|First Indicator||Second Indicator|
|Type of corporate name entry element
0 - Inverted name
1 - Jurisdiction name
2 - Name in direct order
|110 - Undefined
# - Undefined
610 - Thesaurus
0 - Library of Congress Subject Headings
1 - LC subject headings for children's literature
2 - Medical Subject Headings
3 - National Agricultural Library subject authority file
4 - Source not specified
5 - Canadian Subject Headings
6 - Répertoire de vedettes-matière
7 - Source specified in subfield $2
710 - Undefined
# - Undefined
Name and title portions
Subject subdivision portion
Subelements occurring in corporate name fields. A corporate name, a title of a work, event, program, etc., and/or a city section name entered under the name of a jurisdiction are X10 corporate names. A name of a jurisdiction that represents an ecclesiastical entity is an X10 corporate name. For subject purposes, other names of jurisdictions used alone or followed by subject subdivisions are geographic names and are contained in field 651. For non-subject purposes, other names of jurisdictions used alone are contained in 110 and 710 fields. A named meeting that is entered under a corporate name is contained in the X10 fields. A meeting entered directly under its own name is contained in the X11 fields. Corporate names used in phrase subject headings (e.g., Catholic Church in art) are contained in field 650.
Guidelines for applying all content designators except the second indicator position are given in this section. A field-specific list of content designators and guidelines for applying the second indicator position are provided under the description for each specific X10 field.
First Indicator - Type of corporate name entry element
Form of the entry element of the field. The values distinguish among an inverted name, a jurisdiction name, and a corporate name in direct order used as the entry element.
Corporate name begins with a personal name in inverted order (surname, forename).
|110||0#$aNewman (Jean and Dorothy) Industrial Relations Library.|
Corporate names beginning with a personal surname alone, a personal name in direct order (not inverted), or containing a personal name other than as the entry element are identified by value 2.
|110||2#$aEdwin Markham Child Care Center.|
Name of a jurisdiction that is also an ecclesiastical entity or is a jurisdiction name under which a corporate name or a title is entered. In fields 110 and 710, the value can indicate that the entry element is a name of jurisdiction used alone.
|110||1#$aPennsylvania.$bState Board of Examiners of Nursing Home Administrators.|
|110||1#$aWest Virginia.$bDept. of Veterans Affairs.|
Corporate names containing a jurisdiction name as an integral part of the name or qualified by a jurisdiction name are identified by value 2.
|110||2#$aUniversity of Illinois at Urbana-Champaign.$bExperimental Music Studios.|
|110||2#$aArizona Family Planning Council.|
Name is in direct order. The heading may contain a parenthetical qualifier or may be an acronym or an initialism.
|110||2#$aNational Gardening Association (U.S.)|
Unique to the function of the corporate name field. It is described under the following fields: 110 (Primary Name-Corporate); 610 (Subject Added Entry-Corporate Name); and 710 (Added Entry-Corporate Name).
$a - Corporate name or jurisdiction name as entry element
Name of a corporate body or the first entity when subordinate units are present; a jurisdiction name under which a corporate body, city section, or a title of a work, event, program, etc. is entered; or a jurisdiction name that is also an ecclesiastical entity. In fields 110 and 710, the subfield can contain the name of a jurisdiction used alone. A parenthetical qualifying term, jurisdiction name, or date (other than the date of a meeting) is not separately subfield coded.
|110||2#$aAmerican Physical Therapy Association of Maryland.|
|110||2#$aPlanned Parenthood of Southern Indiana.|
|110||2#$aKiddie Day Care.|
|110||1#$aBirmingham (Ala.)$bBoard of Health.|
|110||2#$aNew York Gray Panthers.|
$b - Subordinate unit
Name of a subordinate corporate unit, a name of a city section, or a name of a meeting entered under a corporate or a jurisdiction name.
|110||2#$aAmerican Red Cross.$bWestern West Virginia Chapter.|
$c - Location of meeting
Place name or a name of an institution where a meeting is held. Multiple adjacent locations are contained in a repeatable subfield $c.
|110||2#$aAmerican Library Association.$bConference$c(Washington, D.C.; $cLondon, England)|
Place name added parenthetically to a corporate name as a qualifier is not separately subfield coded.
|610||20$aEmpire State Building (New York, N.Y.)|
$d - Date of meeting
|110||2#$aInternational Labour Organisation.$bEuropean Regional Conference$n(2nd :$d1968 :$cGeneva, Switzerland)|
$e - Relator term
Designation of function that describes the relationship between a name and a community information entity.
Relator codes, which also specify the relationship of a corporate body to a community information entity, are contained in subfield $4.
$f - Date of a work [610/710]
Date of publication used with a title of a work in a name/title field.
