ICD-10-CM > J00-J99 > J40-J4A > J44 > J44.1 J44.1 Chronic obstructive pulmonary disease with (acute) exacerbation Billable/Specific Copy Code Copy Description Applicable To Decompensated COPDDecompensated COPD with (acute) exacerbation Type 2 Excludes chronic obstructive pulmonary disease [COPD] with acute bronchitis (J44.0)lung diseases due to external agents (J60-J70)