Chr emblsm and thombos unsp deep vn unsp distal low extrm

This code signifies a persistent blockage within an unspecified deep vein of an unspecified distal lower extremity, caused by either an embolus (a traveling clot) or a thrombus (a stationary clot). This condition is chronic, indicating a long-standing or recurrent nature of the vascular obstruction.

Apply this code when documentation clearly indicates a chronic deep vein thrombosis or embolism affecting a distal lower extremity, but the specific vein (e.g., peroneal, tibial) and laterality (left/right) are not specified. This code is appropriate when the provider's assessment confirms chronicity and the location is generalized to the distal lower extremity without further detail.

• Avoid using this code if laterality (left/right) or the specific deep vein (e.g., anterior tibial, posterior tibial, peroneal) is documented; instead, use a more specific code from the I82.5- series.
• Ensure documentation explicitly states "chronic" to support the use of this code; otherwise, consider acute DVT codes.
• This code should be a last resort when more specific anatomical or laterality information is unavailable in the medical record.