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Unified Medical Language System® (UMLS®)

2012AB ICD-9-CM Entry Terms Source Information


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Term Type Description Count (MRCONSO.RRF)
ET Entry term 23519


  • A term type indicates the role an atom plays in its source
  • An atom is the smallest unit of naming in a source; that is, a specific string with specific code values and identifiers from a specific source.
  • Every atom has a separate row in MRCONSO.RRF. Every atom is assigned a term type.
  • Term types are assigned based on source documentation or NLM understanding of the source.
  • Sample data are provided for every term type in the source (see below).
  • See Metathesaurus Documentation for a list of all term type abbreviations and their full names.
  • See Metathesaurus Documentation for a list of sources and their associated term types, listed in default order of precedence.
  • See Section 2.3 of the UMLS Reference Manual for more information on terms and term types in the UMLS Metathesaurus.

Sample Data


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C0275903 A8376612 L0401421 S1930856 012.8 012.8 Tuberculosis of nasal sinus NOS
C0086541 A8339933 L0002012 S0003609 085.1 085.1 Aleppo boil
C0275832 A8363129 L0404998 S0733651 091.3 091.3 Secondary syphilis of tonsils
C0276668 A8354033 L0382968 S0477264 114.3 114.3 Coccidioidal granuloma
C1455684 A8376187 L1710029 S1930410 12.14 12.14 Total iridectomy
C0036202 A8373958 L0386293 S1928098 135 135 Darier-Roussy Sarcoid
C0865147 A8375124 L1709307 S1929296 242.8 242.8 Thyrotoxicosis from ingestion of excessive thyroid material
C0865161 A8375949 L1709864 S1930156 246.8 246.8 Hypo-TBG-nemia
C0865181 A8375320 L1709443 S1929505 255.2 255.2 Female virilization