I80.21Header code — not billable
Phlebitis and thrombophlebitis of iliac vein
- Chapter
- 9. Diseases of the circulatory system
- Category
- I80
- Effective date
- October 1, 2026
Related codes in category I80
I80Phlebitis and thrombophlebitisI80.0Phlebitis and thombophlb of superficial vessels of low extrmI80.00Phlbts and thombophlb of superfic vessels of unsp low extrmYesI80.01Phlebitis and thombophlb of superfic vessels of r low extremYesI80.02Phlebitis and thombophlb of superfic vessels of l low extremYesI80.03Phlbts and thombophlb of superfic vessels of low extrm, biYesI80.1Phlebitis and thrombophlebitis of femoral veinI80.10Phlebitis and thrombophlebitis of unspecified femoral veinYesI80.11Phlebitis and thrombophlebitis of right femoral veinYesI80.12Phlebitis and thrombophlebitis of left femoral veinYesI80.13Phlebitis and thrombophlebitis of femoral vein, bilateralYesI80.2Phlbts and thombophlb of and unsp deep vessels of low extrm
Frequently asked questions
What is ICD-10 code I80.21?
I80.21 is an ICD-10-CM diagnosis code for Phlebitis and thrombophlebitis of iliac vein.
Is I80.21 a billable code?
No. I80.21 is a category/header code, not billable on its own — use one of its more specific child codes instead.
What ICD-10-CM chapter is I80.21 in?
I80.21 falls under Chapter 9: Diseases of the circulatory system.
When did I80.21 become effective?
I80.21 has been effective since October 1, 2026, per the CMS/CDC ICD-10-CM annual release.
What other codes are related to I80.21?
I80.21 belongs to category I80, which includes 12 other codes — see the related codes list on this page.
ICD-10-CM data maintained by CDC/CMS (public domain). Always verify codes with authoritative sources before making coding or billing decisions.