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04. Fields 1XX – Headings – 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:


M21 tag Description CBS MARC tag - main/master level PICA+ tag -main/master level CBS MARC tag -
local level
PICA+ tag -
local level
CBS MARC 21 tag -
copy level
PICA+ tag -
copy level
100 Heading – Personal Name M100 020A L100 120A C100 220A
101   M101 020B L101 120B C101 220B
102   M102 020C L102 120C C102 220C
103   M103 020D L103 120D C103 220D
104   M104 020E L104 120E C104 220E
105   M105 020F L105 120F C105 220F
106   M106 020G L106 120G C106 220G
107   M107 020H L107 120H C107 220H
108   M108 020I L108 120I C108 220I
109   M109 020J L109 120J C109 220J
110 Heading – Corporate Name M110 020K L110 120K C110 220K
111 Heading – Meeting Name M111 020L L111 120L C111 220L
112   M112 020M L112 120M C112 220M
113   M113 020N L113 120N C113 220N
114   M114 020O L114 120O C114 220O
115   M115 020P L115 120P C115 220P
116   M116 020Q L116 120Q C116 220Q
117   M117 020R L117 120R C117 220R
118   M118 020S L118 120S C118 220S
119   M119 020T L119 120T C119 220T
120   M120 020U L120 120U C120 220U
121   M121 020V L121 120V C121 220V
122   M122 020W L122 120W C122 220W
123   M123 020X L123 120X C123 220X
124   M124 020Y L124 120Y C124 220Y
125   M125 020Z L125 120Z C125 220Z
126   M126 021A L126 121A C126 221A
127   M127 021B L127 121B C127 221B
128   M128 021C L128 121C C128 221C
129   M129 021D L129 121D C129 221D
130 Heading – Uniform Title M130 021E L130 121E C130 221E
131   M131 021F L131 121F C131 221F
132   M132 021G L132 121G C132 221G
133   M133 021H L133 121H C133 221H
134   M134 021I L134 121I C134 221I
135   M135 021J L135 121J C135 221J
136   M136 021K L136 121K C136 221K
137   M137 021L L137 121L C137 221L
138   M138 021M L138 121M C138 221M
139   M139 021N L139 121N C139 221N
140 Uniform Title [OBSOLETE, 1997] [CAN/MARC only] M140 021O L140 121O C140 221O
141   M141 021P L141 121P C141 221P
142   M142 021Q L142 121Q C142 221Q
143 Collective Title [OBSOLETE, 1997] [CAN/MARC only] M143 021R L143 121R C143 221R
144   M144 021S L144 121S C144 221S
145   M145 021T L145 121T C145 221T
146   M146 021U L146 121U C146 221U
147 Heading – Named Event1 M147 021V L147 121V C147 221V
148 Heading – Chronological Term2 M148 021W L148 121W C148 221W
149   M149 021X L149 121X C149 221X
150 Heading – Topical Term M150 021Y L150 121Y C150 221Y
151 Heading – Geographic Name M151 021Z L151 121Z C151 221Z
152   M152 022A L152 122A C152 222A
153   M153 022B L153 122B C153 222B
154   M154 022C L154 122C C154 222C
155 Heading – Genre/Form Term M155 022D L155 122D C155 222D
156   M156 022E L156 122E C156 222E
157   M157 022F L157 122F C157 222F
158   M158 022G L158 122G C158 222G
159   M159 022H L159 122H C159 222H
160   M160 022I L160 122I C160 222I
161   M161 022J L161 122J C161 222J
162 Heading – Medium of Performance Term3 M162 022K L162 122K C162 222K
163   M163 022L L163 122L C163 222L
164   M164 022M L164 122M C164 222M
165   M165 022N L165 122N C165 222N
166   M166 022O L166 122O C166 222O
167   M167 022P L167 122P C167 222P
168   M168 022Q L168 122Q C168 222Q
169   M169 022R L169 122R C169 222R
170   M170 022S L170 122S C170 222S
171   M171 022T L171 122T C171 222T
172   M172 022U L172 122U C172 222U
173   M173 022V L173 122V C173 222V
174   M174 022W L174 122W C174 222W
175   M175 022X L175 122X C175 222X
176   M176 022Y L176 122Y C176 222Y
177   M177 022Z L177 122Z C177 222Z
178   M178 023A L178 123A C178 223A
179   M179 023B L179 123B C179 223B
180 Heading – General Subdivision M180 023C L180 123C C180 223C
181 Heading – Geographic Subdivision M181 023D L181 123D C181 223D
182 Heading – Chronological Subdivision M182 023E L182 123E C182 223E
183   M183 023F L183 123F C183 223F
184   M184 023G L184 123G C184 223G
185 Heading – Form Subdivision M185 023H L185 123H C185 223H
186   M186 023I L186 123I C186 223I
187   M187 023J L187 123J C187 223J
188   M188 023K L188 123K C188 223K
189   M189 023L L189 123L C189 223L
190   M190 023M L190 123M C190 223M
191   M191 023N L191 123N C191 223N
192   M192 023O L192 123O C192 223O
193   M193 023P L193 123P C193 223P
194   M194 023Q L194 123Q C194 223Q
195   M195 023R L195 123R C195 223R
196   M196 023S L196 123S C196 223S
197   M197 023T L197 123T C197 223T
198   M198 023U L198 123U C198 223U
199   M199 023V L199 123V C199 223V


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.