ICD-10-CM Tabular Index · Chapter 10 · FY 2027 J15

Bacterial pneumonia, not elsewhere classified (J15) ICD-10-CM

The J15 code range covers bacterial pneumonia, not elsewhere classified with 18 ICD-10-CM diagnosis codes. 14 of them are billable and valid for claim submission in fiscal year 2027, and the category headers group them but cannot themselves be billed.

✓ Built from the official CMS FY 2027 datasetEffective Oct 1, 2026 – Sep 30, 2027
18
Diagnosis Codes
14
Billable Codes
J15
Code Range
J09–J18
Parent Section

Includes

This note appears immediately under a three character code title to further define, or give examples of, the content of the category.

Code First

Certain conditions have both an underlying etiology and multiple body system manifestations due to the underlying etiology. For such conditions, the ICD-10-CM has a coding convention that requires the underlying condition be sequenced first followed by the manifestation. Wherever such a combination exists, there is a "use additional code" note at the etiology code, and a "code first" note at the manifestation code. These instructional notes indicate the proper sequencing order of the codes, etiology followed by manifestation.

Code Also

A "code also" note instructs that two codes may be required to fully describe a condition, but this note does not provide sequencing direction.

Type 1 Excludes

A type 1 excludes note is a pure excludes note. It means "NOT CODED HERE!" An Excludes1 note indicates that the code excluded should never be used at the same time as the code above the Excludes1 note. An Excludes1 is used when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.

ICD-10-CM

Codes in the J15 Range 18 codes · 14 billable

18 of 18 shown
  • J15 Bacterial pneumonia, not elsewhere classifiedNon-billable
  • J15.0 Pneumonia due to Klebsiella pneumoniae
  • J15.1 Pneumonia due to Pseudomonas
  • J15.2 Pneumonia due to staphylococcusNon-billable
  • J15.20 Pneumonia due to staphylococcus, unspecified
  • J15.21 Pneumonia due to staphylococcus aureusNon-billable
  • J15.211 Pneumonia due to Methicillin susceptible Staphylococcus aureus
  • J15.212 Pneumonia due to Methicillin resistant Staphylococcus aureus
  • J15.29 Pneumonia due to other staphylococcus
  • J15.3 Pneumonia due to streptococcus, group B
  • J15.4 Pneumonia due to other streptococci
  • J15.5 Pneumonia due to Escherichia coli
  • J15.6 Pneumonia due to other Gram-negative bacteriaNon-billable
  • J15.61 Pneumonia due to Acinetobacter baumannii
  • J15.69 Pneumonia due to other Gram-negative bacteria
  • J15.7 Pneumonia due to Mycoplasma pneumoniae
  • J15.8 Pneumonia due to other specified bacteria
  • J15.9 Unspecified bacterial pneumonia

Clinical Terms in This Code Range

Definitions from the National Library of Medicine for conditions coded in the J15 range.

Pneumonia, Bacterial

Inflammation of the lung parenchyma that is caused by bacterial infections.

About the J15 Code Range

Bacterial pneumonia is inflammation of lung tissue caused by a bacterial infection. J15 groups these pneumonias by the bacteria named as their cause.

Some subdivisions name a specific bacterium, such as Klebsiella pneumoniae or Escherichia coli. The staphylococcus branch, J15.2, distinguishes unspecified, Staphylococcus aureus, and other staphylococci. Its more detailed codes distinguish methicillin-susceptible from methicillin-resistant Staphylococcus aureus. The Gram-negative bacteria branch, J15.6, identifies Acinetobacter baumannii separately from other Gram-negative bacteria. Other specified bacteria and unspecified bacterial pneumonia have separate codes.

Questions About This Page

How many billable codes are in the J15 range?

Of the 18 codes in this range, 14 are billable and valid for claim submission from October 1, 2026 through September 30, 2027. Category header codes group them but cannot be reported on claims.

What does the J15 range classify?

The range classifies bacterial pneumonia, not elsewhere classified. Each code links to its own reference page with billing status, MS-DRG grouping, coding notes, and clinical information.

Related References

Source: CMS FY 2027 ICD-10-CM Tabular List and order file, effective October 1, 2026 through September 30, 2027.