ICD-10 Code J44.1 – Chronic obstructive pulmonary disease with (acute) exacerbation (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code J44.1 – Chronic obstructive pulmonary disease with (acute) exacerbation
What it is
This code identifies COPD that has worsened acutely beyond the patient’s usual baseline. It is used when the record shows an exacerbation of chronic obstructive pulmonary disease.
Clinical signs
Common findings include increased dyspnea, cough, sputum production, wheezing, or chest tightness. Clinical features vary; refer to documentation.
When to use this code
Use J44.1 when the clinician documents COPD with an acute exacerbation, flare, or worsening episode. It may apply in outpatient, emergency, or inpatient records when the diagnosis is clearly stated. Check documentation if another cause of respiratory decline is emphasized.
Do not use for
Do not use this code for stable COPD without exacerbation. If the record describes asthma, bronchitis, or another primary condition instead, code that documented diagnosis rather than assuming COPD exacerbation.
Coding tip
Look for the exact phrase “acute exacerbation” or equivalent wording in the provider note before assigning J44.1.