Skip Navigation Bar

Unified Medical Language System® (UMLS®)

UMLS Quick Start Guide | FAQs | Customer Support | UMLS Site Map

2008AB FDA National Drug Code Directory Source Information

Counts
Relationship Relationship Attribute Count (MRREL.RRF)
RO included_in 114
Background
  • * Indicates blank relationship attribute (rela); not all relationships are assigned an attribute.
  • Orange colored rel/rela pairs indicate that the current row is an inverse relationship of the row above it. All relationships in MRREL.RRF are bi-directional.
  • Metathesaurus relationships are traditionally read from right to left.
  • Every row in MRREL.RRF has a RUI (relationship unique identifier).
  • Samples below are taken from MRREL.RRF, although not every field is shown. Associated terms (str) from MRCONSO.RRF are also shown for clarity.
  • Relationship abbreviations appear in MRREL, i.e., SY.
Relationship Definitions
  • AQ: allowed qualifier
  • CHD: has child (narrower hierarchical term)
  • DEL: deleted concept
  • PAR: has parent (broader hierarchical term)
  • QB: can be qualifier by
  • RB: has a broader relationship
  • RL: has similar or like relationship
  • RN: has narrower relationship
  • RO: has relationship other than synonymous, narrower or broader
  • RQ: related and possibly synonymous
  • SIB: has sibling
  • SY: source-asserted synonymy
Sample Data
RO  (return to top)
cui1 aui1 stype1 str rel rela cui2 aui2 stype2 str
C2003929 A12942861 AUI SODIUM CHLORIDE 9 MG INTRAVASCULAR INJECTION RO included_in C1962257 A13277230 AUI SODIUM CHLORIDE 9 MG INTRAVASCULAR INJECTION_#2
C1962257 A13277230 AUI SODIUM CHLORIDE 9 MG INTRAVASCULAR INJECTION_#2 RO includes C2003929 A12942861 AUI SODIUM CHLORIDE 9 MG INTRAVASCULAR INJECTION
C1999248 A11269505 AUI TRIAMCINOLONE ACETONIDE 55 MCG NASAL SOLUTION [NASACORT] RO included_in C1995847 A14218996 AUI TRIAMCINOLONE ACETONIDE 55 MCG NASAL SOLUTION [NASACORT]_#2
C1995847 A14218996 AUI TRIAMCINOLONE ACETONIDE 55 MCG NASAL SOLUTION [NASACORT]_#2 RO includes C1999248 A11269505 AUI TRIAMCINOLONE ACETONIDE 55 MCG NASAL SOLUTION [NASACORT]
C2346440 A10683085 AUI PIRBUTEROL ACETATE 0.2 MG INHALATION AEROSOL [MAXAIR] RO included_in C2362310 A15515577 AUI PIRBUTEROL ACETATE 0.2 MG INHALATION AEROSOL [MAXAIR]_#1
C2362310 A15515577 AUI PIRBUTEROL ACETATE 0.2 MG INHALATION AEROSOL [MAXAIR]_#1 RO includes C2346440 A10683085 AUI PIRBUTEROL ACETATE 0.2 MG INHALATION AEROSOL [MAXAIR]
C2346435 A12937862 AUI HEPATITIS A VACCINE, INACTIVATED 720 UNT INTRAMUSCULAR SUSPENSION [HAVRIX] RO included_in C1637805 A15515223 AUI HEPATITIS A VACCINE, INACTIVATED 720 UNT INTRAMUSCULAR SUSPENSION [HAVRIX]_#2
C1637805 A15515223 AUI HEPATITIS A VACCINE, INACTIVATED 720 UNT INTRAMUSCULAR SUSPENSION [HAVRIX]_#2 RO includes C2346435 A12937862 AUI HEPATITIS A VACCINE, INACTIVATED 720 UNT INTRAMUSCULAR SUSPENSION [HAVRIX]