diff --git a/crates/ruff_linter/src/checkers/noqa.rs b/crates/ruff_linter/src/checkers/noqa.rs
index 926c7dcfb8..7cf58a5def 100644
--- a/crates/ruff_linter/src/checkers/noqa.rs
+++ b/crates/ruff_linter/src/checkers/noqa.rs
@@ -130,6 +130,7 @@ pub(crate) fn check_noqa(
                         let edit = delete_comment(directive.range(), locator);
                         let mut diagnostic = context
                             .report_diagnostic(UnusedNOQA { codes: None }, directive.range());
+                        diagnostic.add_primary_tag(ruff_db::diagnostic::DiagnosticTag::Unnecessary);
                         diagnostic.set_fix(Fix::safe_edit(edit));
                     }
                 }
@@ -226,6 +227,7 @@ pub(crate) fn check_noqa(
                             },
                             directive.range(),
                         );
+                        diagnostic.add_primary_tag(ruff_db::diagnostic::DiagnosticTag::Unnecessary);
                         diagnostic.set_fix(Fix::safe_edit(edit));
                     }
                 }
diff --git a/crates/ruff_linter/src/rules/pandas_vet/rules/subscript.rs b/crates/ruff_linter/src/rules/pandas_vet/rules/subscript.rs
index 30fc920952..cda65b6554 100644
--- a/crates/ruff_linter/src/rules/pandas_vet/rules/subscript.rs
+++ b/crates/ruff_linter/src/rules/pandas_vet/rules/subscript.rs
@@ -165,16 +165,17 @@ pub(crate) fn subscript(checker: &Checker, value: &Expr, expr: &Expr) {
     match attr.as_str() {
         // PD007
         "ix" if checker.is_rule_enabled(Rule::PandasUseOfDotIx) => {
-            checker.report_diagnostic(PandasUseOfDotIx, range)
+            let mut diagnostic = checker.report_diagnostic(PandasUseOfDotIx, range);
+            diagnostic.add_primary_tag(ruff_db::diagnostic::DiagnosticTag::Deprecated);
         }
         // PD008
         "at" if checker.is_rule_enabled(Rule::PandasUseOfDotAt) => {
-            checker.report_diagnostic(PandasUseOfDotAt, range)
+            checker.report_diagnostic(PandasUseOfDotAt, range);
         }
         // PD009
         "iat" if checker.is_rule_enabled(Rule::PandasUseOfDotIat) => {
-            checker.report_diagnostic(PandasUseOfDotIat, range)
+            checker.report_diagnostic(PandasUseOfDotIat, range);
         }
-        _ => return,
-    };
+        _ => (),
+    }
 }
diff --git a/crates/ruff_linter/src/rules/pyflakes/rules/redefined_while_unused.rs b/crates/ruff_linter/src/rules/pyflakes/rules/redefined_while_unused.rs
index 184a88f408..3c13941f6a 100644
--- a/crates/ruff_linter/src/rules/pyflakes/rules/redefined_while_unused.rs
+++ b/crates/ruff_linter/src/rules/pyflakes/rules/redefined_while_unused.rs
@@ -191,6 +191,7 @@ pub(crate) fn redefined_while_unused(checker: &Checker, scope_id: ScopeId, scope
                 },
                 binding.range(),
             );
+            diagnostic.add_primary_tag(ruff_db::diagnostic::DiagnosticTag::Unnecessary);
 
             diagnostic.secondary_annotation(
                 format_args!("previous definition of `{name}` here"),