ICD-10-CM I81: Portal vein thrombosis

ICD-10-CM Diagnosis Code (2025)

Official Description for I81

Portal vein thrombosis

Coding Notes & Guidelines for I81

Excludes2: Not Included Here
  • hepatic vein thrombosis (I82.0)
  • phlebitis of portal vein (K75.1)
Inclusion Terms

Portal (vein) obstruction

About ICD-10-CM Code I81 (Portal vein thrombosis)

ICD-10-CM code I81 is a billable or specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes. The 2025 edition of ICD-10-CM I81 became effective on October 1, 2024.

This page provides detailed information about I81 - Portal vein thrombosis. It includes common terminology, coding guidelines such as "Includes," "Excludes1," and "Excludes2" notes, and information on required 7th characters. Utilizing this information correctly is essential for accurate medical coding and claims submission for conditions like Portal vein thrombosis.