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Unified Medical Language System (UMLS)

UMLS Vocabularies

HCDT (CDT in HCPCS) - Statistics

Semantic Type Distribution

Semantic Type IDSemantic Type NameCount Percentage Distribution
T061Therapeutic or Preventive Procedure53474.5
T074Medical Device648.9
T060Diagnostic Procedure608.4
T058Health Care Activity425.9
T059Laboratory Procedure131.8

Term Type Counts

Term TypeExpanded FormCount
ABAbbreviation in any source vocabulary699
PTDesignated preferred name699
OAObsolete abbreviation21
OPObsolete preferred name21

Attribute Counts

Attribute TypeExpanded FormCount
HMPHCPCS Multiple Pricing Indicator Code - code used to identify instances where a procedure could be priced.720
HADHCPCS Action Effective Date - effective date of action to a procedure or modifier code.720
HCDHCPCS Code Added Date - year the HCPCS code was added to the HCFA Common Procedure Coding System.720
HBTHCPCS Berenson-Eggers Type of Service Code - BETOS for the procedure code based on generally agreed upon clinically meaningful groupings of procedures and services.720
HCCHCPCS Coverage Code - code denoting Medicare coverage status. There are two subelements separated by "=".720
HPIHCPCS Pricing Indicator Code - used to identify the appropriate methodology for developing unique pricing amounts under Part B.720
HACHCPCS action code - code denoting the change made to a procedure or modifier code within the HCPCS system.720
HTSHCPCS Type of Service Code - carrier assigned HCFA Type of Service which describes the particular kind(s) of service represented by the procedure code.720
HAQHCPCS Anesthesia Base Unit Quantity - base unit represents the level of intensity for anesthesia procedure services that reflects all activities except time.720
HSNHCPCS Statute Number identifying statute reference for coverage or noncoverage of procedure or service.359
HMRHCPCS Medicare Carriers Manual reference section number - number identifying a section of the Medicare Carriers Manual.214
HXRHCPCS Cross reference code - an explicit reference crosswalking a deleted code or a code that is not valid for Medicare to a valid current code (or range of codes).176
HPNHCPCS processing note number identifying the processing note contained in Appendix A of the HCPCS Manual.53
HTDHCPCS Termination Date - last date for which a procedure or code may be used by Medicare Providers.21
HIRHCPCS Coverage Issues Manual Reference Section Number - number identifying the Reference Section of the Coverage Issues Manual.15

Relationship Counts

Relation Name/Additional LabelExpanded FormCount
SY/expanded_form_ofsource asserted synonymy./Expanded form of720
SY/has_expanded_formsource asserted synonymy./Has expanded form720
RQ/mapped_torelated and possibly synonymous./Mapped to137
RQ/mapped_fromrelated and possibly synonymous./Mapped from137

Definition Count


Source Overlap

Source# Concepts Sharing Atom/# Total ConceptsPercentage Distribution