I82.509 — Chronic embolism and thrombosis of unspecified deep veins of unspecified lower extremity
I82.509 is a billable, specific ICD-10-CM code for chronic embolism and thrombosis of unspecified deep veins of unspecified lower extremity. It is valid for submission on a claim.
Excludes1 inherited from the categories above I82.509
These are not written on I82.509, but they bind it: a note on a category applies to every code beneath it. Billing I82.509 with anything listed here is a denial.
Written on I82.50 — Chronic embolism and thrombosis of unspecified deep veins of lower extremity
Excludes2 inherited from the categories above I82.509
Also inherited, and the opposite of Excludes1: these conditions are not part of I82.509, but a patient can have both, so you may code both.
Risk adjustment
I82.509 risk-adjusts. Under the CMS-HCC V28 model it maps to this category:
- HCC 267 Deep Vein Thrombosis and Pulmonary Embolism0.294 RAF
Coefficient shown for the Community Non-dual Aged segment. A higher HCC in the same hierarchy will suppress this one, so capturing it does not always add score.
Medicare coverage
I82.509 is named in 8 Medicare coverage policies — 8 listing it as supporting medical necessity. Which of them applies to you depends on your Medicare contractor, and coverage genuinely differs by state.
- A60255Billing and Coding: MolDX: Genetic Testing for Hereditary Thrombophilia
- A60256Billing and Coding: MolDX: Genetic Testing for Hereditary Thrombophilia
- A60271Billing and Coding: MolDX: Genetic Testing for Hereditary Thrombophilia
- A60272Billing and Coding: MolDX: Genetic Testing for Hereditary Thrombophilia
Code history
I82.509 has not changed since FY2024 — no addition, revision or deletion across the three most recent ICD-10-CM releases.
Related codes at this level
Codes that share I82.50. If I82.509 is not quite right, the correct code is usually one of these.
Questions about I82.509
- Is I82.509 a billable ICD-10-CM code?
- Yes. I82.509 is a billable, specific ICD-10-CM code and is valid for submission on a claim.
- Where does I82.509 sit in the tabular list?
- Diseases of the circulatory system (I00-I99), in the block Diseases of veins, lymphatic vessels and lymph nodes, not elsewhere classified (I80-I89).
- What cannot be coded together with I82.509?
- I82.509 carries Excludes1 notes, which means the conditions they list can never be coded together with it on the same encounter. Some are written on the categories above I82.509 (I82.50, I82.5) and apply to it just the same.