I80.239
BillablePhlebitis and thrombophlebitis of unspecified tibial vein
HCC Category Mapping
V28HCC 267 — Vascular Disease
0.356V24HCC 108 — Vascular Disease
0.297ESRDHCC 108 — Vascular Disease
0.000RxHCCHCC 215 — Pulmonary Embolism and Other Vascular Disease
0.000What This Code Means
This code describes inflammation of a vein in the lower leg (tibial vein) with blood clot formation, but the specific tibial vein location is not documented. The tibial veins are deep veins that run through the calf area.
Coding Tips
- •Query the provider if the specific tibial vein (anterior or posterior) can be identified, as this may allow for a more specific code (I80.231 or I80.232)
- •Verify laterality (left vs. right leg) is documented; if not specified, ensure the unspecified code I80.239 is appropriate rather than assuming a side
Clinical Significance
Phlebitis and thrombophlebitis of the unspecified tibial vein represents distal deep vein thrombosis of the lower leg. While distal deep vein thrombosis generally carries lower risk of pulmonary embolism compared to proximal deep vein thrombosis, it can propagate proximally if untreated. Management may involve anticoagulation or serial surveillance depending on clinical context and risk factors.
Documentation Requirements
- ✓Duplex ultrasound confirming tibial vein thrombosis
- ✓Laterality — unspecified tibial vein documented
- ✓Specification of anterior or posterior tibial vein when documented
- ✓Acuity — acute vs. chronic thrombosis
- ✓Risk assessment for proximal propagation
- ✓Treatment decision — anticoagulation vs. serial surveillance with rationale
- ✓Follow-up imaging plan to assess for clot extension
Commonly Confused Codes
I80.22x — Popliteal vein thrombophlebitis: more proximal deep vein, different management implicationsI80.24x — Peroneal vein thrombophlebitis: different calf vein with separate codeI80.25x — Calf muscular vein thrombophlebitis: soleal or gastrocnemius vein, not tibialI80.0x — Superficial vessel thrombophlebitis: superficial veins onlyI80.20x — Unspecified deep vessels: less specific; use I80.23x when tibial vein is identified
Code Hierarchy
└I80Phlebitis and thrombophlebitis└I80.2Phlebitis and thrombophlebitis of other and unspecified deep vessels of lower extremities└I80.23Phlebitis and thrombophlebitis of tibial vein└I80.239Phlebitis and thrombophlebitis of unspecified tibial vein
└I80.239Phlebitis and thrombophlebitis of unspecified tibial vein