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J09.X2 ICD-10-CM Code: Influenza due to identified novel influenza A virus with other respiratory manifestations

Billing Status: YES. This is a valid, specific, and billable ICD-10-CM reference.

Coding at a Glance

Tabular directives
4 inclusion terms · 5 Excludes1 · 9 Excludes2 · 4 use-additional codes

Inpatient Payment Groups (MS-DRG)

Potential MS-DRG participation — not a DRG assignment.

MS-DRGs this diagnosis helps define, as principal or secondary, per the CMS ICD-10-CM/PCS MS-DRG Definitions Manual v43, Appendix B.

  • MS-DRG 193 — SIMPLE PNEUMONIA AND PLEURISY WITH MCC (MDC 04)
  • MS-DRG 194 — SIMPLE PNEUMONIA AND PLEURISY WITH CC (MDC 04)
  • MS-DRG 195 — SIMPLE PNEUMONIA AND PLEURISY WITHOUT CC/MCC (MDC 04)
  • MS-DRG 791 — PREMATURITY WITH MAJOR PROBLEMS (MDC 15)
  • MS-DRG 793 — FULL TERM NEONATE WITH MAJOR PROBLEMS (MDC 15)

A diagnosis appearing in a group's logic does not by itself determine the DRG assigned to a stay; the grouper uses the full claim.

Coding instructions

Official Tabular Instructional Notes: the inclusion, exclusion and sequencing notes published for J09.X2 in the official ICD-10-CM tabular list, quoted as published.

Source: CMS/CDC — ICD-10-CM Tabular ListRelease: FY2026Effective: October 1, 2025

Notes without a marker are published on J09.X2 itself; “inherited from” names the category or block whose note applies here.

Inclusion Terms

Alternative terms the tabular list files under this code.

  • Influenza due to identified novel influenza A virus NOS
  • Influenza due to identified novel influenza A virus with laryngitis
  • Influenza due to identified novel influenza A virus with pharyngitis
  • Influenza due to identified novel influenza A virus with upper respiratory symptoms

Excludes1 — Not Coded Here

Conditions generally not reported together with this code (Excludes1) -- an error unless the two conditions are documented as unrelated to each other (ICD-10-CM Official Guidelines, Section I.A.12.a).

Source: inherited from J09

Excludes2 — Not Included Here

Conditions not covered by this code, but which may be reported alongside it when both are present.

Source: inherited from J09-J18

Use Additional Code

Supplementary codes the tabular list directs you to add.

  • Use additional code, if applicable, for associated:
  • pleural effusion (J91.8)
  • sinusitis (J01.-)
  • Use additional code, if applicable, to identify resistance to antimicrobial drugs (Z16.-) inherited from J09-J18

Coder workflow for J09.X2

MedCoder structured workflow — derived from this code’s own official record

Before you code J09.X2

  1. J09.X2’s title joins a condition with an associated condition or complication. Confirm each component is documented. Where the classification presumes the link through the “with” convention, only a provider statement that the conditions are unrelated defeats it. A combination code is assigned only when it fully identifies the documented conditions; a required second code for the stage, type or manifestation is still reported when the notes ask for it (Guidelines I.B.9, I.A.15).

    Guide: Combination codes →

  2. Check the Excludes1 note: if the documentation supports a condition named there, do not simply proceed with J09.X2. Excludes1 conditions are not reported together with this code unless the record shows they are unrelated (Guidelines I.A.12.a).

    See the official tabular notes

Choose the right path

  1. Does the documentation support a condition named in J09.X2’s Excludes1 note?
    Yes → Do not simply proceed: review the excluded code. Both are reported only when the record shows the two conditions are unrelated.
    No → Continue.

    ReviewJ10, J11

Consider J09.X2. Then work the Use Additional Code note, and confirm the code is valid for the date of service in the Verify section.

Documentation check

The provider’s diagnostic statement
Codes are assigned from the provider’s documented diagnosis, not from clinical criteria, test values or a medication list (Guidelines I.A.19).
The associated condition or complication
Whether the associated condition the title names is documented; the “with” convention presumes some links, and a provider statement that the conditions are unrelated defeats it (Guidelines I.A.15).
The conditions the Use Additional Code note names
Reported with this code when documented; a conditional instruction (“if applicable”, “if known”) applies only when the record supports it.

