2026 ICD-10-CM Diagnosis Code I83.018Varicose veins of right lower extremity with ulcer other part of lower leg

ICD-10-CM Codes›I00–I99›I80-I89›I83

ICD-10-CM I83.018
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

I83.018 is a billable ICD-10-CM diagnosis code for varicose veins of right lower extremity with ulcer other part of lower leg. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026) and groups to MS-DRG 299 through 301. The code is restricted by the Medicare Code Editor to adult patients (age 15 through 124). Coders also document this condition as varicose ulcer of lower leg. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Varicose veins of lower extremity.

Code Identity

ICD-10-CM Code
I83.018
Billable Status
Yes — Valid for Submission
Code Describes
Varicose veins of right lower extremity with ulcer other part of lower leg
Short Description
Varicose veins of r low extrem w ulcer oth part of lower leg
Parent Code
I83.01
Varicose veins of right lower extremity with ulcer

Code Classification

ChapterI00–I99Diseases of the circulatory system
SectionI80-I89Diseases of veins, lymphatic vessels and lymph nodes, not elsewhere classified
CategoryI83Varicose veins of lower extremities
This CodeI83.018Varicose veins of right lower extremity with ulcer other part of lower leg

Code EditsBilling

Medicare Code Editor checks that affect claim validity for I83.018.

Adult diagnoses
The Medicare Code Editor detects inconsistencies in adult cases by checking a patient's age and any diagnosis on the patient's record. The adult code edits apply to patients age range is 15–124 years inclusive (e.g., senile delirium, mature cataract).

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Varicose ulcer of lower leg
  • Varicose ulcer of right lower leg
  • Varicose vein of right lower leg
  • Venous ulcer of right lower leg

Index to Diseases and InjuriesGuidance

Alphabetical index entries that point to this code.

External Cause of Injuries IndexGuidance

References for this code in the External Cause of Injuries Index.

    • Varix(lower limb)
      • leg (asymptomatic)
        • right (asymptomatic)
          • with
            • ulcer
              • lower leg NEC

Clinical ClassificationClinical

AHRQ’s CCSR groups this code into broader clinical categories.

CCSR CIR035
Varicose veins of lower extremity
Default principal diagnosis: inpatient Yes · outpatient Yes

Patient EducationClinical

Varicose Veins

Varicose veins are swollen, twisted veins that you can see just under the skin. They usually occur in the legs, but also can form in other parts of the body. Hemorrhoids are a type of varicose vein.

Read the full article at MedlinePlus

Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.

Convert I83.018 to ICD-9-CMHistory

The closest ICD-9-CM equivalents under the General Equivalence Mappings.

ICD-9-CM
454.0 Leg varicosity w ulcer
Approximate The match is approximate rather than exact.

Code HistoryHistory

FY 2016AddedAdded to the ICD-10-CM code setEffective October 1, 2015, the first year of ICD-10-CM.
FY 2017–2025No changes
FY 2026CurrentCurrent code set, no changesEffective October 1, 2025 through September 30, 2026.

Questions About I83.018Overview

Is I83.018 (Varicose veins of right lower extremity with ulcer) a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report varicose veins of right lower extremity with ulcer other part of lower leg on HIPAA-covered claims from October 1, 2025 through September 30, 2026.

What MS-DRG does I83.018 group to?

When varicose veins of right lower extremity with ulcer other part of lower leg is the principal diagnosis on an inpatient stay, it groups to MS-DRG 299, 300, 301, with relative weights from 0.7197 to 1.6327 depending on complications. Higher weights mean higher Medicare reimbursement.

Who can I83.018 be reported for?

The Medicare Code Editor checks varicose veins of right lower extremity with ulcer other part of lower leg against patient demographics: this code is intended for adult patients (age 15 through 124). Claims outside these limits are flagged as inconsistent.

What is the ICD-9 equivalent of I83.018?

Under the General Equivalence Mappings, varicose veins of right lower extremity with ulcer other part of lower leg converts to ICD-9-CM 454.0 (leg varicosity w ulcer). The mapping is approximate, so confirm the match fits the documentation.

Footnotes

[1] Not chronic - A diagnosis code that does not fit the criteria for chronic condition (duration, ongoing medical treatment, and limitations) is considered not chronic. Some codes designated as not chronic are acute conditions. Other diagnosis codes that indicate a possible chronic condition, but for which the duration of the illness is not specified in the code description (i.e., we do not know the condition has lasted 12 months or longer) also are considered not chronic.