2027 ICD-10-CM Diagnosis Code J09.X3Influenza due to identified novel influenza A virus with gastrointestinal manifestations
ICD-10-CM Codes›J00–J99›J09-J18›J09
- Billable — Valid for Submission
- Not Chronic
J09.X3 is a billable ICD-10-CM diagnosis code for influenza due to identified novel influenza A virus with gastrointestinal manifestations. It is valid on HIPAA claims for fiscal year 2027 (October 1, 2026 through September 30, 2027) and groups to MS-DRG 865 through 866. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Influenza.
Code Identity
Code Classification
Instructional NotesGuidance
Instructions from the official ICD-10-CM Tabular List that apply to J09.X3: its own notes plus those printed at J09, block J09-J18, and Chapter 10. A note printed at a category, block or chapter applies to every code under it.
Applicable To
Conditions this code is used for: synonyms of the title or, for "other specified" codes, the conditions assigned to it. The list is not exhaustive.
- Influenza due to identified novel influenza A virus gastroenteritis
Excludes1
Not coded here: the excluded code is never reported together with this one, unless the two conditions are unrelated.
- 'intestinal flu' [viral gastroenteritis] (A08.-)
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.
- 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)
- smoke inhalation (T59.81-)
- symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)
Use Additional Code
Add a second code, after this one, to fully describe the condition.
- code, if applicable, to identify resistance to antimicrobial drugs (Z16.-)
Notes
General instructions on how these codes are used.
- When a respiratory condition is described as occurring in more than one site and is not specifically indexed, it should be classified to the lower anatomic site (e.g. tracheobronchitis to bronchitis in J40).
Source: CMS ICD-10-CM Tabular List. How to read instructional notes.
Referenced in Other NotesGuidance
Instructional notes printed at other codes that name J09.X3, its category, or a range that includes it.
Applicable To 1
These notes mention J09.X3.
Excludes1 3
These codes carry an Excludes1 note naming J09.X3: they are not reported together with it, unless the two conditions are unrelated.
- A08 Viral and other specified intestinal infectionsinfluenza with involvement of gastrointestinal tract (J09.X3, J10.2, J11.2)
- J10 Influenza due to other identified influenza virusinfluenza due to avian influenza virus (J09.X-) names J09.X-, which includes this code
- J10 Influenza due to other identified influenza virusinfluenza due to swine flu (J09.X-) names J09.X-, which includes this code
Excludes2 1
These codes carry an Excludes2 note naming J09.X3: its condition is not part of those codes, and both may be reported when the patient has both.
- Block P35-P39 Infections specific to the perinatal periodinfectious diseases not specific to the perinatal period (A00-B99, J09, J10.-) names J09, 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.
Patient EducationClinical
Flu
The flu, also called influenza, is a respiratory infection caused by viruses. Each year, millions of Americans get sick with the flu. Sometimes it causes mild illness. But it can also be serious or even deadly, especially for people over 65, newborn babies, and people with certain chronic illnesses.
The full article covers:
- What is the flu?
- What causes the flu?
- What are the symptoms of the flu?
- What other problems can the flu cause?
- How is the flu diagnosed?
- What are the treatments for the flu?
- Can the flu be prevented?
Read the full article at MedlinePlus
Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.
Convert J09.X3 to ICD-9-CMHistory
Code HistoryHistory
Questions About J09.X3Overview
Is J09.X3 (Influenza due to identified novel influenza A virus) a billable code?
Yes. This is a billable ICD-10-CM code, specific enough to report influenza due to identified novel influenza A virus with gastrointestinal manifestations on HIPAA-covered claims from October 1, 2026 through September 30, 2027.
What MS-DRG does J09.X3 group to?
When influenza due to identified novel influenza A virus with gastrointestinal manifestations is the principal diagnosis on an inpatient stay, it groups to MS-DRG 866, 865, with relative weights from 0.8691 to 1.3153 depending on complications. Higher weights mean higher Medicare reimbursement.
Can J09.X3 be reported with a code from A08?
Not as a rule. The Excludes1 note on J09.X3 lists "'intestinal flu' [viral gastroenteritis] (A08.-)". An Excludes1 note means the excluded code is never reported together with this one; the only exception is when the two conditions are unrelated to each other (Official Guidelines, Section I.A.12.a).
What is the ICD-9 equivalent of J09.X3?
Under the General Equivalence Mappings, influenza due to identified novel influenza A virus with gastrointestinal manifestations converts to ICD-9-CM 488.09 (flu dt avian manfest NEC) and 488.89 (flu dt novel A w oth man). The mapping is approximate, so confirm the match fits the documentation.
