I81

Portal vein thrombosis

Billable / specific

I81 is a billable, specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes in FY2027.

Inclusion terms

Applicable to

  • Portal (vein) obstruction

Excludes2

Not included here — may be reported together when both conditions exist.

  • 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.-)
  • hepatic vein thrombosis (I82.0)
  • phlebitis of portal vein (K75.1)

Also known as

  • Portal (vein) obstruction
  • Block, blocked, portal
  • Embolism, portal
  • Obstruction, obstructed, obstructive, portal
  • Pseudoangioma
  • Thrombosis, thrombotic, liver, portal vein
  • Thrombosis, thrombotic, portal

Related codes

  • I80Phlebitis and thrombophlebitisHeader
  • I82Other venous embolism and thrombosisHeader
  • I83Varicose veins of lower extremitiesHeader
  • I85Esophageal varicesHeader
  • I86Varicose veins of other sitesHeader
  • I87Other disorders of veinsHeader
  • I88Nonspecific lymphadenitisHeader
  • I89Other noninfective disorders of lymphatic vessels and lymph nodesHeader

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