Official instructions as workflow

  • Excludes1 — check before selecting J09.X2(5 notes)

    Coding workflow: If the documentation supports a condition named in this note, do not simply proceed with J09.X2: the two are not reported together. The one exception is when the record shows the two conditions are unrelated to each other.

    CompareJ10, J11

    See the official tabular notes · Guidelines I.A.12.a

  • Excludes2 — not part of J09.X2(9 notes)

    Coding workflow: The conditions named in this note are not included in J09.X2. When the record documents both, both may be reported; the note is a boundary, not a prohibition.

    CompareJ82, J69.0, P24.01, P24, J69, P23.9

    See the official tabular notes · Guidelines I.A.12.b

  • Use Additional Code — after identifying J09.X2(4 notes)

    Coding workflow: Check whether the documentation supports the additional code(s) the note names, and report them with J09.X2 when it does. Where the instruction is conditional (“if applicable”, “if known”), it applies only when the record documents the condition.

    ReviewJ91.8, J01, Z16

    See the official tabular notes · Guidelines I.A.13

Coding decision scenarios

Pattern scenarios for this code’s structure — decision rules, not clinical cases

Documentation: Both the condition J09.X2 describes and a condition named in its Excludes1 note are documented for the same encounter.

Coding question: Can both codes be reported?

Path: Review the Excludes1 note and the excluded code, and look for a provider statement on whether the two conditions are related.

Reason: Excludes1 means the two are not coded together; the exception is when the record shows the conditions are unrelated to each other (Guidelines I.A.12.a).

ReviewJ10, J11

Documentation: Only one of the components this code’s title joins is documented.

Coding question: Is J09.X2 supported?

Path: Review the code for the documented component on its own.

Reason: A combination code is assigned only when it fully identifies the documented conditions; otherwise the documented component takes its own code (Guidelines I.B.9).

Documentation: A condition the Use Additional Code note names is documented.

Coding question: Is a second code reported with J09.X2?

Path: Review the Use Additional Code note and the code it names.

Reason: The additional code is reported when the record documents the condition; a conditional instruction applies only when its condition is met (Guidelines I.A.13).

ReviewJ91.8, J01, Z16

Every row is derived from this code’s own record — its title, tabular notes, 7th-character family and same-category siblings — with fixed MedCoder wording; nothing is inferred about a patient. The official notes and guideline text are in the sections each row links to, and they control.

Code Overview

Influenza due to identified novel influenza A virus with other respiratory manifestations is a billable ICD-10-CM diagnosis code (J09.X2).

MedCoder summary Summary composed by MedCoder from this code's official ICD-10-CM record. The tabular instructional notes themselves appear verbatim below.

Indexed Clinical Terms (15)

Official source data — entries quoted as published, in the Index’s own lookup phrasing

Clinical term phrases from the official ICD-10-CM Index to Diseases and Injuries that map to this code. These are alphabetic-index entries shown as the Index writes them — lookup phrasing, not necessarily the wording of a final diagnosis.

Official Coding Guidelines

Official source data — quoted verbatim from the CMS/NCHS Official Guidelines

Official source data — quoted verbatim from the CMS/NCHS Official Guidelines

Verbatim excerpts from the ICD-10-CM Official Guidelines for Coding and Reporting (CMS/NCHS) that govern this code.

Chapter 10: Diseases of the Respiratory System (J00-J99), U07.0 a. Chronic Obstructive Pulmonary Disease [COPD] and Asthma 1) Acute exacerbation of chronic obstructive bronchitis and asthma

c. Influenza due to certain identified influenza viruses Code only confirmed cases of influenza due to certain identified influenza viruses (category J09), and due to other identified influenza virus (category J10). This is an exception to the hospital inpatient guideline Section II, H. (Uncertain Diagnosis).

Chapter 10: Diseases of the Respiratory System (J00-J99), U07.0 a. Chronic Obstructive Pulmonary Disease [COPD] and Asthma 1) Acute exacerbation of chronic obstructive bronchitis and asthma

In this context, “confirmation” does not require documentation of positive laboratory testing specific for avian or other novel influenza A or other identified influenza virus. However, coding should be based on the provider’s diagnostic statement that the patient has avian influenza, or other novel influenza A, for category J09, or has another particular identified strain of influenza, such as H1N1 or H3N2, but not identified as novel or variant, for category J10.

