I80.29Phlebitis and thrombophlebitis of other deep vessels of lower extremities

I80.29 is the ICD-10-CM diagnosis code for phlebitis and thrombophlebitis of other deep vessels of lower extremities. It belongs to category I80 (phlebitis and thrombophlebitis), block I80-I89 (diseases of veins, lymphatic vessels and lymph nodes, not elsewhere classified) and chapter 9 (diseases of the circulatory system). It is a header code, so it can't be reported by itself; one of its 4 subcodes must be used instead.

Within I80.2, choose I80.29 (other deep vessels of lower extremities) only when documentation doesn't support a more specific option: unspecified deep vessels of lower extremities (I80.20), iliac vein (I80.21), popliteal vein (I80.22), tibial vein (I80.23), peroneal vein (I80.24) and calf muscular vein (I80.25).

To report this condition, pick the subcode that matches the documentation: I80.291 (extremity), I80.292 (extremity), I80.293 (bilateral) and I80.299 (extremity).

Code first: , if applicable: phlebitis and thrombophlebitis complicating abortion, ectopic or molar pregnancy (O00-O07, O08.7) and phlebitis and thrombophlebitis complicating pregnancy, childbirth and the puerperium (O22.-, O87.-).

It has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.