ICD-10-CM 2027
ICD-10 code for Pyelophlebitis
From the official ICD-10-CM alphabetic index entry “Pyelophlebitis”. Page updated September 29, 2026.
About coding Pyelophlebitis
The ICD-10-CM code for Pyelophlebitis is I80.8 (Phlebitis and thrombophlebitis of other sites).
Within I80, choose I80.8 (of other sites) only when documentation doesn't support a more specific option: of superficial vessels of lower extremities (I80.0), of femoral vein (I80.1), of other and unspecified deep vessels of lower extremities (I80.2), of lower extremities, unspecified (I80.3) and of unspecified site (I80.9).
Code first: , if applicable: phlebitis and thrombophlebitis complicating abortion, ectopic or molar pregnancy (O00-O07, O08.7) and phlebitis and thrombophlebitis complicating pregnancy, childbirth and the puerperium (O22.-, O87.-).
It is not a CC or MCC, so as a secondary diagnosis it doesn't change the MS-DRG severity level.
Common questions about Pyelophlebitis ICD-10 codes
What is the ICD-10 code for Pyelophlebitis?
- I80.8 — Phlebitis and thrombophlebitis of other sites.
Is I80.8 billable?
- Yes. I80.8 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can I80.8 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict I80.8 as a principal diagnosis.
Is I80.8 a CC or MCC?
- No. I80.8 is neither a CC nor an MCC under MS-DRG v44.0.