I80.3 – Phlebitis and thrombophlebitis of lower extremities, unspecified

ICD-10-CM 2027 diagnosis code · Diseases of veins, lymphatic vessels and lymph nodes, not elsewhere classified

Billable code

ICD-10-CM code I80.3

Code: I80.3 (claims format: I803)
Description: Phlebitis and thrombophlebitis of lower extremities, unspecified
Short description: Phlebitis and thrombophlebitis of lower extremities, unsp
Billable: Yes – valid for HIPAA-covered transactions
Valid for: Dates of service October 1, 2026 – September 30, 2027 (FY2027)
Chapter: 9. Diseases of the circulatory system (I00-I99)
Block: I80-I89 Diseases of veins, lymphatic vessels and lymph nodes, not elsewhere classified
Parent codes: I80

Notes inherited from parent codes

Instructional notes at a category or block level apply to every code below it.

I80 – Phlebitis and thrombophlebitis

Includes:

endophlebitis
inflammation, vein
periphlebitis
suppurative phlebitis

Excludes1 (not coded here):

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

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.-)

Index terms for I80.3

Entries in the ICD-10-CM alphabetic index that lead to this code:

Phlebitis, leg

Related codes in I80

Frequently asked questions

What is ICD-10 code I80.3?

I80.3 is the ICD-10-CM code for phlebitis and thrombophlebitis of lower extremities, unspecified, in the block I80-I89 (Diseases of veins, lymphatic vessels and lymph nodes, not elsewhere classified).

Is I80.3 a billable code?

Yes. I80.3 is a billable/specific code that can be used to indicate a diagnosis for reimbursement purposes.

What category does I80.3 belong to?

It belongs to category I80 – Phlebitis and thrombophlebitis.

Source: CDC/NCHS ICD-10-CM FY2027 code files, tabular list and index. Reference only – code assignment must follow the official ICD-10-CM guidelines and documentation in the medical record.