diff --git a/pom.xml b/pom.xml
index 65940ef..c304c61 100644
--- a/pom.xml
+++ b/pom.xml
@@ -155,6 +155,12 @@
             <version>2.3</version>
             <scope>test</scope>
         </dependency>
+        <dependency>
+            <groupId>log4j</groupId>
+            <artifactId>log4j</artifactId>
+            <version>1.2.17</version>
+            <scope>test</scope>
+        </dependency>
     </dependencies>
 
     <build>
diff --git a/src/main/java/DNPM/services/systemtherapie/DefaultSystemtherapieService.java b/src/main/java/DNPM/services/systemtherapie/DefaultSystemtherapieService.java
index 7c7e2b6..377e3d9 100644
--- a/src/main/java/DNPM/services/systemtherapie/DefaultSystemtherapieService.java
+++ b/src/main/java/DNPM/services/systemtherapie/DefaultSystemtherapieService.java
@@ -2,11 +2,12 @@ package DNPM.services.systemtherapie;
 
 import DNPM.services.SettingsService;
 import de.itc.onkostar.api.IOnkostarApi;
+import de.itc.onkostar.api.Patient;
 import de.itc.onkostar.api.Procedure;
+import de.itc.onkostar.api.ProcedureEditStateType;
 
-import java.util.ArrayList;
-import java.util.List;
-import java.util.Map;
+import java.util.*;
+import java.util.stream.Collectors;
 
 /**
  * Standardimplementierung des Systemtherapieservices
@@ -15,6 +16,8 @@ import java.util.Map;
  */
 public class DefaultSystemtherapieService implements SystemtherapieService {
 
+    private static final String ECOG_FIELD = "ECOGvorTherapie";
+
     private final IOnkostarApi onkostarApi;
 
     private final SettingsService settingsService;
@@ -51,6 +54,43 @@ public class DefaultSystemtherapieService implements SystemtherapieService {
         return new OsSystemischeTherapieToProzedurwerteMapper();
     }
 
+    /**
+     * Ermittelt den letzten bekannten ECOG-Status aus allen Systemtherapieformularen des Patienten
+     *
+     * @param patient Der zu verwendende Patient
+     * @return Der ECOG-Status als String oder leeres Optional
+     */
+    @Override
+    public Optional<String> latestEcogStatus(Patient patient) {
+        return ecogSatus(patient).stream()
+                .max(Comparator.comparing(EcogStatusWithDate::getDate))
+                .map(EcogStatusWithDate::getStatus);
+    }
+
+    /**
+     * Ermittelt jeden bekannten ECOG-Status aus allen Systemtherapieformularen des Patienten
+     *
+     * @param patient Der zu verwendende Patient
+     * @return Eine Liste mit Datum und ECOG-Status als String
+     */
+    @Override
+    public List<EcogStatusWithDate> ecogSatus(Patient patient) {
+        return patient.getDiseases().stream()
+                .flatMap(disease -> onkostarApi.getProceduresForDiseaseByForm(disease.getId(), getFormName()).stream())
+                .filter(procedure -> procedure.getEditState() == ProcedureEditStateType.COMPLETED)
+                .filter(procedure -> null != procedure.getStartDate())
+                .sorted(Comparator.comparing(Procedure::getStartDate))
+                .map(procedure -> {
+                    try {
+                        return new EcogStatusWithDate(procedure.getStartDate(), procedure.getValue(ECOG_FIELD).getString());
+                    } catch (IllegalArgumentException e) {
+                        return null;
+                    }
+                })
+                .filter(Objects::nonNull)
+                .collect(Collectors.toList());
+    }
+
     private String getFormName() {
         return settingsService
                 .getSetting("systemtherapieform")
diff --git a/src/main/java/DNPM/services/systemtherapie/SystemtherapieService.java b/src/main/java/DNPM/services/systemtherapie/SystemtherapieService.java
index 00b7a6d..0102fc6 100644
--- a/src/main/java/DNPM/services/systemtherapie/SystemtherapieService.java
+++ b/src/main/java/DNPM/services/systemtherapie/SystemtherapieService.java
@@ -1,9 +1,13 @@
 package DNPM.services.systemtherapie;
 
+import de.itc.onkostar.api.Patient;
 import de.itc.onkostar.api.Procedure;
+import org.springframework.util.Assert;
 
+import java.util.Date;
 import java.util.List;
 import java.util.Map;
+import java.util.Optional;
 
 /**
  * Service für Systemtherapieformulare
@@ -25,4 +29,56 @@ public interface SystemtherapieService {
      */
     ProzedurToProzedurwerteMapper prozedurToProzedurwerteMapper(Procedure procedure);
 
