I81Billable
Portal vein thrombosis
- Chapter
- 9. Diseases of the circulatory system
- Category
- I81
- Effective date
- October 1, 2026
Frequently asked questions
What is ICD-10 code I81?
I81 is an ICD-10-CM diagnosis code for Portal vein thrombosis.
Is I81 a billable code?
Yes. I81 is billable and specific enough to be used on a claim.
What ICD-10-CM chapter is I81 in?
I81 falls under Chapter 9: Diseases of the circulatory system.
When did I81 become effective?
I81 has been effective since October 1, 2026, per the CMS/CDC ICD-10-CM annual release.
ICD-10-CM data maintained by CDC/CMS (public domain). Always verify codes with authoritative sources before making coding or billing decisions.