Chapter 10: Diseases of the Respiratory System (J00-J99), U07.0 a. Chronic Obstructive Pulmonary Disease [COPD] and Asthma 1) Acute exacerbation of chronic obstructive bronchitis and asthma

If the provider records “suspected” or “possible” or “probable” avian influenza, or novel influenza, or other identified influenza, then the appropriate influenza code from category J11, Influenza due to unidentified influenza virus, should be assigned. A code from category J09, Influenza due to certain identified influenza viruses, should not be assigned nor should a code from category J10, Influenza due to other identified influenza virus.

Decision Points

The directives on this code's own record, as a pre-claim checklist.

  1. 4 Use Additional Code instructions — report the named additional code(s) when the documentation supports them. See the Use Additional Code notes
  2. 5 Excludes1 entries — codes named there are generally not reported together with this code (Guidelines I.A.12.a). See the Excludes1 notes
  3. 9 Excludes2 entries — those conditions are not part of this code and may be reported additionally when documented. See the Excludes2 notes

Checklist rows are derived from this code's own official directives; the wording of each check is MedCoder editorial. The official notes themselves are in the sections each row links to.

Verify Before Coding

  • No Medicare Code Editor or MS-DRG Definitions Manual restrictions apply to this code.

From the code registry, the Medicare Code Editor, and the MS-DRG Definitions Manual. Check it against a full claim in Claim Check.

Relationships & Classification

MedCoder structured relationships — computed from published CMS and AHRQ datasets

Other codes that name J09.X2 or its code family, from the CMS ICD-10-CM tabular instructional notes. Tabular-note edges are stored at the code family level that carries each note.

Referenced by 5 Excludes1 notes: J00 — Acute nasopharyngitis [common cold], J02.9 — Acute pharyngitis, unspecified, J03.9 — Acute tonsillitis, unspecified, J06 — Acute upper respiratory infections of multiple and unspecified sites, J10 — Influenza due to other identified influenza virus (via J09.X.-).

These codes’ tabular lists mark this diagnosis as mutually exclusive — not reported together unless the conditions are documented as unrelated.

Referenced by 1 Code First instruction: J91.8 — Pleural effusion in other conditions classified elsewhere.

Each of these codes carries a Code First note naming this condition — when that code is reported, THIS code is sequenced first, ahead of it.

Referenced by 2 Code Also instructions: J04 — Acute laryngitis and tracheitis, J05 — Acute obstructive laryngitis [croup] and epiglottitis.

These codes suggest coding this condition alongside when both are present.

MS-DRG Grouper Relationships (FY2026)

Potential MS-DRG participation — not a DRG assignment.

FY2026 MS-DRG: not on the CMS CC/MCC list — as a secondary diagnosis this code does not change MS-DRG severity for that release.

Named in the grouper logic of 5 MS-DRGs: DRG 193 (MDC 04), DRG 194 (MDC 04), DRG 195 (MDC 04), DRG 791 (MDC 15), DRG 793 (MDC 15).

From the CMS MS-DRG Definitions Manual (Appendices B and C). Actual DRG assignment depends on the complete claim.

Clinical classification (AHRQ CCSR):RSP003 — Influenza (default).

Clinical Classifications Software Refined (CCSR) for ICD-10-CM Diagnoses. Healthcare Cost and Utilization Project (HCUP), Agency for Healthcare Research and Quality.

Related Codes

Same clinical category (CCSR)

AHRQ's Clinical Classifications Software groups these diagnoses under the same clinical category (Influenza).

