2026 ICD-10-CM Diagnosis Code J10.1Influenza due to other identified influenza virus with other respiratory manifestations
ICD-10-CM Codes›J00–J99›J09-J18›J10
- Billable — Valid for Submission
- Not Chronic
J10.1 is a billable ICD-10-CM diagnosis code for influenza due to other identified influenza virus with other respiratory manifestations. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026) and groups to MS-DRG 193 through 195. Coders also document this condition as influenza A virus untyped strain present. 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.
- Influenza A virus untyped strain present
- Influenza B virus present
- Influenza caused by Influenza A virus subtype H1N1
- Influenza caused by Influenza B virus
- Influenza caused by Influenza C virus
- Influenza caused by pandemic influenza virus
- Upper respiratory tract infection caused by Influenza A virus
- Upper respiratory tract infection caused by Influenza A virus subtype H1N1
- Upper respiratory tract infection caused by influenza virus
Tabular List NotesGuidance
Coding notes and annotation back-references applicable to this code.
Inclusion Terms
- Influenza due to other identified influenza virus NOS
- Influenza due to other identified influenza virus with laryngitis
- Influenza due to other identified influenza virus with pharyngitis
- Influenza due to other identified influenza virus with upper respiratory symptoms
Use Additional Code
- code for associated pleural effusion, if applicable J91.8
These terms are the conditions for which that code is to be used. The terms may be synonyms of the code title, or, in the case of "other specified" codes, the terms are a list of the various conditions assigned to that code. The inclusion terms are not necessarily exhaustive. Additional terms found only in the Alphabetic Index may also be assigned to a code.
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.
- Influenza (bronchial) (epidemic) (respiratory (upper)) (unidentified influenza virus) - J11.1
- due to
- identified influenza virus NEC - J10.1
- with
- laryngitis - J10.1
- pharyngitis - J10.1
- respiratory manifestations NEC - J10.1
- novel (2009) H1N1 influenza - See Also: Influenza, due to, identified influenza virus NEC; - J10.1
- novel influenza A/H1N1 - See Also: Influenza, due to, identified influenza virus NEC; - J10.1
External Cause of Injuries IndexGuidance
References for this code in the External Cause of Injuries Index.
- Influenza(bronchial) (epidemic) (respiratory (upper)) (unidentified influenza virus)
- due to
- identified influenza virus NEC
- Influenza(bronchial) (epidemic) (respiratory (upper)) (unidentified influenza virus)
- due to
- identified influenza virus NEC
- with
- laryngitis
- Influenza(bronchial) (epidemic) (respiratory (upper)) (unidentified influenza virus)
- due to
- identified influenza virus NEC
- with
- pharyngitis
- Influenza(bronchial) (epidemic) (respiratory (upper)) (unidentified influenza virus)
- due to
- identified influenza virus NEC
- with
- respiratory manifestations NEC
- Influenza(bronchial) (epidemic) (respiratory (upper)) (unidentified influenza virus)
- novel (2009) H1N1 influenza
- Influenza(bronchial) (epidemic) (respiratory (upper)) (unidentified influenza virus)
- novel influenza A/H1N1
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 J10.1 to ICD-9-CMHistory
Code HistoryHistory
Questions About J10.1Overview
Is J10.1 (Influenza due to other identified influenza virus) a billable code?
Yes. This is a billable ICD-10-CM code, specific enough to report influenza due to other identified influenza virus with other respiratory manifestations on HIPAA-covered claims from October 1, 2025 through September 30, 2026.
What MS-DRG does J10.1 group to?
When influenza due to other identified influenza virus with other respiratory manifestations is the principal diagnosis on an inpatient stay, it groups to MS-DRG 193, 194, 195, with relative weights from 0.6285 to 1.3144 depending on complications. Higher weights mean higher Medicare reimbursement.
What is the ICD-9 equivalent of J10.1?
Under the General Equivalence Mappings, influenza due to other identified influenza virus with other respiratory manifestations converts to ICD-9-CM 487.1 (flu w resp manifest NEC) and 488.12 (Flu-2009 H1N1 w oth resp). 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.
