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J43.9 — Emphysema, unspecified
J43.9
What this code means
Emphysema is lung damage in which the tiny air sacs are destroyed, trapping air and causing progressive breathlessness.
Also called: emphysema.
When this code is used
Used for emphysema when the type is not specified.
Where it sits in ICD-10-CM
Code J43.9 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.
Related symptoms
Related anatomy
Watch: related videos
Frequently asked questions
What is ICD-10-CM code J43.9?
J43.9 is the ICD-10-CM diagnosis code for “Emphysema, unspecified”. Emphysema is lung damage in which the tiny air sacs are destroyed, trapping air and causing progressive breathlessness.
When is code J43.9 used?
Used for emphysema when the type is not specified. 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.