Phlbts and thombophlb of unsp deep vessels of l low extrem

This diagnosis code signifies inflammation of a vein (phlebitis) or inflammation of a vein with an associated blood clot (thrombophlebitis) affecting deep veins in the left lower extremity. The specific deep vessel involved is not documented or is unknown.

Use this code when documentation indicates deep vein phlebitis or thrombophlebitis in the left lower limb, but the physician does not specify the particular deep vein (e.g., femoral, popliteal). This code is appropriate when the medical record clearly states "unspecified deep vein" or lacks further anatomical detail for the left lower extremity.

• Ensure the documentation explicitly states "deep vessels" and "left lower extremity" without further anatomical specificity.
• Avoid using this code if a more specific deep vein (e.g., femoral, popliteal) is identified in the documentation; instead, use the appropriate specific code.
• This code does not differentiate between phlebitis and thrombophlebitis; it encompasses both conditions when the vessel is unspecified.