J44.0 — Chronic obstructive pulmonary disease with (acute) lower respiratory infection
J44.0

What this code means
Chronic obstructive pulmonary disease (COPD) occurring together with an acute lower respiratory infection such as bronchitis or pneumonia.
Also called: copd with acute lower respiratory infection.
When this code is used
Used for COPD with acute lower respiratory infection.
Where it sits in ICD-10-CM
Code J44.0 belongs to Chapter 10: Diseases of the respiratory system, which covers codes J00–J99 in the FY2027 ICD-10-CM tabular list. The official description above is copied verbatim from the CDC/NCHS FY2027 code file.
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Frequently asked questions
What is ICD-10-CM code J44.0?
J44.0 is the ICD-10-CM diagnosis code for “Chronic obstructive pulmonary disease with (acute) lower respiratory infection”. Chronic obstructive pulmonary disease (COPD) occurring together with an acute lower respiratory infection such as bronchitis or pneumonia.
When is code J44.0 used?
Used for COPD with acute lower respiratory infection. It belongs to Chapter 10 of ICD-10-CM (Diseases of the respiratory system).
This guide explains ICD-10-CM codes in plain language for patients, students and other readers. It is educational information only — not coding, billing or medical advice. The code recorded for any real encounter is assigned from the full clinical documentation by the treating team and qualified coders, and only they can decide which code fits a specific case.