diff --git a/src/HL7/Segments/MSH.php b/src/HL7/Segments/MSH.php
index 0ef97e0..b196096 100644
--- a/src/HL7/Segments/MSH.php
+++ b/src/HL7/Segments/MSH.php
@@ -293,7 +293,7 @@ public function getProcessingId(int $position = 11)
     /**
      * Get HL7 version, e.g. 2.1, 2.3, 3.0 etc.
      */
-    public function getVersionId(int $position = 12): string
+    public function getVersionId(int $position = 12): string|array
     {
         return $this->getField($position);
     }
diff --git a/tests/Segments/MSHTest.php b/tests/Segments/MSHTest.php
index 0970213..930a9cd 100644
--- a/tests/Segments/MSHTest.php
+++ b/tests/Segments/MSHTest.php
@@ -58,6 +58,17 @@ public function more_than_one_character_as_field_separator_is_not_accepted(): vo
         self::assertSame('|', $msh->getField(1), 'MSH Field sep field (MSH(1))');
     }
 
+    /** @test */
+    public function version_id_can_be_string_or_array_for_v2_7_onwards(): void
+    {
+        $msh = new MSH();
+        $msh->setVersionId('2.3');
+        self::assertSame('2.3', $msh->getVersionId());
+
+        $msh->setVersionId(['2.7', 'NZL', '1.0']);
+        self::assertSame(['2.7', 'NZL', '1.0'], $msh->getVersionId());
+    }
+
     /** @test */
     public function index_2_in_MSH_accepts_only_4_character_strings(): void
     {