MCMedicalCodingSoftware
J15.9

J15.9: Unspecified bacterial pneumonia

Billable / specific codeICD-10-CM

J15.9 is a billable, specific ICD-10-CM code for unspecified bacterial pneumonia. It is valid for submission on a claim.

Check J15.9 with the rest of the claim: free scrubber

Inclusion terms

Alternative wordings a physician may use in the chart for this same code.

  • Pneumonia due to gram-positive bacteria

Excludes1 inherited from the categories above J15.9

A category’s note binds every code beneath it.

Written on J15: Bacterial pneumonia, not elsewhere classified

  • chlamydial pneumonia (J16.0)
  • congenital pneumonia (P23.-)
  • Legionnaires' disease (A48.1)
  • spirochetal pneumonia (A69.8)

Risk adjustment

No CMS-HCC V28 category: this code does not change a RAF score.

Medicare coverage

J15.9 is named in 7 Medicare coverage policies: 7 listing it as supporting medical necessity. Which one applies depends on your Medicare contractor.

  • A52466Nebulizers - Policy Article
  • A56580Billing and Coding: Computerized Axial Tomography (CT), Thorax
  • A56730Billing and Coding: Respiratory Therapy and Oximetry Services
  • A58710Billing and Coding: MolDX: Molecular Syndromic Panels for Infectious Disease Pathogen Identification Testing

Alphabetic index entries that lead here

  • Pneumonia›bacillus
  • Pneumonia›bacterial
  • Pneumonia›broncho-, bronchial›bacterial
  • Pneumonia›lobar›bacterial
  • Pneumonia›aspiration›due to›aspiration of microorganisms›bacterial

The condition this code belongs to

Code history

Unchanged in every release from FY2024 to FY2027.

Other codes under J15

ICD-10-CMFY2027· effective October 1, 2026

Loaded directly from the CMS/NCHS ICD-10-CM public-domain release: see data sources and our editorial policy. If this page disagrees with the CMS tabular list, this page is wrong. Reference information for professional coders; not medical or billing advice.