International Classification of Diseases (ICD) code for COPD exacerbation. It denotes an acute worsening of respiratory symptoms in patients with COPD, characterized by increased shortness of breath, coughing, and sputum production. ICD code J44.11 is used for acute exacerbation of chronic bronchitis, while J44.10 indicates acute exacerbation of severe COPD. This code is essential in medical documentation to accurately record the severity and type of COPD exacerbation, facilitating appropriate treatment and tracking of patient outcomes.