diff --git a/proxyserver/src/main/java/edu/suffolk/litlab/efsp/docassemble/FilingInformationDocassembleJacksonDeserializer.java b/proxyserver/src/main/java/edu/suffolk/litlab/efsp/docassemble/FilingInformationDocassembleJacksonDeserializer.java
index 8ce45d3a..0741e99d 100644
--- a/proxyserver/src/main/java/edu/suffolk/litlab/efsp/docassemble/FilingInformationDocassembleJacksonDeserializer.java
+++ b/proxyserver/src/main/java/edu/suffolk/litlab/efsp/docassemble/FilingInformationDocassembleJacksonDeserializer.java
@@ -432,6 +432,9 @@ public FilingInformation fromNode(JsonNode node, InfoCollector collector) throws
     var maybeMax = getNumberMember(node, "max_fee_amount");
     entities.setMaxFeeAmount(parser.vetMaxAmount(maybeMax));
 
+    var maybeCauseOfAction = getStringMember(node, "cause_of_action_code");
+    entities.setCauseOfActionCode(maybeCauseOfAction);
+
     boolean contestedCase = false;
     JsonNode jsonContested = node.get("is_contested_case");
     if (jsonContested != null && jsonContested.isBoolean()) {
diff --git a/proxyserver/src/main/java/edu/suffolk/litlab/efsp/model/FilingInformation.java b/proxyserver/src/main/java/edu/suffolk/litlab/efsp/model/FilingInformation.java
index 5aed0856..5a91ed08 100644
--- a/proxyserver/src/main/java/edu/suffolk/litlab/efsp/model/FilingInformation.java
+++ b/proxyserver/src/main/java/edu/suffolk/litlab/efsp/model/FilingInformation.java
@@ -71,12 +71,16 @@ public class FilingInformation {
 
   private Optional<BigDecimal> amountInControversy = Optional.empty();
   private Optional<BigDecimal> maxFeeAmount = Optional.empty();
+
+  /** In TrueFiling AK, contains subject matter info (i.e. type of protection order sought). */
+  private Optional<String> causeOfActionCode = Optional.empty();
+
   private boolean contestedCase = false;
   private boolean outOfState = false;
   private EmailTemplates emailTemplates = new EmailTemplates();
 
   /**
-   * Gets all of the peole who are listed by filer ids in the filing docs. This corresponds to the
+   * Gets all of the people who are listed by filer ids in the filing docs. This corresponds to the
    * `users` variable in Docassemble interviews.
    *
    * @return The People who are filers in the filing documents
@@ -214,6 +218,10 @@ public Optional<BigDecimal> getMaxFeeAmount() {
     return maxFeeAmount;
   }
 
+  public Optional<String> getCauseOfActionCode() {
+    return causeOfActionCode;
+  }
+
   public boolean isContestedCase() {
     return contestedCase;
   }
@@ -318,6 +326,10 @@ public void setMaxFeeAmount(Optional<BigDecimal> maxFeeAmount) {
     this.maxFeeAmount = maxFeeAmount;
   }
 
+  public void setCauseOfActionCode(Optional<String> causeOfActionCode) {
+    this.causeOfActionCode = causeOfActionCode;
+  }
+
   public void setIsContestedCase(boolean isContestedCase) {
     this.contestedCase = isContestedCase;
   }
diff --git a/proxyserver/src/main/java/edu/suffolk/litlab/efsp/truefiling/ecf4/EcfCaseTypeFactory.java b/proxyserver/src/main/java/edu/suffolk/litlab/efsp/truefiling/ecf4/EcfCaseTypeFactory.java
index eda1bbee..4949044f 100644
--- a/proxyserver/src/main/java/edu/suffolk/litlab/efsp/truefiling/ecf4/EcfCaseTypeFactory.java
+++ b/proxyserver/src/main/java/edu/suffolk/litlab/efsp/truefiling/ecf4/EcfCaseTypeFactory.java
@@ -148,7 +148,9 @@ public record ComboCaseCodes(
               info.getCaseDocketNumber(),
               comboCodes.cat(),
               info.getPreviousCaseId(),
-              info.getAmountInControversy());
+              info.getAmountInControversy(),
+              // TODO(brycew): better cause of action default?
+              info.getCauseOfActionCode().orElse(""));
     } else if (ecftype == EcfCaseTypes.DomesticCase) {
       myCase =
           makeDomesticCaseType(
@@ -437,7 +439,8 @@ private JAXBElement<CivilCaseType> makeCivilCaseType(
       Optional<String> caseDocketId,
       NameAndCode caseCategory,
       Optional<String> caseTrackingId,
-      Optional<BigDecimal> amountInControversy) {
+      Optional<BigDecimal> amountInControversy,
+      String causeOfActionCode) {
     var ecfCivilObjFac =
         new oasis.names.tc.legalxml_courtfiling.schema.xsd.civilcase_4.ObjectFactory();
     var ecfCommonObjFac =
@@ -456,7 +459,8 @@ private JAXBElement<CivilCaseType> makeCivilCaseType(
         });
     c.getRest().add(caseAug);
     c.getRest().add(ecfAug);
-    c.getRest().add(ecfCommonObjFac.createCauseOfActionCode(Ecf4Helper.convertText("CIV750LT")));
+    c.getRest()
+        .add(ecfCommonObjFac.createCauseOfActionCode(Ecf4Helper.convertText(causeOfActionCode)));
     c.getRest().add(ecfCivilObjFac.createClassActionIndicator(Ecf4Helper.convertBool(false)));
     c.getRest().add(ecfCivilObjFac.createJuryDemandIndicator(Ecf4Helper.convertBool(false)));
     c.getRest().add(ecfCivilObjFac.createReliefTypeCode(new TextType()));