In simple words: Phlebitis and thrombophlebitis are conditions where a vein becomes inflamed and a blood clot may form. This can cause pain, swelling, and redness in the affected area.

Phlebitis and thrombophlebitis. Includes: endophlebitis, inflammation of vein, periphlebitis, suppurative phlebitis. Excludes1: venous embolism and thrombosis of lower extremities (I82.4-, I82.5-, I82.81-). Excludes2: phlebitis and thrombophlebitis complicating abortion, ectopic or molar pregnancy (O00-O07, O08.7), phlebitis and thrombophlebitis complicating pregnancy, childbirth and the puerperium (O22.-, O87.-)

Example 1: A patient presents with pain, swelling, and redness in their lower leg. Upon examination, the clinician diagnoses superficial thrombophlebitis of the lower extremity. The appropriate code is I80.0., A pregnant woman develops a blood clot in her femoral vein during the postpartum period. This is considered a complication of childbirth, and the appropriate code would be O87.2 (other venous complications in the puerperium) with I80.1 (phlebitis and thrombophlebitis of femoral vein) listed as a secondary code. , A patient with a history of intravenous drug use presents with fever, chills, and localized pain and swelling in their arm. The clinician diagnoses suppurative phlebitis, a severe form of phlebitis involving bacterial infection. I80 is the appropriate code, even though it is an infection, because of the vascular origin.

Documentation should include the affected vessel, laterality (right or left), the presence of inflammation or thrombosis, and any associated symptoms such as pain, swelling, and redness.Deep vein thrombosis (DVT) should be clearly documented if present.

** This information is current as of November 30, 2024.Coding guidelines and medical necessity criteria are subject to change.