diff --git a/src/main/groovy/projects/dktk/v2/tnmp.groovy b/src/main/groovy/projects/dktk/v2/tnmp.groovy
index 2bdfd05b..a7c4f05a 100644
--- a/src/main/groovy/projects/dktk/v2/tnmp.groovy
+++ b/src/main/groovy/projects/dktk/v2/tnmp.groovy
@@ -106,7 +106,7 @@ observation {
       code {
         coding {
           system = "http://loinc.org"
-          code = isClinical ? "201906-3" : "21900-6"
+          code = isClinical ? "21906-3" : "21900-6"
         }
       }
       valueCodeableConcept {