DxCodebookFY2027 · Oct 1, 2026 – Sep 30, 2027

Category · FY2027

J12 Viral pneumonia, not elsewhere classified

  • Header · not billable

J12 is not billable. The category heads 8 billable codes in FY2027, grouped under 6 subdivisions.

ICD-10 code by name

What is the ICD-10 code for viral pneumonia, unspecified?
Viral pneumonia ICD-10 code: J12.9 Viral pneumonia, unspecified. Search ICD-10 for viral pneumonia

Where it sits

  1. Chapter 10 Diseases of the respiratory system (J00-J99)
  2. J09-J18 Influenza and pneumonia (J09-J18)
  3. J12 Viral pneumonia, not elsewhere classified
Billable codes
8
Subdivisions
6
CC / MCC codes
0 / 8
HCC V28 codes
0
New FY2027
0
Index entries
29

Codes in J12

  1. J12.0
    Adenoviral pneumonia
    BillableMCC
  2. J12.1
    Respiratory syncytial virus pneumonia
    BillableMCC
    Inclusion terms 1

    Inclusion terms

    • RSV pneumonia
  3. J12.2
    Parainfluenza virus pneumonia
    BillableMCC
  4. J12.3
    Human metapneumovirus pneumonia
    BillableMCC
  5. J12.8
    Other viral pneumonia
    Header
  6. J12.81
    Pneumonia due to SARS-associated coronavirus
    BillableMCC
    Inclusion terms 1

    Inclusion terms

    • Severe acute respiratory syndrome NOS
  7. J12.82
    Pneumonia due to coronavirus disease 2019
    BillableMCC
    Inclusion terms 2, Code first 1

    Inclusion terms

    • Pneumonia due to 2019 novel coronavirus (SARS-CoV-2)
    • Pneumonia due to COVID-19

    Code first

  8. J12.89
    Other viral pneumonia
    BillableMCC
  9. J12.9
    Viral pneumonia, unspecified
    BillableMCC

CC/MCC: as a secondary diagnosis, unless the principal diagnosis is on the code’s PDX exclusion list (MS-DRG v44 Appendix C; list on the code card).

Sources of each column.

Instructions

At J12

Includes

  • bronchopneumonia due to viruses other than influenza viruses

Excludes2

  • aspiration pneumonia due to anesthesia during labor and delivery (O74.0) O74.0
  • aspiration pneumonia due to anesthesia during pregnancy (O29) O29
  • aspiration pneumonia due to anesthesia during puerperium (O89.0) O89.0
  • aspiration pneumonia due to solids and liquids (J69.-) J69
  • aspiration pneumonia NOS (J69.0) J69.0
  • congenital pneumonia (P23.0) P23.0
  • congenital rubella pneumonitis (P35.0) P35.0
  • interstitial pneumonia NOS (J84.9) J84.9
  • lipid pneumonia (J69.1) J69.1
  • neonatal aspiration pneumonia (P24.-) P24

Code first

Code also

  • associated abscess, if applicable (J85.1) J85.1

Notes that also apply

Block J09-J18 instructions (Excludes2 9, Use additional code 1): printed on the block page.

Chapter 10 instructions (Notes 1, Excludes2 9, Use additional code 7): printed on the chapter 10 page.

Index entries

  • Pneumonia (acute) (double) (migratory) (purulent) (septic) (unresolved)adenoviral → J12.0
  • Pneumonia (acute) (double) (migratory) (purulent) (septic) (unresolved)respiratory syncytial virus (RSV) → J12.1
  • Pneumonia (acute) (double) (migratory) (purulent) (septic) (unresolved)parainfluenza virus → J12.2
  • Pneumonia (acute) (double) (migratory) (purulent) (septic) (unresolved)human metapneumovirus → J12.3
  • Pneumonia (acute) (double) (migratory) (purulent) (septic) (unresolved)SARS-associated coronavirus → J12.81
  • Syndromesevere acute respiratory (SARS) → J12.81
  • COVID-19pneumonia → J12.82
  • Pneumonia (acute) (double) (migratory) (purulent) (septic) (unresolved)2019 (novel) coronavirus → J12.82
  • Pneumonia (acute) (double) (migratory) (purulent) (septic) (unresolved)coronavirus (novel) (disease) 2019 → J12.82
  • Pneumonia (acute) (double) (migratory) (purulent) (septic) (unresolved)COVID-19 → J12.82
  • Pneumonia (acute) (double) (migratory) (purulent) (septic) (unresolved)SARS-CoV-2 → J12.82
  • Pneumonia (acute) (double) (migratory) (purulent) (septic) (unresolved)viral, virus (broncho) (interstitial) (lobar) → J12.9
  • Pneumonia (acute) (double) (migratory) (purulent) (septic) (unresolved)in (due to)adenovirus → J12.0
  • Pneumonia (acute) (double) (migratory) (purulent) (septic) (unresolved)viral, virus (broncho) (interstitial) (lobar)adenoviral → J12.0
  • Pneumonia (acute) (double) (migratory) (purulent) (septic) (unresolved)in (due to)respiratory syncytial virus (RSV) → J12.1
  • Pneumonia (acute) (double) (migratory) (purulent) (septic) (unresolved)viral, virus (broncho) (interstitial) (lobar)respiratory syncytial (RSV) → J12.1
  • Virus, viralrespiratory syncytial (RSV)bronchopneumonia → J12.1
  • Virus, viralrespiratory syncytial (RSV)pneumonia → J12.1
  • Pneumonia (acute) (double) (migratory) (purulent) (septic) (unresolved)in (due to)parainfluenza virus → J12.2
  • Pneumonia (acute) (double) (migratory) (purulent) (septic) (unresolved)viral, virus (broncho) (interstitial) (lobar)parainfluenza → J12.2
  • Pneumonia (acute) (double) (migratory) (purulent) (septic) (unresolved)in (due to)human metapneumovirus → J12.3
  • Pneumonia (acute) (double) (migratory) (purulent) (septic) (unresolved)viral, virus (broncho) (interstitial) (lobar)human metapneumovirus → J12.3
  • Pneumonia (acute) (double) (migratory) (purulent) (septic) (unresolved)viral, virus (broncho) (interstitial) (lobar)SARS-associated coronavirus → J12.81
  • Pneumonia (acute) (double) (migratory) (purulent) (septic) (unresolved)specified NECvirus NEC → J12.89
  • Pneumonia (acute) (double) (migratory) (purulent) (septic) (unresolved)viral, virus (broncho) (interstitial) (lobar)specified NEC → J12.89
  • Infection, infected, infective (opportunistic)virus, viral NOSrespiratory syncytial (RSV)bronchopneumonia → J12.1
  • Infection, infected, infective (opportunistic)virus, viral NOSrespiratory syncytial (RSV)pneumonia → J12.1
  • Syndromesevere acute respiratory (SARS)coronavirus 2pneumonia → J12.82
  • Pneumonia (acute) (double) (migratory) (purulent) (septic) (unresolved)aspirationdue toaspiration of microorganismsviral → J12.9

NCHS Alphabetic Index. Index first, then the Tabular List.

Hierarchy