diff --git a/public/app/plugins/datasource/prometheus/promql.ts b/public/app/plugins/datasource/prometheus/promql.ts
index 1400466551d..681b481d75e 100644
--- a/public/app/plugins/datasource/prometheus/promql.ts
+++ b/public/app/plugins/datasource/prometheus/promql.ts
@@ -436,6 +436,10 @@ const tokenizer: Grammar = {
       },
     },
   ],
+  idList: {
+    pattern: /\d+(\|\d+)+/,
+    alias: 'number',
+  },
   number: /\b-?\d+((\.\d*)?([eE][+-]?\d+)?)?\b/,
   operator: new RegExp(`/[-+*/=%^~]|&&?|\\|?\\||!=?|<(?:=>?|<|>)?|>[>=]?|\\b(?:${OPERATORS.join('|')})\\b`, 'i'),
   punctuation: /[{};()`,.]/,