What I83 covers · when clinicians use it
ICD-10 code I83 identifies Varicose veins of lower extremities in the U.S. ICD-10-CM clinical and billing record set. It sits within the Circulatory System chapter (I00–I99), the section that groups related diagnoses so providers, payers, and public-health agencies report them consistently. Clinicians and medical coders apply I83 when an encounter's findings match the Varicose veins of lower extremities description, attaching it to the patient record so downstream insurance claims, payer audits, quality reporting, and epidemiological surveillance all reference the same standardized diagnosis. The ICD-10-CM is maintained by the Centers for Medicare & Medicaid Services and the CDC's National Center for Health Statistics, with an updated official code set released each U.S. fiscal year — always verify I83 against the current CMS/CDC release and your payer's documentation guidance before final use. This page summarizes documentation context for I83 and is a coding reference, not clinical, diagnostic, or billing advice.
I83 refers to Varicose veins of lower extremities, a group of vascular and lymphatic conditions primarily affecting veins, lymph nodes, and lymphatic vessels. These disorders can lead to clot formation, varicosities, lymphatic dysfunction, or life-threatening bleeding depending on the site.
Symptoms
- Leg pain or swelling – Seen in phlebitis and deep vein thrombosis (I80, I82)
- Abdominal swelling or pain – Linked to portal vein thrombosis (I81)
- Visible leg veins or heaviness – Indicative of varicose veins (I83, I86)
- Vomiting blood or black stools – A sign of bleeding esophageal varices (I85)
- Chronic limb swelling – May result from lymphatic dysfunction (I89)
- Lymph node tenderness – Seen in nonspecific lymphadenitis (I88)
- Skin changes or ulcers – Related to venous insufficiency or chronic thrombosis (I87)
Diagnosis
Diagnosis of Varicose veins of lower extremities involves Doppler ultrasound, CT or MR venography, endoscopy (for esophageal varices), lymphoscintigraphy, and lab testing to rule out infection or clotting disorders. Evaluation is tailored to symptoms and location of vascular or lymphatic compromise.
ICD10 Code Usage
ICD10 code I83 is used in internal medicine, gastroenterology, hematology, vascular surgery, and primary care. It supports diagnosis, risk stratification, anticoagulation management, compression therapy, variceal bleeding intervention, and long-term follow-up of venous or lymphatic disorders.
Related Codes
- I80 – Phlebitis and thrombophlebitis
- I81 – Portal vein thrombosis
- I82 – Other venous embolism and thrombosis
- I85 – Esophageal varices
- I86 – Varicose veins of other sites
- I87 – Other disorders of veins
- I88 – Nonspecific lymphadenitis
- I89 – Other noninfective disorders of lymphatic vessels and lymph nodes
FAQs
Q1: What is ICD10 code I83?
A: It refers to Varicose veins of lower extremities, which includes clotting, inflammation, or dilation of veins, and lymph node or lymphatic vessel abnormalities.
Q2: What’s the difference between I80 and I82?
A: I80 refers to localized phlebitis or thrombophlebitis; I82 is used for embolism or thrombosis in deeper or unusual venous sites.
Q3: Are esophageal varices (I85) dangerous?
A: Yes—they can rupture and cause life-threatening gastrointestinal bleeding, especially in patients with cirrhosis.
Q4: What causes lymphadenitis (I88)?
A: Usually an immune or inflammatory response; it may be reactive, idiopathic, or associated with systemic illness.
Q5: Who manages these conditions?
A: Internists, vascular surgeons, gastroenterologists, hematologists, and infectious disease specialists based on the primary cause and presentation.
Conclusion
ICD10 code I83 ensures comprehensive tracking and management of Varicose veins of lower extremities, improving outcomes in patients with venous thrombotic events, varices, and lymphatic disorders through accurate documentation and care coordination.