniquely identifying the map category record.stringrequired : 1
Effective_TimeEffective_Time Specifies the inclusive date at which this change becomes effective.daterequired : 1
Is_ActiveSpecifies whether the member’s state was active (=1) or inactive (=0) from the nominal release date specified by the Effective_Time field.booleanrequired : 1
Module_IdIdentifies the member version’s module. Set to a child of 900000000000443000|Module| within the metadata hierarchy.integerrequired : 1 level : Nominal
Refset_IdSet to one of the children of the |Complex map type| concept in the metadata hierarchy.integerrequired : 1 level : Nominal
Referenced_Component_IdThe SNOMED CT identifier of the source concept that is being mapped in this recordintegerrequired : 1 level : Nominal
Source_Concept_NameThe fully specified name of the SNOMED CT source concept being mappedstringrequired : 1
Map_GroupA collation identifier which specifies one or more map records which are to be evaluated in sequence for determination of at most one ICD-10-CM target codes for this mapintegerrequired : 1 level : Nominal
Map_PriorityThe sequence number for evaluation of this map record within the map groupintegerrequired : 1 level : Nominal
Map_RuleThe map rule for this map recordstringrequired : 1
Map_AdviceThe map advice for this map recordstringrequired : 1
Map_TargetTarget ICD-10-CM classification code for this map recordstring-
ICD_10_CM_Code_NameWHO term assigned to the target ICD-10-CM code for this recordstring-
Map_Category_IdThe metadata identifier for the map category assigned to this map record, a child of 447634004 |ICD-10-CM map category value|integerrequired : 1 level : Nominal
Map_Category_ValuePrimary term for the map category metadata assigned to this map recordstringrequired : 1
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