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I80 ICD-10-CM Code: Phlebitis and thrombophlebitis

A clear reference for the official code description, hierarchy, and related coding information from the FY 2027 U.S. release.

Official description

I80

Phlebitis and thrombophlebitis

ICD-10-CM diagnosis code · United States clinical modification

Where I80 sits

  1. 1

    Chapter 9

    Diseases of the circulatory system (I00-I99)

  2. 2

    Section

    Diseases of veins, lymphatic vessels and lymph nodes, not elsewhere classified (I80-I89)

  3. 3

    Category I80

    Phlebitis and thrombophlebitis

  4. 4

    Code I80

    Phlebitis and thrombophlebitis

Codes under I80

I80 is a non-billable category. Choose the child code that best matches the documented diagnosis.

I80.0Phlebitis and thrombophlebitis of superficial vessels of lower extremitiesI80.1Phlebitis and thrombophlebitis of femoral veinI80.2Phlebitis and thrombophlebitis of other and unspecified deep vessels of lower extremitiesI80.3Phlebitis and thrombophlebitis of lower extremities, unspecifiedI80.8Phlebitis and thrombophlebitis of other sitesI80.9Phlebitis and thrombophlebitis of unspecified site

Notes for this code

Inclusion terms

No inclusion terms are listed for I80.

Code first

  • , 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.-)

Use additional code

No “use additional code” instruction is listed for I80.

Excludes1

Conditions that should not be reported together with this code.

  • venous embolism and thrombosis of lower extremities (I82.4-, I82.5-, I82.81-)

Excludes2

Conditions not included here that may be reported separately when present.

No Excludes2 note is listed for I80.

Source and release

Data release
U.S. ICD-10-CM · FY 2027
Effective date
Oct 1, 2026

This reference is generated from Vero’s ICD-10-CM description, hierarchy, and code-note dataset. The visible content and structured data share that source.

Review the CDC/NCHS ICD-10-CM source

Frequently asked questions

What does ICD-10-CM code I80 mean?

I80 is the FY 2027 U.S. ICD-10-CM code for “Phlebitis and thrombophlebitis.”

Is I80 a billable or specific ICD-10-CM code?

No. I80 has more specific child codes in the FY 2027 reference data. Select the code that matches the documentation and confirm the active code set and payer requirements.

Where is I80 located in ICD-10-CM?

I80 is listed in Chapter 9, Diseases of the circulatory system (I00-I99), within Diseases of veins, lymphatic vessels and lymph nodes, not elsewhere classified (I80-I89) (I80–I89), under category I80, Phlebitis and thrombophlebitis.

What coding notes are listed for I80?

No inclusion terms are listed for I80 in this reference record. Code-first instructions: , 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.-). Excludes1 notes: venous embolism and thrombosis of lower extremities (I82.4-, I82.5-, I82.81-). No Excludes2 note is listed.