$g - Miscellaneous information
Data element that is not more appropriately contained in another defined subfield. In a heading for a meeting entered under a corporate body, subfield $g also contains a subelement that is not more appropriately contained in subfields $c, $d, or $n.
$n - Number of meeting 
Number of a meeting that is entered under a corporate name.
$n - Number of part/section/meeting [610/710]
Number of a meeting that is entered under a corporate name.
|610||10$aUnited States.$bCongress$n(97th, 2nd session :$d1982).$bHouse.|
Can also contain a number designation for a part/section of a work used with a title in a name/title field. It can also contain a number designation for a part/section of an event, program, etc. used with a title of an event, program, etc. in a name/title field. Numbering is defined as an indication of sequencing in any form, (e.g., Part 1, Supplement A, Book two). For music, the serial, opus, or thematic index number, or date used as a number, is contained in subfield $n.
$p - Name of part/section [610/710]
Can contain a name designation of a part/section of a work used with a title in a name/title field. It can also contain a name designation of a part/section of an event, program, etc. used with a title of an event, program, etc. in a name/title field.
$s - Version [610/710]
Version, edition, etc., information used with a title of a work in a name/title field.
$t - Title [610/710]
Title page title of a work or the name of an event, program, etc. used in a name/title field.
$u - Affiliation
Affiliation or address of the corporate name.
$v - Form subdivision 
Form subdivision that designates a specific kind or genre of material as defined by the thesaurus being used. Subfield $v is appropriate only when a form subject subdivision is added to a corporate name or name/title to form an extended subject heading. Subfield $v is used for form terms when they function as indicated above. Subfield $x may be used if the terms function as general subdivisions. A form subdivision in subfield $v is generally the last subfield in the field. The subfield may be repeated if more than one form subdivision is used.
$x - General subdivision 
Subject subdivision that is not more appropriately contained in subfield $v (Form subdivision), subfield $y (Chronological subdivision) or subfield $z (Geographic subdivision). Subfield $x is appropriate only when a general topical subdivision is added to a name or a name/title field.
$y - Chronological subdivision 
Subject subdivision that represents a period of time. Subfield $y is appropriate only when a chronological subject subdivision is added to a name or a name/title field.
$z - Geographic subdivision 
Geographic subject subdivision. Subfield $z is appropriate only when a geographic subject subdivision is added to a name or a name/title field.
$0 - Authority record control number or standard number
$2 - Source of heading or term 
MARC code that identifies the thesaurus or authority file that is the source list from which the heading or term in a Subject Added Entry field was assigned. It is used only when the second indicator position contains value 7 (Source specified in subfield $2). Code from: Subject Heading and Term Source Codes.
$4 - Relator code
MARC code that specifies the relationship between a name and a community information entity. More than one relator code may be used if the corporate entity has more than one function. Code from: MARC Code List for Relators. The code is given after the name portion in name/title fields.
|110||1#$aUnited States.$bEnergy Research and Development Administration.$4fnd|
Relator terms, which also specify the relationship of a corporate body to a community information entity, are contained in subfield $e.
$6 - Linkage
$8 - Field link and sequence number
Ambiguous Headings - See Appendix D.
Punctuation - Fields 110, 610, and 710 end with a mark of punctuation or a closing parenthesis. If the final subfield is subfield $0, $2 or $4, the mark of punctuation or closing parenthesis precedes these subfields.
|110||2#$aOklahoma Council on Juvenile Delinquency.|
|110||2#$aMartin Marietta Corporation.$bSpace Systems Division.|
Name portion of a name/subordinate body or name/title field ends with a mark of punctuation. The mark of punctuation is placed inside a closing quotation mark.
Name or title portion followed by a subject subdivision does not end with a mark of punctuation unless the name or title portion ends with an abbreviation, initial/letter, or open date.
Spacing - No spaces are used in initialisms or personal name initials/letters.
|110||2#$aMetallurgical Society of AIME.$bNew Jersey Chapter.|
|110||2#$aJ.W.J. Headstart Program.|
One space is used between preceding and succeeding initials if an abbreviation consists of more than a single phrase (e.g., W. Va.).
Display Constant - Dash (-) that precedes a subject subdivision in an extended subject heading is not carried in the machine-readable record. It may be system generated as a display constant associated with the content of subfields $v, $x, $y, and $z.
Initial Articles - Initial articles (e.g., Der) occurring at the beginning of name heading fields are usually omitted in most languages (except when the intent is to file on the article).
|110||2#$aLos Angeles County Bar Association.|
Initial articles occurring at the beginning of the title and/or part portion of a name/title added entry (i.e., 610 or 710) are also omitted. Any diacritics and/or special characters occurring at the beginning of fields are retained. Note that such characters are usually ignored for purposes of sorting or filing.
In 2014, subfield $c was made repeatable.