452Portal vein thrombosis
- Legacy / Not Valid for Submission
- Replaced October 1, 2015
452 is a legacy ICD-9-CM diagnosis code for portal vein thrombosis. It was valid on U.S. claims through September 30, 2015 and cannot be reported for services on or after October 1, 2015, when ICD-10-CM replaced the ICD-9 code set. Under the CMS General Equivalence Mappings, its ICD-10-CM replacement is I81 (Portal vein thrombosis), flagged as a direct match.
Code Identity
Convert 452 to ICD-10-CM
Based on the final CMS General Equivalence Mappings (GEMs), 452 crosswalks to the following ICD-10-CM code.
Index of Diseases References
Entries in the final ICD-9-CM Index to Diseases and Injuries that point to 452. Tap the icons for the official index conventions.
- Block
- portal vein 452
- Obstruction obstructed obstructive
- portal circulation vein 452
- Pseudoangioma 452
Questions About 452
Is 452 (portal vein thrombosis) still a valid code?
No. This code belonged to ICD-9-CM, which the United States retired after September 30, 2015. Claims with dates of service on or after October 1, 2015 must use ICD-10-CM codes, such as its replacement I81.
What is the ICD-10 replacement for 452?
The General Equivalence Mappings crosswalk this code directly to ICD-10-CM I81 (Portal vein thrombosis), a one-to-one match.
What did 452 mean?
In the final ICD-9-CM release, this code described portal vein thrombosis. It sat in block 452 Portal vein thrombosis under Diseases of the circulatory system (390–459).
