MCMCB Pro
I80.203

I80.203Phlebitis and thrombophlebitis of unspecified deep vessels of lower extremities, bilateral

Billable / specific codeICD-10-CMbilateral

I80.203 is a billable, specific ICD-10-CM code for phlebitis and thrombophlebitis of unspecified deep vessels of lower extremities, bilateral. It is valid for submission on a claim.

Risk adjustment

I80.203 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

I80.203 is named in 9 Medicare coverage policies 9 listing it as supporting medical necessity. Which of them applies to you depends on your Medicare contractor, and coverage genuinely differs by state.

  • A52996Billing and Coding: Routine Foot Care
  • A56232Billing and Coding: Foot Care
  • A56680Billing and Coding: Routine Foot Care
  • A56775Billing and Coding: Magnetic Resonance Angiography

Related codes at this level

Codes that share I80.20. If I80.203 is not quite right, the correct code is usually one of these.

Questions about I80.203

Is I80.203 a billable ICD-10-CM code?
Yes. I80.203 is a billable, specific ICD-10-CM code and is valid for submission on a claim.
Where does I80.203 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).
ICD-10-CMFY2026-Apr· effective April 1, 2026

Loaded directly from the CMS/NCHS ICD-10-CM public-domain release — see data sources and our editorial policy. If this page disagrees with the CMS tabular list, this page is wrong. Reference information for professional coders; not medical or billing advice.