This document provides guidance on chronic obstructive pulmonary disease (COPD) from NICE. It discusses the epidemiology of COPD, defining features such as airflow obstruction. It recommends diagnosing COPD using spirometry and assessing severity based on lung function tests. The document provides guidance on managing stable COPD through smoking cessation support, inhaled therapies, pulmonary rehabilitation, and multidisciplinary care. It also covers managing exacerbations and end-stage COPD.