2027 ICD-10-CM Diagnosis Code I83.91Asymptomatic varicose veins of right lower extremity

ICD-10-CM Codes›I00–I99›I80-I89›I83

ICD-10-CM I83.91
CMSSource: CMS FY 2027 ICD-10-CM dataset · Effective Oct 1, 2026 – Sep 30, 2027

I83.91 is a billable ICD-10-CM diagnosis code for asymptomatic varicose veins of right lower extremity. It is valid on HIPAA claims for fiscal year 2027 (October 1, 2026 through September 30, 2027) and groups to MS-DRG 299 through 301. The code is restricted by the Medicare Code Editor to adult patients (age 15 through 124). In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Varicose veins of lower extremity.

Code Identity

ICD-10-CM Code
I83.91
Billable Status
Yes — Valid for Submission
Code Describes
Asymptomatic varicose veins of right lower extremity
Short Description
Asymptomatic varicose veins of right lower extremity
Same as the full description in the CMS dataset.
Parent Code
I83.9
Asymptomatic varicose veins of lower extremities

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 CodeI83.91Asymptomatic varicose veins of right lower extremity

Code EditsBilling

Medicare Code Editor checks that affect claim validity for I83.91.

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 vein of ankle region
  • Varicose vein of calf
  • Varicose vein of heel
  • Varicose vein of right ankle region
  • Varicose vein of right calf
  • Varicose vein of right foot
  • Varicose vein of right heel
  • Varicose vein of right lower leg
  • Varicose vein of right thigh
  • Varicose vein of thigh
  • Varicose veins of right lower limb

Instructional NotesGuidance

Instructions from the official ICD-10-CM Tabular List that apply to I83.91: its own notes plus those printed at I83 and Chapter 9. A note printed at a category, block or chapter applies to every code under it.

Excludes2

Not included here: the excluded condition is not part of this code, but a patient may have both, so both codes may be reported.

From I83 Varicose veins of lower extremities applies to 57 codes
  • varicose veins complicating pregnancy (O22.0-)
  • varicose veins complicating the puerperium (O87.4)
From Chapter 9 (I00-I99) Diseases of the circulatory system applies to 1,433 codes
  • certain conditions originating in the perinatal period (P04-P96)
  • certain infectious and parasitic diseases (A00-B99)
  • complications of pregnancy, childbirth and the puerperium (O00-O9A)
  • congenital malformations, deformations, and chromosomal abnormalities (Q00-Q99)
  • endocrine, nutritional and metabolic diseases (E00-E88)
  • injury, poisoning and certain other consequences of external causes (S00-T88)
  • neoplasms (C00-D49)
  • symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)
  • systemic connective tissue disorders (M30-M36)
  • transient cerebral ischemic attacks and related syndromes (G45.-)

Source: CMS ICD-10-CM Tabular List. How to read instructional notes.

Referenced in Other NotesGuidance

Instructional notes printed at other codes that name I83.91, its category, or a range that includes it.

Excludes1 2

These codes carry an Excludes1 note naming I83.91: they are not reported together with it, unless the two conditions are unrelated.

  • I86 Varicose veins of other sites
    varicose veins of unspecified site (I83.9-) names I83.9-, which includes this code
  • I87.3 Chronic venous hypertension (idiopathic)
    varicose veins of lower extremities (I83.-) names I83.-, which includes this code

Excludes2 2

These codes carry an Excludes2 note naming I83.91: its condition is not part of those codes, and both may be reported when the patient has both.

  • L98.4 Non-pressure chronic ulcer of skin, not elsewhere classified
    varicose ulcer (I83.0-I83.93) names I83.0-I83.93, which includes this code
  • L98.A Non-pressure chronic ulcer of upper limb, not elsewhere classified
    varicose ulcer (I83.0-I83.93) names I83.0-I83.93, which includes this code

Index to Diseases and InjuriesGuidance

Alphabetical index entries that point to this code.

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 I83.91 to ICD-9-CMHistory

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

ICD-9-CM
454.9 Asympt varicose veins
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 2017–2026No changes
FY 2027CurrentCurrent code set, no changesEffective October 1, 2026 through September 30, 2027.

Questions About I83.91Overview

What is the ICD-10 code for asymptomatic varicose veins of right lower extremity?

The ICD-10-CM code for asymptomatic varicose veins of right lower extremity is I83.91 (sometimes written as I8391). It is billable on HIPAA-covered claims from October 1, 2026 through September 30, 2027.

Is I83.91 (Asymptomatic varicose veins of lower extremities) a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report asymptomatic varicose veins of right lower extremity on HIPAA-covered claims from October 1, 2026 through September 30, 2027.

What MS-DRG does I83.91 group to?

When asymptomatic varicose veins of right lower extremity is the principal diagnosis on an inpatient stay, it groups to MS-DRG 301, 300, 299, with relative weights from 0.7132 to 1.5840 depending on complications. Higher weights mean higher Medicare reimbursement.

Who can I83.91 be reported for?

The Medicare Code Editor checks asymptomatic varicose veins of right lower extremity 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 I83.91?

Under the General Equivalence Mappings, asymptomatic varicose veins of right lower extremity converts to ICD-9-CM 454.9 (asympt varicose veins). The mapping is approximate, so confirm the match fits the documentation.