2022 ICD-10-CM Code I80.21

Phlebitis and thrombophlebitis of iliac vein

Version 2021

Not Valid for Submission

ICD-10:I80.21
Short Description:Phlebitis and thrombophlebitis of iliac vein
Long Description:Phlebitis and thrombophlebitis of iliac vein

Code Classification

  • Diseases of the circulatory system (I00–I99)
    • Diseases of veins, lymphatic vessels and lymph nodes, not elsewhere classified (I80-I89)
      • Phlebitis and thrombophlebitis (I80)

I80.21 is a non-specific and non-billable diagnosis code code, consider using a code with a higher level of specificity for a diagnosis of phlebitis and thrombophlebitis of iliac vein. The code is not specific and is NOT valid for the year 2022 for the submission of HIPAA-covered transactions. Category or Header define the heading of a category of codes that may be further subdivided by the use of 4th, 5th, 6th or 7th characters.

Specific Coding for Phlebitis and thrombophlebitis of iliac vein

Non-specific codes like I80.21 require more digits to indicate the appropriate level of specificity. Consider using any of the following ICD-10 codes with a higher level of specificity when coding for phlebitis and thrombophlebitis of iliac vein:

  • BILLABLE CODE - Use I80.211 for Phlebitis and thrombophlebitis of right iliac vein
  • BILLABLE CODE - Use I80.212 for Phlebitis and thrombophlebitis of left iliac vein
  • BILLABLE CODE - Use I80.213 for Phlebitis and thrombophlebitis of iliac vein, bilateral
  • BILLABLE CODE - Use I80.219 for Phlebitis and thrombophlebitis of unspecified iliac vein

Tabular List of Diseases and Injuries

The Tabular List of Diseases and Injuries is a list of ICD-10 codes, organized "head to toe" into chapters and sections with coding notes and guidance for inclusions, exclusions, descriptions and more. The following references are applicable to the code I80.21:


Inclusion Terms

Inclusion Terms
These terms are the conditions for which that code is to be used. The terms may be synonyms of the code title, or, in the case of "other specified" codes, the terms are a list of the various conditions assigned to that code. The inclusion terms are not necessarily exhaustive. Additional terms found only in the Alphabetic Index may also be assigned to a code.

Index to Diseases and Injuries

The Index to Diseases and Injuries is an alphabetical listing of medical terms, with each term mapped to one or more ICD-10 code(s). The following references for the code I80.21 are found in the index:

Information for Patients


Blood Clots

What is a blood clot?

A blood clot is mass of blood that forms when platelets, proteins, and cells in the blood stick together. When you get hurt, your body forms a blood clot to stop the bleeding. After the bleeding stops and healing takes place, your body usually breaks down and removes the blood clot. But sometimes the blood clots form where they shouldn't, your body makes too many blood clots or abnormal blood clots, or the blood clots don't break down like they should. These blood clots can be dangerous and may cause other health problems.

Blood clots can form in, or travel to, the blood vessels in the limbs, lungs, brain, heart, and kidneys. The types of problems blood clots can cause will depend on where they are:

Who is at risk for blood clots?

Certain factors can raise the risk of blood clots:

What are the symptoms of blood clots?

The symptoms for blood clots can be different, depending on where the blood clot is:

How are blood clots diagnosed?

Your health care provider may use many tools to diagnose blood clots:

What are the treatments for blood clots?

Treatments for blood clots depend on where the blood clot is located and how severe it is. Treatments may include

Can blood clots be prevented?

You may be able to help prevent blood clots by

Some people at high risk may need to take blood thinners to prevent blood clots.


[Learn More in MedlinePlus]

Deep Vein Thrombosis

Deep vein thrombosis, or DVT, is a blood clot that forms in a vein deep in the body. Most deep vein clots occur in the lower leg or thigh. If the vein swells, the condition is called thrombophlebitis. A deep vein thrombosis can break loose and cause a serious problem in the lung, called a pulmonary embolism.

Sitting still for a long time can make you more likely to get a DVT. Some medicines and disorders that increase your risk for blood clots can also lead to DVTs. Common symptoms are

Treatment includes medicines to ease pain and inflammation, break up clots and keep new clots from forming. Keeping the affected area raised and applying moist heat can also help. If you are taking a long car or plane trip, take a break, walk or stretch your legs and drink plenty of liquids.


[Learn More in MedlinePlus]

Code History

  • FY 2021 - No Change, effective from 10/1/2020 through 9/30/2021
  • FY 2020 - No Change, effective from 10/1/2019 through 9/30/2020
  • FY 2019 - No Change, effective from 10/1/2018 through 9/30/2019
  • FY 2018 - No Change, effective from 10/1/2017 through 9/30/2018
  • FY 2017 - No Change, effective from 10/1/2016 through 9/30/2017
  • FY 2016 - New Code, effective from 10/1/2015 through 9/30/2016 (First year ICD-10-CM implemented into the HIPAA code set)