J09.X1 — Influenza due to identified novel influenza A virus with pneumonia, J09.X3 — Influenza due to identified novel influenza A virus with gastrointestinal manifestations, J09.X9 — Influenza due to identified novel influenza A virus with other manifestations, J10.00 — Influenza due to other identified influenza virus with unspecified type of pneumonia, J10.01 — Influenza due to other identified influenza virus with the same other identified influenza virus pneumonia, J10.08 — Influenza due to other identified influenza virus with other specified pneumonia, J10.1 — Influenza due to other identified influenza virus with other respiratory manifestations, J10.2 — Influenza due to other identified influenza virus with gastrointestinal manifestations, J10.81 — Influenza due to other identified influenza virus with encephalopathy, J10.82 — Influenza due to other identified influenza virus with myocarditis, J10.83 — Influenza due to other identified influenza virus with otitis media, J10.89 — Influenza due to other identified influenza virus with other manifestations, J11.00 — Influenza due to unidentified influenza virus with unspecified type of pneumonia, J11.08 — Influenza due to unidentified influenza virus with specified pneumonia, J11.1 — Influenza due to unidentified influenza virus with other respiratory manifestations, J11.2 — Influenza due to unidentified influenza virus with gastrointestinal manifestations, J11.81 — Influenza due to unidentified influenza virus with encephalopathy, J11.82 — Influenza due to unidentified influenza virus with myocarditis, J11.83 — Influenza due to unidentified influenza virus with otitis media, J11.89 — Influenza due to unidentified influenza virus with other manifestations

Same Index main term, other category

The ICD-10-CM Index to Diseases and Injuries files this code under the main terms “Influenza”, “Virus, viral”, “Flu”; these codes share that main term but sit in a different category of the Tabular List.

A08.4 — Viral intestinal infection, unspecified (intestinal NEC), A92.30 — West Nile virus infection, unspecified (West Nile), A92.31 — West Nile virus infection with encephalitis (West Nile, with, encephalitis), A92.32 — West Nile virus infection with other neurologic manifestation (West Nile, with, optic neuritis), A92.39 — West Nile virus infection with other complications (West Nile, with, complications NEC), B25.9 — Cytomegaloviral disease, unspecified (cytomegalovirus), B34.8 — Other viral infections of unspecified site (specified NEC), B97.4 — Respiratory syncytial virus as the cause of diseases classified elsewhere (respiratory syncytial, as cause of disease classified elsewhere), B97.89 — Other viral agents as the cause of diseases classified elsewhere (as cause of disease classified elsewhere), J06.9 — Acute upper respiratory infection, unspecified (respiratory syncytial, upper respiratory infection), J10 — Influenza due to other identified influenza virus (B), J10.00 — Influenza due to other identified influenza virus with unspecified type of pneumonia (due to, identified influenza virus NEC, with, pneumonia), J10.01 — Influenza due to other identified influenza virus with the same other identified influenza virus pneumonia (due to, identified influenza virus NEC, with, pneumonia, with same identified influenza virus), J10.08 — Influenza due to other identified influenza virus with other specified pneumonia (due to, identified influenza virus NEC, with, pneumonia, specified type NEC), J10.1 — Influenza due to other identified influenza virus with other respiratory manifestations (novelH1N1 influenza), J10.2 — Influenza due to other identified influenza virus with gastrointestinal manifestations (due to, identified influenza virus NEC, with, enteritis), J10.81 — Influenza due to other identified influenza virus with encephalopathy (due to, identified influenza virus NEC, with, encephalopathy), J10.82 — Influenza due to other identified influenza virus with myocarditis (due to, identified influenza virus NEC, with, myocarditis), J10.83 — Influenza due to other identified influenza virus with otitis media (due to, identified influenza virus NEC, with, otitis media), J10.89 — Influenza due to other identified influenza virus with other manifestations (due to, identified influenza virus NEC, with, specified manifestation NEC), +11 more

Contextual Map

Every relationship of J09.X2 in one view: hierarchy, official tabular instructions in both directions, clinical classification, risk adjustment, MS-DRG participation, index terms and change history — each edge carrying the CMS source it derives from.

Run J09.X2 with these 9 related codes in Claim Check

Hierarchy

Use Additional Code

Referenced by Excludes1 notes

Referenced by Code First instructions

Referenced by Code Also instructions

Clinical classification (CCSR)

MS-DRG Grouper

MDC crossing

  • MDC 04 — Diseases and Disorders of the Respiratory System[MDC crossing]: “Diseases and Disorders of the Respiratory System — the grouper's crossing between diagnoses and procedures: a principal diagnosis sets the MDC, and same-MDC procedures move the stay to its surgical DRGs. 3,998 same-MDC procedures group here; browse them on the MDC page.”— CMS MS-DRG Definitions Manual · FY2026
  • MDC 15 — Newborns and Other Neonates with Conditions Originating in Perinatal Period[MDC crossing]: “Newborns and Other Neonates with Conditions Originating in Perinatal Period — the grouper's crossing between diagnoses and procedures: a principal diagnosis sets the MDC, and same-MDC procedures move the stay to its surgical DRGs.”— CMS MS-DRG Definitions Manual · FY2026

