Heat a large Dutch oven over medium-high heat. Add beef; cook 3 minutes or until browned, stirring to crumble. Remove beef from pan. Add onion, celery, and carrot to pan; cook 6 minutes or until tender, stirring occasionally. Add oregano, cumin, pepper, and garlic; cook 1 minute, stirring to combine. Return beef to pan. Add salt, broth, and chiles, stirring to combine; bring to a boil. Add macaroni; reduce heat, and simmer 8 minutes or until macaroni is tender.