I80.00 Phlebitis and thrombophlebitis of superficial vessels of unspecified lower extremity

Billable ICD-10-CM code, FY2026.

Applies from I80 Phlebitis and thrombophlebitis

Includes

• endophlebitis
• inflammation, vein
• periphlebitis
• suppurative phlebitis

Excludes1 (never code together)

• 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.-)

Applies from I80.0 Phlebitis and thrombophlebitis of superficial vessels of lower extremities

Applicable to

• Phlebitis and thrombophlebitis of femoropopliteal vein

MS-DRG index

Defines the logic of DRG(s) 299-301 in MDC 05.

Approximate ICD-9-CM (GEMs)

• 451.0 Phlebitis and thrombophlebitis of superficial vessels of lower extremities (approximate)

Code annotations containing back-references to I80.00

Back-references to I80.0

• Use Additional: O22.2 Superficial thrombophlebitis in pregnancy ("code to identify the superficial thrombophlebitis (I80.0-)")
• Use Additional: O87.0 Superficial thrombophlebitis in the puerperium ("code, if applicable, to identify the superficial vein thrombosis, such as thrombosis of superficial vessels of lower extremities (I80.0-)")

Nearby codes

• I80 Phlebitis and thrombophlebitis
• I80.0 Phlebitis and thrombophlebitis of superficial vessels of lower extremities
• I80.00 Phlebitis and thrombophlebitis of superficial vessels of unspecified lower extremity (this code)
• I80.01 Phlebitis and thrombophlebitis of superficial vessels of right lower extremity
• I80.02 Phlebitis and thrombophlebitis of superficial vessels of left lower extremity
• I80.03 Phlebitis and thrombophlebitis of superficial vessels of lower extremities, bilateral
• I80.1 Phlebitis and thrombophlebitis of femoral vein
• I80.10 Phlebitis and thrombophlebitis of unspecified femoral vein