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ICD-10-CM 2027 diagnosis code

I86.4Gastric varices

✓ Billable / specific

I86.4 is a valid, billable ICD-10-CM code for gastric varices. It can be reported on claims for dates of service from October 1, 2026 – September 30, 2027.

Looking up by condition? See ICD-10 code for Gastric varix, ICD-10 code for Stomach varix.

Code unchanged since ICD-10-CM took effect on October 1, 2015. Source: official FY2027 ICD-10-CM release from CDC/NCHS and CMS. Page updated September 29, 2026. About our data

About I86.4

I86.4 is the ICD-10-CM diagnosis code for gastric varices. It belongs to category I86 (varicose veins of other sites), block I80-I89 (diseases of veins, lymphatic vessels and lymph nodes, not elsewhere classified) and chapter 9 (diseases of the circulatory system). It is billable, so it can be reported on its own for dates of service from October 1, 2026 through September 30, 2027.

Within I86 (varicose veins of other sites), I86.4 is specifically for gastric varices. Related codes cover sublingual varices (I86.0), scrotal varices (I86.1), pelvic varices (I86.2), Vulval varices (I86.3) and varicose veins of other specified sites (I86.8).

It is not a CC or MCC, so as a secondary diagnosis it doesn't change the MS-DRG severity level.

In MS-DRG v44.0, it is part of the grouping logic for DRG 299 (Peripheral Vascular Disorders with MCC, relative weight 1.5842), DRG 300 (Peripheral Vascular Disorders with CC, relative weight 1.0464) and DRG 301 (Peripheral Vascular Disorders without CC/MCC, relative weight 0.7133), in MDC 05 (Diseases and Disorders of the Circulatory System), as a principal or secondary diagnosis. The DRG a claim lands in depends on the principal diagnosis, procedures and any CC/MCC secondary diagnoses.

It has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.

Before ICD-10, this condition was coded in ICD-9-CM as 456.8 (varices of other sites).

Notes that apply from higher levels

Instructions written at a parent level also apply to I86.4.

› From I86 Varicose veins of other sites
Excludes1
  • varicose veins of unspecified site (I83.9-)
Excludes2

Broader instructions also apply from Chapter 9: Diseases of the circulatory system.

Alphabetic index entries

2 entries

Terms in the official ICD-10-CM index that lead to I86.4.

MS-DRG v44.0 grouping

All DRGs →

Inpatient MS-DRGs this diagnosis can group to, as the principal or a secondary diagnosis, depending on the rest of the claim.

ICD-9-CM equivalent

Converter →
  • 456.8Varices of other sitesapproximate

From the CMS 2018 General Equivalence Mappings (GEMs), the final GEMs release.

Code history

  1. 2016
  2. 2017
  3. 2018
  4. 2019
  5. 2020
  6. 2021
  7. 2022
  8. 2023
  9. 2024
  10. 2025
  11. 2026
  12. 2027
  • FY2016 (effective 10/1/2015): Added (first year of ICD-10-CM)
  • No changes since FY2016.

Common questions about I86.4

Is I86.4 billable?

Yes. I86.4 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).

Can I86.4 be used as a principal diagnosis?

Yes. The Medicare Code Editor doesn't restrict I86.4 as a principal diagnosis.

Is I86.4 a CC or MCC?

No. I86.4 is neither a CC nor an MCC under MS-DRG v44.0.

What DRG does I86.4 group to?

I86.4 is used in the MS-DRG v44.0 logic for MS-DRG 299 (Peripheral Vascular Disorders with MCC), MS-DRG 300 (Peripheral Vascular Disorders with CC) and MS-DRG 301 (Peripheral Vascular Disorders without CC/MCC). Which one applies depends on whether it is the principal diagnosis and on the rest of the claim.

What is the ICD-9 code for I86.4?

The CMS General Equivalence Mappings map I86.4 to ICD-9-CM 456.8.