Index entries (15)

  • Flu, avian[Index term]— CMS ICD-10-CM Index to Diseases and Injuries · icd10cm-fy2026
  • Flu, bird[Index term]— CMS ICD-10-CM Index to Diseases and Injuries · icd10cm-fy2026
  • Flu, swine (viruses that normally cause infections in pigs)[Index term]— CMS ICD-10-CM Index to Diseases and Injuries · icd10cm-fy2026
  • Influenza (bronchial) (epidemic) (respiratory (upper)) (unidentified influenza virus), A/H5N1[Index term]— CMS ICD-10-CM Index to Diseases and Injuries · icd10cm-fy2026
  • Influenza (bronchial) (epidemic) (respiratory (upper)) (unidentified influenza virus), avian[Index term]— CMS ICD-10-CM Index to Diseases and Injuries · icd10cm-fy2026
  • Influenza (bronchial) (epidemic) (respiratory (upper)) (unidentified influenza virus), bird[Index term]— CMS ICD-10-CM Index to Diseases and Injuries · icd10cm-fy2026
  • Influenza (bronchial) (epidemic) (respiratory (upper)) (unidentified influenza virus), due to, avian[Index term]— CMS ICD-10-CM Index to Diseases and Injuries · icd10cm-fy2026
  • Influenza (bronchial) (epidemic) (respiratory (upper)) (unidentified influenza virus), due to, identified novel influenza A virus[Index term]— CMS ICD-10-CM Index to Diseases and Injuries · icd10cm-fy2026
  • and 7 more

Nearest codes

Change history

  • FY2016 — In the code set at ICD-10-CM adoption [Change history]— CMS release files (code change ledger) · icd10cm-fy2016

Sources for this page

Codes, titles, notes, index terms and mappings on this page are transcribed from the datasets below. Relationships MedCoder computed and text MedCoder wrote are labelled where they appear.

Code, title, tabular notes and index terms Official source data
CMS/CDC ICD-10-CM FY2026 tabular list, index and tables, effective October 1, 2025 Release, file and checksum · Publisher’s page
Coding guidelines Official source data
ICD-10-CM Official Guidelines for Coding and Reporting (FY2026), quoted by section Release, file and checksum · Publisher’s page
Claim edits Official source data
CMS Definitions of Medicare Code Edits — v43.1 (April 2026) Release, file and checksum · Publisher’s page
Inpatient payment groups Official source data
CMS MS-DRG Definitions Manual (incl. Appendix B diagnosis index, Appendix C CC/MCC list, Appendix E procedure index) and IPPS Final Rule tables — v43 Release, file and checksum · Publisher’s page
Change history and date-of-service validity Official source data
CMS ICD-10-CM release addenda, ingested release by release into the change ledger Release, file and checksum · Publisher’s page
Comparisons, relationships and the contextual map MedCoder structured relationship
Computed by MedCoder from the tabular notes and tables above; every derived relationship is marked as derived where it appears
Summary and FAQ answers MedCoder explanation
Written by MedCoder to explain the sources above: drafted with AI assistance, checked by a person against the release files, and labelled as MedCoder text where it appears. Not official text.

Labels on this page: Official source data · MedCoder structured relationship · MedCoder explanation. How to read the labels · All data sources and release dates

Cite this page

Reference this page in a research guide, syllabus or article. The release is included because code content changes each year.

MedCoder.ai. "J09.X2 — Influenza due to identified novel influenza A virus with other respiratory manifestations." ICD-10-CM FY2026. https://medcoder.ai/icd10/code/j09.x2-influenza-due-to-identified-novel-influenza-a-virus-with-other-respiratory-manifestations

Change history

  • FY2016 — October 1, 2015
    In the code set at ICD-10-CM adoption
    Influenza due to identified novel influenza A virus with other respiratory manifestations

No changes since FY2016 — additions, deletions, description changes and billable-status changes are tracked through FY2027 (effective October 1, 2026), and none are recorded for this code. Note changes are tracked from FY2027 only.

Nearest Codes in This Family

Official ICD-10-CM classifications closest to J09.X2 in its code family, with their registry titles.

View all codes in the J09 family