diff --git a/toolchain/check/node_stack.h b/toolchain/check/node_stack.h
index b4bb8b87dc9d5..6fccf072fe681 100644
--- a/toolchain/check/node_stack.h
+++ b/toolchain/check/node_stack.h
@@ -472,7 +472,176 @@ class NodeStack {
         case Parse::NodeKind::VariableInitializer:
         case Parse::NodeKind::VariableIntroducer:
           return Id::Kind::None;
-        default:
+        case Parse::NodeKind::AbstractModifier:
+        case Parse::NodeKind::AdaptDecl:
+        case Parse::NodeKind::AdaptIntroducer:
+        case Parse::NodeKind::Alias:
+        case Parse::NodeKind::AliasInitializer:
+        case Parse::NodeKind::AliasIntroducer:
+        case Parse::NodeKind::ArrayExpr:
+        case Parse::NodeKind::ArrayExprStart:
+        case Parse::NodeKind::AutoTypeLiteral:
+        case Parse::NodeKind::BaseColon:
+        case Parse::NodeKind::BaseDecl:
+        case Parse::NodeKind::BaseIntroducer:
+        case Parse::NodeKind::BaseModifier:
+        case Parse::NodeKind::BaseName:
+        case Parse::NodeKind::BoolLiteralFalse:
+        case Parse::NodeKind::BoolLiteralTrue:
+        case Parse::NodeKind::BoolTypeLiteral:
+        case Parse::NodeKind::BreakStatement:
+        case Parse::NodeKind::BreakStatementStart:
+        case Parse::NodeKind::BuiltinFunctionDefinition:
+        case Parse::NodeKind::CallExpr:
+        case Parse::NodeKind::CallExprComma:
+        case Parse::NodeKind::ChoiceAlternativeListComma:
+        case Parse::NodeKind::ChoiceDefinition:
+        case Parse::NodeKind::ChoiceDefinitionStart:
+        case Parse::NodeKind::ChoiceIntroducer:
+        case Parse::NodeKind::ClassDecl:
+        case Parse::NodeKind::ClassDefinition:
+        case Parse::NodeKind::CodeBlock:
+        case Parse::NodeKind::ContinueStatement:
+        case Parse::NodeKind::ContinueStatementStart:
+        case Parse::NodeKind::DefaultModifier:
+        case Parse::NodeKind::DefaultSelfImplAs:
+        case Parse::NodeKind::DesignatorExpr:
+        case Parse::NodeKind::EmptyDecl:
+        case Parse::NodeKind::ExportDecl:
+        case Parse::NodeKind::ExportIntroducer:
+        case Parse::NodeKind::ExportModifier:
+        case Parse::NodeKind::ExprStatement:
+        case Parse::NodeKind::ExtendModifier:
+        case Parse::NodeKind::ExternModifier:
+        case Parse::NodeKind::ExternModifierWithLibrary:
+        case Parse::NodeKind::FileEnd:
+        case Parse::NodeKind::FileStart:
+        case Parse::NodeKind::FinalModifier:
+        case Parse::NodeKind::FloatTypeLiteral:
+        case Parse::NodeKind::ForHeader:
+        case Parse::NodeKind::ForHeaderStart:
+        case Parse::NodeKind::ForIn:
+        case Parse::NodeKind::ForStatement:
+        case Parse::NodeKind::FunctionDecl:
+        case Parse::NodeKind::FunctionDefinition:
+        case Parse::NodeKind::IdentifierName:
+        case Parse::NodeKind::IdentifierNameExpr:
+        case Parse::NodeKind::IfConditionStart:
+        case Parse::NodeKind::IfExprElse:
+        case Parse::NodeKind::IfStatement:
+        case Parse::NodeKind::ImplDecl:
+        case Parse::NodeKind::ImplDefinition:
+        case Parse::NodeKind::ImplModifier:
+        case Parse::NodeKind::ImportDecl:
+        case Parse::NodeKind::ImportIntroducer:
+        case Parse::NodeKind::IndexExpr:
+        case Parse::NodeKind::IndexExprStart:
+        case Parse::NodeKind::InfixOperatorAmp:
+        case Parse::NodeKind::InfixOperatorAmpEqual:
+        case Parse::NodeKind::InfixOperatorAs:
+        case Parse::NodeKind::InfixOperatorCaret:
+        case Parse::NodeKind::InfixOperatorCaretEqual:
+        case Parse::NodeKind::InfixOperatorEqual:
+        case Parse::NodeKind::InfixOperatorEqualEqual:
+        case Parse::NodeKind::InfixOperatorExclaimEqual:
+        case Parse::NodeKind::InfixOperatorGreater:
+        case Parse::NodeKind::InfixOperatorGreaterEqual:
+        case Parse::NodeKind::InfixOperatorGreaterGreater:
+        case Parse::NodeKind::InfixOperatorGreaterGreaterEqual:
+        case Parse::NodeKind::InfixOperatorLess:
+        case Parse::NodeKind::InfixOperatorLessEqual:
+        case Parse::NodeKind::InfixOperatorLessEqualGreater:
+        case Parse::NodeKind::InfixOperatorLessLess:
+        case Parse::NodeKind::InfixOperatorLessLessEqual:
+        case Parse::NodeKind::InfixOperatorMinus:
+        case Parse::NodeKind::InfixOperatorMinusEqual:
