ICD10
ICD-10 Code I80.0: Phlebitis and thrombophlebitis of superficial vessels of lower extremities
Reviewed by HealthAssure Clinical TeamUpdated 26 May 2026
What is this code?
ICD-10 entries help standardize how diagnoses are organized for coding, reporting, analytics, and documentation. This code sits within the broader ICD-10 area for Diseases of the circulatory system (I00-I99).
When is it used?
- May be used when a clinician documents phlebitis and thrombophlebitis of superficial vessels of lower extremities in a patient's medical record.
- May appear in hospital records, claims, referrals, and clinical documentation.
- This code may act more like a grouping or parent code, so a more specific child code may be used in final documentation when available.
What it does not mean
- A code alone does not explain severity, treatment plan, or outcome.
- A medical code should not be treated as a substitute for a doctor's diagnosis or advice.
- This entry may represent a broader category rather than the most specific billable code.
Code hierarchy
chapter
9Diseases of the circulatory system (I00-I99)
block
I80-I89Diseases of veins, lymphatic vessels and lymph nodes, not elsewhere classified
category
I80Phlebitis and thrombophlebitis
currentI80
Official coding notes
Inclusion terms
- Phlebitis and thrombophlebitis of femoropopliteal vein
Where you may see this code
You may see this entry in coding references, medical records, or claims workflows when a broader diagnosis category is being reviewed before a more specific code is chosen.
Related specialists
CardiologistGeneral Physician
Related codes
I80.00Phlebitis and thrombophlebitis of superficial vessels of unspecified lower extremitycodeI80.01Phlebitis and thrombophlebitis of superficial vessels of right lower extremitycodeI80.02Phlebitis and thrombophlebitis of superficial vessels of left lower extremitycodeI80.03Phlebitis and thrombophlebitis of superficial vessels of lower extremities, bilateralcode
Sibling codes
I80.1Phlebitis and thrombophlebitis of femoral veinI80.2Phlebitis and thrombophlebitis of other and unspecified deep vessels of lower extremitiesI80.3Phlebitis and thrombophlebitis of lower extremities, unspecifiedbillableI80.8Phlebitis and thrombophlebitis of other sitesbillableI80.9Phlebitis and thrombophlebitis of unspecified sitebillable
Mapped diagnoses and classifications
SNOMED_CT 16014591000119103high
Bilateral lower limb superficial vein thrombophlebitis
Source: SNOMED International ICD-10 map
SNOMED_CT 709602009high
Chronic thrombosis of superficial vein of lower limb
Source: SNOMED International ICD-10 map
SNOMED_CT 770112002high
Phlebitis of dorsal venous arch of foot
Source: SNOMED International ICD-10 map
SNOMED_CT 72565004high
Phlebitis of superficial veins of lower extremity
Source: SNOMED International ICD-10 map
SNOMED_CT 234039000high
Saphenous vein phlebitis
Source: SNOMED International ICD-10 map
SNOMED_CT 234040003high
Saphenous vein thrombophlebitis
Source: SNOMED International ICD-10 map
Coding guidelines
Compatibility
Legacy code aligns to an official FY 2026 category. Frontend should resolve to the official category page and surface the billable child codes.
Legacy codes
I80.0
Replacement codes
I80.00 — Phlebitis and thrombophlebitis of superficial vessels of unspecified lower extremityI80.01 — Phlebitis and thrombophlebitis of superficial vessels of right lower extremityI80.02 — Phlebitis and thrombophlebitis of superficial vessels of left lower extremityI80.03 — Phlebitis and thrombophlebitis of superficial vessels of lower extremities, bilateral
Common synonyms
Phlebitis and thrombophlebitis of superficial vessels of lower extremities
Frequently asked questions
About this content
This page is prepared by HealthAssure's clinical team using official coding standards from ICD-10. AI tools assist with drafting explanations, which are then reviewed and verified by healthcare professionals for accuracy. This content is for informational purposes and does not replace professional medical advice. Meet our team.