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ICD-10-CM 2027 diagnosis code

J11.2Influenza due to unidentified influenza virus with gastrointestinal manifestations

✓ Billable / specific

J11.2 is a valid, billable ICD-10-CM code for influenza due to unidentified influenza virus with gastrointestinal manifestations. It can be reported on claims for dates of service from October 1, 2026 – September 30, 2027.Short description: Influenza due to unidentified influenza virus w GI manifest

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 J11.2

J11.2 is the ICD-10-CM diagnosis code for influenza due to unidentified influenza virus with gastrointestinal manifestations. It belongs to category J11 (influenza due to unidentified influenza virus), block J09-J18 (influenza and pneumonia) and chapter 10 (diseases of the respiratory 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 J11 (influenza due to unidentified influenza virus), J11.2 is specifically for influenza due to unidentified influenza virus with gastrointestinal manifestations. Related codes cover with pneumonia (J11.0), with other respiratory manifestations (J11.1) and with other manifestations (J11.8).

Don't report J11.2 together with the conditions in its Excludes1 note: 'intestinal flu' [viral gastroenteritis] (A08.-).

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 865 (Viral Illness with MCC, relative weight 1.3485) and DRG 866 (Viral Illness without MCC, relative weight 0.8692), in MDC 18 (Infectious and Parasitic Diseases, Systemic or Unspecified Sites), 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 487.8 (influenza with other manifestations).

Coding notes

Applicable toConditions and synonyms classified to this code
  • Influenza gastroenteritis NOS
Excludes1Not coded here — never report together with this code
  • 'intestinal flu' [viral gastroenteritis] (A08.-)

Notes that apply from higher levels

Instructions written at a parent level also apply to J11.2.

Broader instructions also apply from J09-J18 Influenza and pneumonia and Chapter 10: Diseases of the respiratory system.

Alphabetic index entries

4 entries

Terms in the official ICD-10-CM index that lead to J11.2.

Codes whose notes reference J11.2

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.

MDC 18 · Infectious and Parasitic Diseases, Systemic or Unspecified Sites

ICD-9-CM equivalent

Converter →
  • 487.8Influenza with other manifestationsapproximate

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 J11.2

Is J11.2 billable?

Yes. J11.2 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).

Can J11.2 be used as a principal diagnosis?

Yes. The Medicare Code Editor doesn't restrict J11.2 as a principal diagnosis.

Is J11.2 a CC or MCC?

No. J11.2 is neither a CC nor an MCC under MS-DRG v44.0.

What DRG does J11.2 group to?

J11.2 is used in the MS-DRG v44.0 logic for MS-DRG 865 (Viral Illness with MCC) and MS-DRG 866 (Viral Illness without 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 J11.2?

The CMS General Equivalence Mappings map J11.2 to ICD-9-CM 487.8.