I82.409 — Acute embolism and thrombosis of unspecified deep veins of unspecified lower extremity
I82.409

What this code means
Acute deep vein thrombosis (DVT): a fresh blood clot in a deep vein of the leg, with vein and side not specified.
Also called: deep vein thrombosis, dvt, acute deep vein thrombosis.
When this code is used
Used for acute embolism and thrombosis of unspecified deep veins of an unspecified lower extremity.
Where it sits in ICD-10-CM
Code I82.409 belongs to Chapter 9: Diseases of the circulatory system, which covers codes I00–I99 in the FY2027 ICD-10-CM tabular list. The official description above is copied verbatim from the CDC/NCHS FY2027 code file.
Related symptoms
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Frequently asked questions
What is ICD-10-CM code I82.409?
I82.409 is the ICD-10-CM diagnosis code for “Acute embolism and thrombosis of unspecified deep veins of unspecified lower extremity”. Acute deep vein thrombosis (DVT): a fresh blood clot in a deep vein of the leg, with vein and side not specified.
When is code I82.409 used?
Used for acute embolism and thrombosis of unspecified deep veins of an unspecified lower extremity. It belongs to Chapter 9 of ICD-10-CM (Diseases of the circulatory 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.
More codes in Chapter 9
I10 — Essential (primary) hypertension
I11.0 — Hypertensive heart disease with heart failure
I11.9 — Hypertensive heart disease without heart failure
I12.0 — Hypertensive chronic kidney disease with stage 5 chronic kidney disease or end stage renal disease
I12.9 — Hypertensive chronic kidney disease with stage 1 through stage 4 chronic kidney disease, or unspecified chronic kidney disease
I13.0 — Hypertensive heart and chronic kidney disease with heart failure and stage 1 through stage 4 chronic kidney disease, or unspecified chronic kidney disease