ICD-10 Code I82.561 – Chronic embolism and thrombosis of right calf muscular vein (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code I82.561 – Chronic embolism and thrombosis of right calf muscular vein
What it is
This code identifies a long-standing blood clot or embolic blockage in a muscular vein of the right calf. Use it when documentation specifies the right side and chronic involvement.
Clinical signs
Clinical features vary; refer to documentation. Commonly recorded findings may include calf pain, swelling, tenderness, or persistent venous obstruction on imaging or exam.
When to use this code
Use this code when the provider documents chronic embolism or thrombosis in a muscular vein of the right calf. It applies when the site and chronic nature are both clearly stated. If the note only says deep vein thrombosis without location, check documentation before coding.
Do not use for
Do not use it for acute thrombosis, unspecified leg vein thrombosis, or clotting in a different anatomic site. If the record does not confirm the right calf muscular vein, choose a more accurate code.
Coding tip
Confirm both chronicity and laterality in the provider note before assigning I82.561.