+        case Parse::NodeKind::InfixOperatorPercent:
+        case Parse::NodeKind::InfixOperatorPercentEqual:
+        case Parse::NodeKind::InfixOperatorPipe:
+        case Parse::NodeKind::InfixOperatorPipeEqual:
+        case Parse::NodeKind::InfixOperatorPlus:
+        case Parse::NodeKind::InfixOperatorPlusEqual:
+        case Parse::NodeKind::InfixOperatorSlash:
+        case Parse::NodeKind::InfixOperatorSlashEqual:
+        case Parse::NodeKind::InfixOperatorStar:
+        case Parse::NodeKind::InfixOperatorStarEqual:
+        case Parse::NodeKind::InterfaceDecl:
+        case Parse::NodeKind::InterfaceDefinition:
+        case Parse::NodeKind::IntLiteral:
+        case Parse::NodeKind::IntTypeLiteral:
+        case Parse::NodeKind::InvalidParse:
+        case Parse::NodeKind::InvalidParseStart:
+        case Parse::NodeKind::InvalidParseSubtree:
+        case Parse::NodeKind::LetDecl:
+        case Parse::NodeKind::LibraryDecl:
+        case Parse::NodeKind::LibraryIntroducer:
+        case Parse::NodeKind::LibrarySpecifier:
+        case Parse::NodeKind::MatchCase:
+        case Parse::NodeKind::MatchCaseEqualGreater:
+        case Parse::NodeKind::MatchCaseGuard:
+        case Parse::NodeKind::MatchCaseGuardIntroducer:
+        case Parse::NodeKind::MatchCaseGuardStart:
+        case Parse::NodeKind::MatchCaseIntroducer:
+        case Parse::NodeKind::MatchCaseStart:
+        case Parse::NodeKind::MatchCondition:
+        case Parse::NodeKind::MatchConditionStart:
+        case Parse::NodeKind::MatchDefault:
+        case Parse::NodeKind::MatchDefaultEqualGreater:
+        case Parse::NodeKind::MatchDefaultIntroducer:
+        case Parse::NodeKind::MatchDefaultStart:
+        case Parse::NodeKind::MatchIntroducer:
+        case Parse::NodeKind::MatchStatement:
+        case Parse::NodeKind::MatchStatementStart:
+        case Parse::NodeKind::MemberAccessExpr:
+        case Parse::NodeKind::NamedConstraintDecl:
+        case Parse::NodeKind::NamedConstraintDefinition:
+        case Parse::NodeKind::NamedConstraintDefinitionStart:
+        case Parse::NodeKind::NamedConstraintIntroducer:
+        case Parse::NodeKind::NameQualifier:
+        case Parse::NodeKind::Namespace:
+        case Parse::NodeKind::NamespaceStart:
+        case Parse::NodeKind::PackageDecl:
+        case Parse::NodeKind::PackageExpr:
+        case Parse::NodeKind::PackageIntroducer:
+        case Parse::NodeKind::PackageName:
+        case Parse::NodeKind::ParenExpr:
+        case Parse::NodeKind::ParenExprStart:
+        case Parse::NodeKind::PatternListComma:
+        case Parse::NodeKind::Placeholder:
+        case Parse::NodeKind::PointerMemberAccessExpr:
+        case Parse::NodeKind::PostfixOperatorStar:
+        case Parse::NodeKind::PrefixOperatorAmp:
+        case Parse::NodeKind::PrefixOperatorCaret:
+        case Parse::NodeKind::PrefixOperatorConst:
+        case Parse::NodeKind::PrefixOperatorMinus:
+        case Parse::NodeKind::PrefixOperatorMinusMinus:
+        case Parse::NodeKind::PrefixOperatorNot:
+        case Parse::NodeKind::PrefixOperatorPlusPlus:
+        case Parse::NodeKind::PrefixOperatorStar:
+        case Parse::NodeKind::PrivateModifier:
+        case Parse::NodeKind::ProtectedModifier:
+        case Parse::NodeKind::RealLiteral:
+        case Parse::NodeKind::ReturnStatement:
+        case Parse::NodeKind::SelfTypeName:
+        case Parse::NodeKind::SelfTypeNameExpr:
+        case Parse::NodeKind::SelfValueNameExpr:
+        case Parse::NodeKind::ShortCircuitOperatorAnd:
+        case Parse::NodeKind::ShortCircuitOperatorOr:
+        case Parse::NodeKind::StringLiteral:
+        case Parse::NodeKind::StringTypeLiteral:
+        case Parse::NodeKind::StructComma:
+        case Parse::NodeKind::StructFieldDesignator:
+        case Parse::NodeKind::StructLiteral:
+        case Parse::NodeKind::StructTypeLiteral:
+        case Parse::NodeKind::Template:
+        case Parse::NodeKind::TupleLiteral:
+        case Parse::NodeKind::TupleLiteralComma:
+        case Parse::NodeKind::TypeImplAs:
+        case Parse::NodeKind::TypeTypeLiteral:
+        case Parse::NodeKind::UnsignedIntTypeLiteral:
+        case Parse::NodeKind::VariableDecl:
+        case Parse::NodeKind::VirtualModifier:
+        case Parse::NodeKind::WhileStatement:
           return Id::Kind::Invalid;
       }
     };