2017/18 ICD-10-CM Diagnosis Code I81

Portal vein thrombosis

Applicable To
  • Portal (vein) obstruction
Type 2 Excludes
Type 2 Excludes Help
A type 2 excludes note represents "not included here". A type 2 excludes note indicates that the condition excluded is not part of the condition it is excluded from but a patient may have both conditions at the same time. When a type 2 excludes note appears under a code it is acceptable to use both the code (I81) and the excluded code together.
  • hepatic vein thrombosis (
    ICD-10-CM Diagnosis Code I82.0

    Budd-Chiari syndrome

      2016 2017 2018 Billable/Specific Code
    Applicable To
    • Hepatic vein thrombosis
    I82.0
    )
  • phlebitis of portal vein (
    ICD-10-CM Diagnosis Code K75.1

    Phlebitis of portal vein

      2016 2017 2018 Billable/Specific Code
    Applicable To
    • Pylephlebitis
    Type 1 Excludes
    • pylephlebitic liver abscess (K75.0)
    K75.1
    )
The following code(s) above I81 contain annotation back-references
Annotation Back-References
In this context, annotation back-references refer to codes that contain:
  • Applicable To annotations, or
  • Code Also annotations, or
  • Code First annotations, or
  • Excludes1 annotations, or
  • Excludes2 annotations, or
  • Includes annotations, or
  • Note annotations, or
  • Use Additional annotations
that may be applicable to I81:
  • I00-I99
    2018 ICD-10-CM Range I00-I99

    Diseases of the circulatory system

    Type 2 Excludes
    • certain conditions originating in the perinatal period (P04-P96)
    • certain infectious and parasitic diseases (A00-B99)
    • complications of pregnancy, childbirth and the puerperium (O00-O9A)
    • congenital malformations, deformations, and chromosomal abnormalities (Q00-Q99)
    • endocrine, nutritional and metabolic diseases (E00-E88)
    • injury, poisoning and certain other consequences of external causes (S00-T88)
    • neoplasms (C00-D49)
    • symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)
    • systemic connective tissue disorders (M30-M36)
    • transient cerebral ischemic attacks and related syndromes (G45.-)
    Diseases of the circulatory system
Approximate Synonyms Clinical Information ICD-10-CM I81 is grouped within Diagnostic Related Group(s) (MS-DRG v35.0):

Convert I81 to ICD-9-CM

Code History
Code annotations containing back-references to I81:

Diagnosis Index entries containing back-references to I81:

ICD-10-CM Codes Adjacent To I81
I80.233 …… bilateral
I80.239 Phlebitis and thrombophlebitis of unspecified tibial vein
I80.29 Phlebitis and thrombophlebitis of other deep vessels of lower extremities
I80.291 Phlebitis and thrombophlebitis of other deep vessels of right lower extremity
I80.292 Phlebitis and thrombophlebitis of other deep vessels of left lower extremity
I80.293 Phlebitis and thrombophlebitis of other deep vessels of lower extremity, bilateral
I80.299 Phlebitis and thrombophlebitis of other deep vessels of unspecified lower extremity
I80.3 Phlebitis and thrombophlebitis of lower extremities, unspecified
I80.8 Phlebitis and thrombophlebitis of other sites
I80.9 Phlebitis and thrombophlebitis of unspecified site
I81 Portal vein thrombosis
I82 Other venous embolism and thrombosis
I82.0 Budd-Chiari syndrome
I82.1 Thrombophlebitis migrans
I82.2 Embolism and thrombosis of vena cava and other thoracic veins
I82.21 Embolism and thrombosis of superior vena cava
I82.210 Acute embolism and thrombosis of superior vena cava
I82.211 Chronic embolism and thrombosis of superior vena cava
I82.22 Embolism and thrombosis of inferior vena cava
I82.220 Acute embolism and thrombosis of inferior vena cava
I82.221 Chronic embolism and thrombosis of inferior vena cava

Reimbursement claims with a date of service on or after October 1, 2015 require the use of ICD-10-CM codes.