ICD-10 Code I82.891 – Chronic embolism and thrombosis of other specified veins (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code I82.891 – Chronic embolism and thrombosis of other specified veins
What it is
This code identifies a chronic clot or embolic blockage in a vein that is not named in a more specific ICD-10 category. Use it when the record clearly documents an ongoing venous thrombosis or embolism at another specified site.
Clinical signs
Clinical features vary; refer to documentation. Commonly, the chart may note persistent venous obstruction, swelling, pain, heaviness, or collateral venous circulation, but the diagnosis should be supported by imaging or specialist assessment when available.
When to use this code
Use this code when the provider documents chronic embolism or thrombosis affecting a specified vein that is not captured by a more specific code. It is appropriate for follow-up encounters, persistent disease, or a history of venous clot that remains active in the record. If the site is not specified, check documentation.
Do not use for
Do not use this code for acute venous thrombosis, superficial thrombophlebitis, or arterial embolism. If the record describes a different vein site or only a past history without current disease, choose the more accurate code.
Coding tip
Confirm the vein location and whether the condition is chronic before assigning I82.891.