I80.0

Phlebitis and thrombophlebitis of superficial vessels of lower extremities

FY2027Chapter 9: Diseases of the circulatory system/I80–I89 Diseases of veins, lymphatic vessels and lymph nodes, not elsewhere classified

Non-billable headerNot valid on its own. Use one of the more specific codes under it.

I80.0 is a non-billable ICD-10-CM code header for phlebitis and thrombophlebitis of superficial vessels of lower extremities. Report a more specific code from it instead. It is part of the FY2027 code set, effective October 1, 2026. The more specific codes under it are I80.00 Phlebitis and thrombophlebitis of superficial vessels of unspecified lower extremity; I80.01 Phlebitis and thrombophlebitis of superficial vessels of right lower extremity; I80.02 Phlebitis and thrombophlebitis of superficial vessels of left lower extremity and I80.03 Phlebitis and thrombophlebitis of superficial vessels of lower extremities, bilateral. Its coding notes include a Code first instruction, 1 Excludes1 entry and 10 Excludes2 entries.

Code first

If the underlying condition listed here is present and known, sequence it first.

Inherited from I80 Phlebitis and thrombophlebitis
  • , 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

Not coded here. The listed conditions generally should not be reported together.

Inherited from I80 Phlebitis and thrombophlebitis

Excludes2

Not included here. Both codes may be reported if the patient has both conditions.

Also from chapter/block level (10 notes)
Inherited from Chapter 9 Diseases of the circulatory system
  • certain conditions originating in the perinatal period (P04-P96)
  • certain infectious and parasitic diseases (A00-B99)
  • complications of pregnancy, childbirth and the puerperium (O00-O9A)
  • congenital malformations, deformations, and chromosomal abnormalities (Q00-Q99)
  • endocrine, nutritional and metabolic diseases (E00-E88)
  • injury, poisoning and certain other consequences of external causes (S00-T88)
  • neoplasms (C00-D49)
  • symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)
  • systemic connective tissue disorders (M30-M36)
  • transient cerebral ischemic attacks and related syndromes (G45.-)

Includes

Further defines or gives examples of the content of the category.

Inherited from I80 Phlebitis and thrombophlebitis
  • endophlebitis
  • inflammation, vein
  • periphlebitis
  • suppurative phlebitis

Inclusion terms

Conditions classified to this code.

This code
  • Phlebitis and thrombophlebitis of femoropopliteal vein

Alphabetic Index terms

Terms the official Alphabetic Index lists for this code. 4 entries

More specific codes under I80.0 4