2026 ICD-10-CM Diagnosis Code J11.89Influenza due to unidentified influenza virus with other manifestations
ICD-10-CM Codes›J00–J99›J09-J18›J11
- Billable — Valid for Submission
- Not Chronic
J11.89 is a billable ICD-10-CM diagnosis code for influenza due to unidentified influenza virus with other manifestations. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026) and groups to MS-DRG 865 through 866. Coders also document this condition as death associated with influenza. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Influenza.
Code Identity
Code Classification
Approximate SynonymsGuidance
Alternate terms and clinical phrases that map to this code.
- Death associated with influenza
- Influenza with CNS disorder
- Influenza with non-respiratory manifestation
Tabular List NotesGuidance
Coding notes and annotation back-references applicable to this code.
Use Additional Code
- codes to identify the manifestations
The “use additional code” indicates that a secondary code could be used to further specify the patient’s condition. This note is not mandatory and is only used if enough information is available to assign an additional code.
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.
- Influenza(bronchial) (epidemic) (respiratory (upper)) (unidentified influenza virus)
- with
- specified manifestation NEC
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 J11.89 to ICD-9-CMHistory
The closest ICD-9-CM equivalents under the General Equivalence Mappings.
Code HistoryHistory
Questions About J11.89Overview
Is J11.89 a billable code?
Yes. This is a billable ICD-10-CM code, specific enough to report influenza due to unidentified influenza virus with other manifestations on HIPAA-covered claims from October 1, 2025 through September 30, 2026.
What MS-DRG does J11.89 group to?
When influenza due to unidentified influenza virus with other manifestations is the principal diagnosis on an inpatient stay, it groups to MS-DRG 865, 866, with relative weights from 0.8696 to 1.4983 depending on complications. Higher weights mean higher Medicare reimbursement.
What is the ICD-9 equivalent of J11.89?
Under the General Equivalence Mappings, influenza due to unidentified influenza virus with other manifestations converts to ICD-9-CM 487.8 (flu w manifestation NEC). 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.
