ICD-10-CM 2027
ICD-10 code for Pylephlebitis
From the official ICD-10-CM alphabetic index entry “Pylephlebitis”. Page updated September 29, 2026.
About coding Pylephlebitis
The ICD-10-CM code for Pylephlebitis is K75.1 (Phlebitis of portal vein).
Within K75 (other inflammatory liver diseases), K75.1 is specifically for phlebitis of portal vein. Related codes cover abscess of liver (K75.0), nonspecific reactive hepatitis (K75.2), granulomatous hepatitis, not elsewhere classified (K75.3), autoimmune hepatitis (K75.4), other specified inflammatory liver diseases (K75.8) and inflammatory liver disease, unspecified (K75.9).
Don't report K75.1 together with the conditions in its Excludes1 note: pylephlebitic liver abscess (K75.0).
As a secondary diagnosis it is an MCC (major complication or comorbidity), which can move an inpatient stay into the highest-paying "with MCC" MS-DRG of its family, unless the principal diagnosis excludes it.
Don't confuse with (Excludes1 for K75.1)
- pylephlebitic liver abscess (K75.0)
Common questions about Pylephlebitis ICD-10 codes
What is the ICD-10 code for Pylephlebitis?
- K75.1 — Phlebitis of portal vein.
Is K75.1 billable?
- Yes. K75.1 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can K75.1 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict K75.1 as a principal diagnosis.
Is K75.1 a CC or MCC?
- K75.1 is an MCC (major complication or comorbidity) under MS-DRG v44.0, unless excluded by the principal diagnosis.