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03. Fields 01X-09X – Numbers and Codes – authority format

How must this table be read?

  • Cells marked with yellow are defined in the CBS MARC 21 format. These tags are "active", i.e. they can be used. So, tags marked with yellow are defined in the CBS MARC 21 format.
  • Cells marked with green are defined in the CBS MARC 21 format. These tags are extensions to, i.e. these are not part of the Library of Congress and the OCLC (WorldCat) format. So, tags marked with green are defined in the CBS MARC 21 format.
  • Cells with no color. These tags are "reserved" CBS MARC 21 tags; thus, these are non-existing tags now – for the main/master level, the local (LBD) and copy (LHR) level. These tags are only reserved for potential future use. Tags marked with no color may not be used in the CBS MARC 21 format now. So, when we need an extension of the CBS MARC 21 format or a new tag is defined by the MAC (MARC Advisory Committee), we already know what the CBS MARC 21 and CBS MARC 21 PICA+ tags will be.
  • Tag descriptions marked with purple are specific OCLC MARC 21 (WorldCat) tags.

For more MARC 21 documentation:


Description CBS MARC tag - main/master level PICA+ tag - main/master level CBS MARC tag - local level PICA+ tag -
local level
CBS MARC tag - copy level PICA+ tag -
copy level
010 Library of Congress Control Number M010 015A L010 115A C010 215A
011   M011 015B L011 115B C011 215B
012   M012 015C L012 115C C012 215C
013   M013 015D L013 115D C013 215D
014 Link to Bibliographic Record for Serial or Multipart Item1 M014 015E L014 115E C014 215E
015   M015 015F L015 115F C015 215F
016 National Bibliographic Agency Control Number M016 015G L016 115G C016 215G
017   M017 015H L017 115H C017 215H
018   M018 015I L018 115I C018 215I
019   M019 015J L019 115J C019 215J
020 International Standard Book Number (ISBN) M020 015K L020 115K C020 215K
021   M021 015L L021 115L C021 215L
022 International Standard Serial Number (ISSN) M022 015M L022 115M C022 215M
023   M023 015N L023 115N C023 215N
024 Other Standard Identifier M024 015O L024 115O C024 215O
025   M025 015P L025 115P C025 215P
026   M026 015Q L026 115Q C026 215Q
027   M027 015R L027 115R C027 215R
028   M028 015S L028 115S C028 215S
029   M029 015T L029 115T C029 215T
030   M030 015U L030 115U C030 215U
031 Musical Incipits Information M031 015V L031 115V C031 215V
032   M032 015W L032 115W C032 215W
033   M033 015X L033 115X C033 215X
034 Coded Cartographic Mathematical Data M034 015Y L034 115Y C034 215Y
035 System Control Number M035 015Z L035 115Z C035 215Z
036   M036 016A L036 116A C036 216A
037   M037 016B L037 116B C037 216B
038   M038 016C L038 116C C038 216C
039   M039 016D L039 116D C039 216D
040 Cataloging Source M040 016E L040 116E C040 216E
041   M041 016F L041 116F C041 216F
042 Authentication Code M042 016G L042 116G C042 216G
043 Geographic Area Code M043 016H L043 116H C043 216H
044   M044 016I L044 116I C044 216I
045 Time Period of Heading M045 016J L045 116J C045 216J
046 Special Coded Dates M046 016K L046 116K C046 216K
047   M047 016L L047 116L C047 216L
048   M048 016M L048 116M C048 216M
049   M049 016N L049 116N C049 216N
050 Library of Congress Call Number M050 016O L050 116O C050 216O
051   M051 016P L051 116P C051 216P
052 Geographic Classification2 M052 016Q L052 116Q C052 216Q
053 LC Classification Number M053 016R L053 116R C053 216R
054   M054 016S L054 116S C054 216S
055 Library and Archives Canada Call Number3 M055 016T L055 116T C055 216T
056   M056 016U L056 116U C056 216U
057   M057 016V L057 116V C057 216V
058 LC Classification Number Assigned in Canada [OBSOLETE, 1997] [CAN/MARC only] M058 016W L058 116W C058 216W
059   M059 016X L059 116X C059 216X
060 National Library of Medicine Call Number M060 016Y L060 116Y C060 216Y
061   M061 016Z L061 116Z C061 216Z
062   M062 017A L062 117A C062 217A
063 NLM Classification Number Assigned by NLM [OBSOLETE, 1997] [CAN/MARC only] M063 017B L063 117B C063 217B
064   M064 017C L064 117C C064 217C
065 Other Classification Number4 M065 017D L065 117D C065 217D
066 Character Sets Present5 M066 017E L066 117E C066 217E
067   M067 017F L067 117F C067 217F
068 NLM Classification Number Assigned in Canada [OBSOLETE, 1997] [CAN/MARC only] M068 017G L068 117G C068 217G
069   M069 017H L069 117H C069 217H
070 National Agricultural Library Call Number M070 017I L070 117I C070 217I
071   M071 017J L071 117J C071 217J
072 Subject Category Code6 M072 017K L072 117K C072 217K
073 Subdivision Usage M073 017L L073 117L C073 217L
074   M074 017M L074 117M C074 217M
075 Type of Entity M075 017N L075 117N C075 217N
076   M076 017O L076 117O C076 217O
077   M077 017P L077 117P C077 217P
078   M078 017Q L078 117Q C078 217Q
079   M079 017R L079 117R C079 217R
080 Universal Decimal Classification Number M080 017S L080 117S C080 217S
081   M081 017T L081 117T C081 217T
082 Dewey Decimal Call Number M082 017U L082 117U C082 217U
083 Dewey Decimal Classification Number M083 017V L083 117V C083 217V
084   M084 017W L084 117W C084 217W
085   M085 017X L085 117X C085 217X
086 Government Document Call Number M086 017Y L086 117Y C086 217Y
087 Government Document Classification Number M087 017X L087 117X C087 217X
088 Document Shelving Number (CODOC) [OBSOLETE, 1997] [CAN/MARC only] M088 018A L088 118A C088 218A
089 Local Call Numbers / Local Call Number (Obsolete) M089 018B L089 118B C089 218B
090 Local Call Numbers M090 018C L090 118C C090 218C
091 Local Call Numbers M091 018D L091 118D C091 218D
092 Local Call Numbers M092 018E L092 118E C092 218E
093 Local Call Numbers M093 018F L093 118F C093 218F
094 Local Call Numbers M094 018G L094 118G C094 218G
095 Local Call Numbers M095 018H L095 118H C095 218H
096 Local Call Numbers M096 018I L096 118I C096 218I
097 Local Call Numbers M097 018J L097 118J C097 218J
098 Local Call Numbers / Other Classification Schemes M098 018K L098 118K C098 218K
099 Local Call Numbers / Local Free-Text Call Number M099 018L L099 118L C099 218L


1. December 2019: Not (yet) defined in OCLC MARC 21.
2. December 2019: Not (yet) defined in OCLC MARC 21.
3. December 2019: Not (yet) defined in OCLC MARC 21.
4. December 2019: Not (yet) defined in OCLC MARC 21.
5. December 2019: Not (yet) defined in OCLC MARC 21.
6. December 2019: Not (yet) defined in OCLC MARC 21.