All ICD10 Codes
I80Not billable, use a more specific code below

Phlebitis and thrombophlebitis

In Diseases of veins, lymphatic vessels and lymph nodes, not elsewhere classified (I80-I89), chapter 9: Diseases of the Circulatory System

39 billable codes under I80: 28 are a CC; 32 map to HCC 267 (Deep Vein Thrombosis and Pulmonary Embolism).A CC or MCC (major CC) is a secondary diagnosis that raises the MS-DRG payment. An HCC counts toward a Medicare Advantage patient's risk score.

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Instructional notes

Includes: conditions that are coded here

  • endophlebitis
  • inflammation, vein
  • periphlebitis
  • suppurative phlebitis

Excludes1: not coded here, use a different code

Code first: code the underlying condition first, then this code

  • if applicable: phlebitis and thrombophlebitis complicating abortion, ectopic or molar pregnancy (O00-O07, O08.7)
  • phlebitis and thrombophlebitis complicating pregnancy, childbirth and the puerperium (O22.-, O87.-)

Official coding guidelines

From the ICD-10-CM Official Guidelines for Coding and Reporting, FY 2027 (CMS and NCHS). Links open the PDF at the right page.

Covers hypertension with heart and kidney disease, coronary artery disease with angina, perioperative stroke, cerebrovascular sequelae, and acute myocardial infarction types and timing.

Read Section I.C.9 (page 50)

All codes under I80

I80 can't be used on a claim. Pick a billable code below; grey headings group them.

I80 MS-DRGs

As the principal diagnosis, the billable codes under I80 group to MS-DRG 299, 300, 301, 791, or 793 (v44.0). Which one applies depends on procedures performed, secondary diagnoses (CC/MCC), and the patient's age and discharge status.

Code history

Valid since FY2016, when ICD-10-CM took effect on October 1, 2015. No changes since.