+    /**
+     * Ermittelt den letzten bekannten ECOG-Status aus allen Systemtherapieformularen des Patienten
+     * @param patient Der zu verwendende Patient
+     * @return Der ECOG-Status als String oder leeres Optional
+     */
+    Optional<String> latestEcogStatus(Patient patient);
+
+    /**
+     * Ermittelt jeden bekannten ECOG-Status aus allen Systemtherapieformularen des Patienten
+     * @param patient Der zu verwendende Patient
+     * @return Eine Liste mit Datum und ECOG-Status als String
+     */
+    List<EcogStatusWithDate> ecogSatus(Patient patient);
+
+    /**
+     * Datenklasse zum Abbilden des ECOG-Status und Datum
+     */
+    class EcogStatusWithDate {
+        private Date date;
+        private String status;
+
+        public EcogStatusWithDate(Date date, String status) {
+            Assert.notNull(date, "Date cannot be null");
+            Assert.hasText(status, "Status cannot be empty String");
+            Assert.isTrue(isValidEcogCode(status), "Not a valid ADT.LeistungszustandECOG code");
+            this.date = date;
+            this.status = status;
+        }
+
+        private boolean isValidEcogCode(String status) {
+            switch (status) {
+                case "1":
+                case "2":
+                case "3":
+                case "4":
+                case "5":
+                case "U":
+                    return true;
+                default:
+                    return false;
+            }
+        }
+
+        public Date getDate() {
+            return date;
+        }
+
+        public String getStatus() {
+            return status;
+        }
+    }
+
 }
diff --git a/src/test/java/DNPM/services/systemtherapie/DefaultSystemtherapieServiceTest.java b/src/test/java/DNPM/services/systemtherapie/DefaultSystemtherapieServiceTest.java
index 40ce315..7852187 100644
--- a/src/test/java/DNPM/services/systemtherapie/DefaultSystemtherapieServiceTest.java
+++ b/src/test/java/DNPM/services/systemtherapie/DefaultSystemtherapieServiceTest.java
@@ -1,8 +1,7 @@
 package DNPM.services.systemtherapie;
 
 import DNPM.services.SettingsService;
-import de.itc.onkostar.api.IOnkostarApi;
-import de.itc.onkostar.api.Procedure;
+import de.itc.onkostar.api.*;
 import org.junit.jupiter.api.BeforeEach;
 import org.junit.jupiter.api.Test;
 import org.junit.jupiter.api.extension.ExtendWith;
@@ -12,6 +11,7 @@ import org.mockito.ArgumentCaptor;
 import org.mockito.Mock;
 import org.mockito.junit.jupiter.MockitoExtension;
 
+import java.time.Instant;
 import java.util.*;
 
 import static org.assertj.core.api.Assertions.assertThat;
@@ -94,4 +94,40 @@ class DefaultSystemtherapieServiceTest {
                 .isExactlyInstanceOf(ArrayList.class)
                 .hasSize(1);
     }
+
+    @Test
+    void testShouldReturnListOfEcogStatusWithDate() {
+        doAnswer(invocationOnMock -> {
+            var disease = new Disease(onkostarApi);
+            disease.setId(1);
+            return List.of(disease);
+        }).when(this.onkostarApi).getDiseasesByPatientId(anyInt());
+
+        doAnswer(invocationOnMock -> {
+            var procedure1 = new Procedure(onkostarApi);
+            procedure1.setId(1);
+            procedure1.setFormName("OS.Systemische Therapie");
+            procedure1.setStartDate(Date.from(Instant.parse("2023-07-01T06:00:00Z")));
+            procedure1.setEditState(ProcedureEditStateType.COMPLETED);
+            procedure1.setValue("ECOGvorTherapie", new Item("ECOGvorTherapie", 1));
+
+            var procedure2 = new Procedure(onkostarApi);
+            procedure2.setId(2);
+            procedure2.setFormName("OS.Systemische Therapie");
+            procedure2.setStartDate(Date.from(Instant.parse("2023-07-12T06:00:00Z")));
+            procedure2.setEditState(ProcedureEditStateType.COMPLETED);
+            procedure2.setValue("ECOGvorTherapie", new Item("ECOGvorTherapie", 2));
+            return List.of(procedure1, procedure2);
+        }).when(this.onkostarApi).getProceduresForDiseaseByForm(anyInt(), anyString());
+
+        var patient = new Patient(onkostarApi);
+        patient.setId(1);
+
+        var actual = service.ecogSatus(patient);
+
+        assertThat(actual)
+                .isNotNull()
+                .isExactlyInstanceOf(ArrayList.class)
+                .hasSize(2);
+    }
 }