2026 ICD-10-CM Diagnosis Code J86Pyothorax

ICD-10-CM CodesJ00–J99J85-J86J86

ICD-10-CM J86
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

J86 is a non-billable ICD-10-CM category code for pyothorax, so it cannot be submitted on claims. Use a more specific code from this category instead, such as J86.0 and J86.9.

Code Identity

ICD-10-CM Code
J86
Billable Status
No — Non-Billable Category
Code Describes
Pyothorax
Chapter
J85-J86
Suppurative and necrotic conditions of the lower respiratory tract

Code Classification

ChapterJ00–J99Diseases of the respiratory system
SectionJ85-J86Suppurative and necrotic conditions of the lower respiratory tract
CategoryJ86Pyothorax
This CodeJ86Pyothorax

Specific Coding for PyothoraxOverview

Non-specific codes like J86 require more characters. Use one of these billable codes instead:

  • Use J86.0 for Pyothorax with fistula

  • Use J86.9 for Pyothorax without fistula

Tabular List NotesGuidance

Coding notes and annotation back-references applicable to this code.

Use Additional Code

Type 1 Excludes

  • abscess of lung J85
  • pyothorax due to tuberculosis A15.6

Patient EducationClinical

Abscess

An abscess is a pocket of pus. You can get an abscess almost anywhere in your body. When an area of your body becomes infected, your body's immune system tries to fight the infection. White blood cells go to the infected area, collect within the damaged tissue, and cause inflammation. During this process, pus forms.

Read the full article at MedlinePlus

Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.

Code HistoryHistory

FY 2016AddedAdded to the ICD-10-CM code setEffective October 1, 2015, the first year of ICD-10-CM.
FY 2017–2025No changes
FY 2026CurrentCurrent code set, no changesEffective October 1, 2025 through September 30, 2026.

Questions About J86Overview

Is J86 (Pyothorax) a billable code?

No. This is a category header that groups the codes for pyothorax, and headers cannot be submitted on claims. Claims for pyothorax need a more specific code from this category, such as J86.0 and J86.9.