2027 ICD-10-CM Diagnosis Code J11.1Influenza due to unidentified influenza virus with other respiratory manifestations
ICD-10-CM Codes›J00–J99›J09-J18›J11
- Billable — Valid for Submission
- Not Chronic
J11.1 is a billable ICD-10-CM diagnosis code for influenza due to unidentified influenza virus with other respiratory manifestations. It is valid on HIPAA claims for fiscal year 2027 (October 1, 2026 through September 30, 2027) and groups to MS-DRG 152 through 153. Coders also document this condition as bronchiolitis caused by influenza virus. 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.
- Bronchiolitis caused by influenza virus
- Healthcare associated influenza disease
- Inflammation of larynx caused by virus
- Influenza
- Influenza caused by seasonal influenza virus
- Influenza with laryngitis
- Influenza with pharyngitis
- Influenzal acute upper respiratory infection
- Upper respiratory tract infection caused by influenza virus
Instructional NotesGuidance
Instructions from the official ICD-10-CM Tabular List that apply to J11.1: its own notes plus those printed at 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 NOS
- Influenzal laryngitis NOS
- Influenzal pharyngitis NOS
- Influenza with upper respiratory symptoms NOS
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 J11.1, its category, or a range that includes it.
Excludes1 7
These codes carry an Excludes1 note naming J11.1: they are not reported together with it, unless the two conditions are unrelated.
- J00 Acute nasopharyngitis [common cold]influenza virus with other respiratory manifestations (J09.X2, J10.1, J11.1)
- J02.9 Acute pharyngitis, unspecifiedinfluenza virus with other respiratory manifestations (J09.X2, J10.1, J11.1)
- J03.9 Acute tonsillitis, unspecifiedinfluenza virus with other respiratory manifestations (J09.X2, J10.1, J11.1)
- J06 Acute upper respiratory infections of multiple and unspecified sitesinfluenza virus with other respiratory manifestations (J09.X2, J10.1, J11.1)
- J09 Influenza due to certain identified influenza virusesinfluenza due to unidentified influenza virus (J11.-) names J11.-, which includes this code
- J09 Influenza due to certain identified influenza virusesseasonal influenza due to unidentified influenza virus (J11.-) names J11.-, which includes this code
- J10 Influenza due to other identified influenza virusinfluenza due to unidentifed influenza virus (J11.-) names J11.-, which includes this code
Code First 1
These codes say to code first a condition named in the note, and J11.1 is one of the conditions named.
- J91.8 Pleural effusion in other conditions classified elsewhereinfluenza (J09.X2, J10.1, J11.1)
Code Also 2
These codes say J11.1 may also be needed to fully describe the condition. The note gives no sequencing direction.
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 J11.1 to ICD-9-CMHistory
The closest ICD-9-CM equivalents under the General Equivalence Mappings.
Code HistoryHistory
Questions About J11.1Overview
Is J11.1 (Influenza due to unidentified influenza virus) a billable code?
Yes. This is a billable ICD-10-CM code, specific enough to report influenza due to unidentified influenza virus with other respiratory manifestations on HIPAA-covered claims from October 1, 2026 through September 30, 2027.
What MS-DRG does J11.1 group to?
When influenza due to unidentified influenza virus with other respiratory manifestations is the principal diagnosis on an inpatient stay, it groups to MS-DRG 152, 153, with relative weights from 0.7420 to 1.1147 depending on complications. Higher weights mean higher Medicare reimbursement.
Does J11.1 need an additional code?
When the condition applies, yes. The Use Additional Code note reads: code for associated pleural effusion, if applicable (J91.8); code for associated sinusitis, if applicable (J01.-). The additional code is reported after J11.1.
What is the ICD-9 equivalent of J11.1?
Under the General Equivalence Mappings, influenza due to unidentified influenza virus with other respiratory manifestations converts to ICD-9-CM 487.1 (flu w resp manifest NEC). The mapping is approximate, so confirm the match fits the documentation.
