- I81 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
- The 2024 edition of ICD-10-CM I81 became effective on October 1, 2022.
- This is the American ICD-10-CM version of I81 – other international versions of ICD-10 I81 may differ.
ICD-10-CM I81 is grouped within Diagnostic Related Group(s):
- 441 Disorders of liver except malignancy, cirrhosis or alcoholic hepatitis with mcc
- 442 Disorders of liver except malignancy, cirrhosis or alcoholic hepatitis with cc
- 443 Disorders of liver except malignancy, cirrhosis or alcoholic hepatitis without cc/mcc
Applicable To
- Portal (vein) obstruction
Type 2 Excludes
- hepatic vein thrombosis (I82.0)
- phlebitis of portal vein (K75.1)
Code History
- 2016 (effective 10/1/2015): New code (first year of non-draft ICD-10-CM)
- 2016 (effective 10/1/2015): No change
- 2017 (effective 10/1/2016): No change
- 2018 (effective 10/1/2017): No change
- 2019 (effective 10/1/2018): No change
- 2020 (effective 10/1/2019): No change
- 2021 (effective 10/1/2020): No change
- 2022 (effective 10/1/2021): No change
- 2024 (effective 10/1/2022): No change
Diagnosis Index entries containing back-references to I81:
- portal (vein) > Block, blocked
- portal (vein) > Embolism (multiple) (paradoxical) I74.9
- portal (circulation) (vein) > Obstruction, obstructed, obstructive
- portal vein > liver (venous) I82.0
- portal > Thrombosis, thrombotic (bland) (multiple) (progressive) (silent) (vessel) I82.90