I80.251

Billable

Phlebitis and thrombophlebitis of right calf muscular vein

HCC Category Mapping

V28HCC 267 — Vascular Disease

0.356

V24HCC 108 — Vascular Disease

0.297

ESRDHCC 108 — Vascular Disease

0.000

RxHCCHCC 215 — Pulmonary Embolism and Other Vascular Disease

0.000

What This Code Means

Inflammation and blood clot formation in the deep veins of the right calf muscle, causing pain, swelling, and potential complications if the clot travels.

Coding Tips

•Verify laterality is documented as right; if bilateral or unspecified, use different codes I80.253 or I80.259
•Distinguish between superficial thrombophlebitis (I80.0-I80.1) and deep vein thrombosis to ensure accurate code selection

Clinical Significance

Phlebitis and thrombophlebitis of the right calf muscular vein involves the soleal or gastrocnemius veins, which are intramuscular deep veins. While these are the most distal deep veins and carry the lowest individual risk of pulmonary embolism among deep vein thrombosis locations, they can still propagate proximally. Management decisions between anticoagulation and surveillance vary by clinical context and institutional protocols.

Documentation Requirements

✓Duplex ultrasound confirming calf muscular vein (soleal or gastrocnemius) thrombosis
✓Laterality — right calf documented
✓Specification of soleal vs. gastrocnemius vein when documented
✓Acuity — acute vs. chronic thrombosis
✓Clinical rationale for treatment approach (anticoagulation vs. surveillance)
✓Risk factor assessment for propagation
✓Follow-up imaging plan if surveillance strategy chosen

Commonly Confused Codes

I80.23x — Tibial vein thrombophlebitis: axial calf deep veins, not intramuscular I80.24x — Peroneal vein thrombophlebitis: axial calf deep veins, not intramuscular I80.22x — Popliteal vein thrombophlebitis: proximal deep vein, higher risk I80.0x — Superficial vessel thrombophlebitis: superficial veins only M79.661-M79.669 — Pain in lower leg: symptom code, not a vascular diagnosis

Code Hierarchy

└I80Phlebitis and thrombophlebitis └I80.2Phlebitis and thrombophlebitis of other and unspecified deep vessels of lower extremities └I80.25Phlebitis and thrombophlebitis of calf muscular vein └I80.251Phlebitis and thrombophlebitis of right calf muscular vein

└I80.251Phlebitis and thrombophlebitis of right calf muscular vein