This code system http://terminology.hl7.org/CodeSystem/modifiers defines the following codes:

Code Display Definition
a Repair of prior service or installation Repair of prior service or installation.
b Temporary service or installation Temporary service or installation.
c TMJ treatment Treatment associated with TMJ.
e Implant or associated with an implant Implant or associated with an implant.
rooh Rush or Outside of office hours A Rush service or service performed outside of normal office hours.
x None None.
<status value="draft"/> <experimental value="false"/> <date value="2025-09-13T16:38:45-04:00"/> <publisher value="Financial Management"/> <contact> <name value="Financial Management"/> <telecom> <system value="url"/> <value value="http://www.hl7.org/Special/committees/fm"/> </telecom> </contact> <description value="This value set includes sample Modifier type codes."/> <jurisdiction> <coding> <system value="http://unstats.un.org/unsd/methods/m49/m49.htm"/> <code value="001"/> <display value="World"/> </coding> </jurisdiction> <copyright value="This is an example set."/> <caseSensitive value="true"/> <content value="complete"/> <concept> <code value="a"/> <display value="Repair of prior service or installation"/> <definition value="Repair of prior service or installation."/> </concept> <concept> <code value="b"/> <display value="Temporary service or installation"/> <definition value="Temporary service or installation."/> </concept> <concept> <code value="c"/> <display value="TMJ treatment"/> <definition value="Treatment associated with TMJ."/> </concept> <concept> <code value="e"/> <display value="Implant or associated with an implant"/> <definition value="Implant or associated with an implant."/> </concept> <concept> <code value="rooh"/> <display value="Rush or Outside of office hours"/> <definition value="A Rush service or service performed outside of normal office hours."/> </concept> <concept> <code value="x"/> <display value="None"/> <definition value="None."/> </concept> </CodeSystem>