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ICD-10-CM 2027 diagnosis code

J15.6Pneumonia due to other Gram-negative bacteria

Not billable — use a more specific code

J15.6 is a header code, so it can't be reported by itself. Choose one of the 2 more specific codes beneath it.

Code last changed in FY2024 (effective October 1, 2023). Source: official FY2027 ICD-10-CM release from CDC/NCHS and CMS. Page updated September 29, 2026. About our data

About J15.6

J15.6 is the ICD-10-CM diagnosis code for pneumonia due to other Gram-negative bacteria. It belongs to category J15 (bacterial pneumonia, not elsewhere classified), block J09-J18 (influenza and pneumonia) and chapter 10 (diseases of the respiratory system). It is a header code, so it can't be reported by itself; one of its 2 subcodes must be used instead.

Within J15, choose J15.6 (Pneumonia due to other Gram-negative bacteria) only when documentation doesn't support a more specific option: pneumonia due to Klebsiella pneumoniae (J15.0), pneumonia due to Pseudomonas (J15.1), pneumonia due to staphylococcus (J15.2), pneumonia due to streptococcus, group B (J15.3), pneumonia due to other streptococci (J15.4), pneumonia due to Escherichia coli (J15.5), pneumonia due to Mycoplasma pneumoniae (J15.7), pneumonia due to other specified bacteria (J15.8) and 1 more.

To report this condition, pick the subcode that matches the documentation: J15.61 (baumannii) and J15.69 (bacteria).

Code first: , if applicable, associated influenza (J09.X1, J10.0-, J11.0-).

It has been part of ICD-10-CM since the code set took effect on October 1, 2015, and changed in FY2018 (title revised) and FY2024 (expanded into subcodes).

Before ICD-10, this condition was coded in ICD-9-CM as 482.83 (pneumonia due to other gram-negative bacteria).

Specific codes under J15.6

Notes that apply from higher levels

Instructions written at a parent level also apply to J15.6.

› From J15 Bacterial pneumonia, not elsewhere classified
Includes
  • bronchopneumonia due to bacteria other than S. pneumoniae and H. influenzae
Excludes1
  • chlamydial pneumonia (J16.0)
  • congenital pneumonia (P23.-)
  • Legionnaires' disease (A48.1)
  • spirochetal pneumonia (A69.8)
Code first
Code also
  • , if applicable, any associated condition such as:
  • abscess (J85.1)
  • aspiration pneumonia (J69.-)

Broader instructions also apply from J09-J18 Influenza and pneumonia and Chapter 10: Diseases of the respiratory system.

ICD-9-CM equivalent

Converter →
  • 482.83Pneumonia due to other gram-negative bacteriaexact

From the CMS 2018 General Equivalence Mappings (GEMs), the final GEMs release.

Code history

  1. 2016
  2. 2017
  3. 2018
  4. 2019
  5. 2020
  6. 2021
  7. 2022
  8. 2023
  9. 2024
  10. 2025
  11. 2026
  12. 2027
  • FY2016 (effective 10/1/2015): Added (first year of ICD-10-CM)
  • FY2018 (effective 10/1/2017): Title revised — was “Pneumonia due to other aerobic Gram-negative bacteria”
  • FY2024 (effective 10/1/2023): Expanded — no longer billable

Common questions about J15.6

Is J15.6 billable?

No. J15.6 is a header code. Report one of its more specific subcodes instead.

What is the ICD-9 code for J15.6?

The CMS General Equivalence Mappings map J15.6 to ICD-9-CM 482.83.