2026 ICD-10-CM Diagnosis Code J93.83Other pneumothorax

ICD-10-CM Codes›J00–J99›J90-J94›J93

ICD-10-CM J93.83
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

J93.83 is a billable ICD-10-CM diagnosis code for other pneumothorax. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026) and groups to MS-DRG 199 through 201. Coders also document this condition as acute pneumothorax. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Pneumothorax.

Code Identity

ICD-10-CM Code
J93.83
Billable Status
Yes — Valid for Submission
Code Describes
Other pneumothorax
Short Description
Other pneumothorax
Same as the full description in the CMS dataset.
Parent Code
J93.8
Other pneumothorax and air leak

Code Classification

ChapterJ00–J99Diseases of the respiratory system
SectionJ90-J94Other diseases of the pleura
CategoryJ93Pneumothorax and air leak
This CodeJ93.83Other pneumothorax

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Acute pneumothorax
  • Catamenial pneumothorax
  • Open pneumothorax
  • Pneumothorax ex vacuo
  • Spontaneous pneumothorax

Tabular List NotesGuidance

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

Inclusion Terms

  • Acute pneumothorax
  • Spontaneous pneumothorax NOS

Index to Diseases and InjuriesGuidance

Alphabetical index entries that point to this code.

External Cause of Injuries IndexGuidance

References for this code in the External Cause of Injuries Index.

    • Pneumothorax NOS
      • acute
    • Pneumothorax NOS
      • specified NEC
    • Pneumothorax NOS
      • spontaneous NOS

Clinical ClassificationClinical

AHRQ’s CCSR groups this code into broader clinical categories.

CCSR RSP014
Pneumothorax
Default principal diagnosis: inpatient Yes · outpatient Yes

Clinical InformationClinical

  • Pneumothorax

    an accumulation of air or gas in the pleural cavity, which may occur spontaneously or as a result of trauma or a pathological process. the gas may also be introduced deliberately during pneumothorax, artificial.

  • Pneumothorax, Artificial

    injection of air or a more slowly absorbed gas such as nitrogen, into the pleural cavity to collapse the lung.

  • Pleural Cavity

    paired but separate cavity within the thoracic cavity. it consists of the space between the parietal and visceral pleura and normally contains a capillary layer of serous fluid that lubricates the pleural surfaces.

  • Grade 1 Neonatal Pneumothorax, AE|Grade 1 Neonatal Pneumothorax|Grade 1 Neonatal Pneumothorax, Adverse Event

    an adverse event in a newborn characterized by radiological evidence of pneumothorax; no clinical signs; no care change required.

  • Grade 1 Pneumothorax, CTCAE|Grade 1 Pneumothorax|Grade 1 Pneumothorax

    asymptomatic; clinical or diagnostic observations only; intervention not indicated

  • Grade 2 Neonatal Pneumothorax, AE|Grade 2 Neonatal Pneumothorax|Grade 2 Neonatal Pneumothorax, Adverse Event

    an adverse event in a newborn characterized by radiological evidence of pneumothorax; minor clinical signs; minor care change required (e.g. oxygen, increased monitoring).

  • Grade 2 Pneumothorax, CTCAE|Grade 2 Pneumothorax|Grade 2 Pneumothorax

    symptomatic; intervention indicated

  • Grade 3 Neonatal Pneumothorax, AE|Grade 3 Neonatal Pneumothorax|Grade 3 Neonatal Pneumothorax, Adverse Event

    an adverse event in a newborn characterized by radiological evidence of pneumothorax; with clinical signs; major care change required (e.g. chest drainage).

  • Grade 3 Pneumothorax, CTCAE|Grade 3 Pneumothorax|Grade 3 Pneumothorax

    sclerosis and/or operative intervention indicated; hospitalization indicated

  • Grade 4 Neonatal Pneumothorax, AE|Grade 4 Neonatal Pneumothorax|Grade 4 Neonatal Pneumothorax, Adverse Event

    a pneumothorax adverse event in a newborn characterized by life-threatening respiratory and/or hemodynamic compromise (e.g. tension pneumothorax); urgent major care change required.

  • Grade 4 Pneumothorax, CTCAE|Grade 4 Pneumothorax|Grade 4 Pneumothorax

    life-threatening consequences; urgent intervention indicated

  • Grade 5 Neonatal Pneumothorax, AE|Grade 5 Neonatal Pneumothorax|Grade 5 Neonatal Pneumothorax, Adverse Event

    a pneumothorax adverse event in a newborn which results in death.

  • Grade 5 Pneumothorax, CTCAE|Grade 5 Pneumothorax|Grade 5 Pneumothorax

    death

  • Neonatal Pneumothorax, AE|Neonatal Pneumothorax|Neonatal Pneumothorax, Adverse Event|Neonatal pneumothorax

    an adverse event in a newborn characterized by a collection of air or other gas between the visceral and parietal pleura.

  • Pneumothorax

    abnormal presence of air in the pleural cavity.

  • Pneumothorax, CTCAE|Pneumothorax|Pneumothorax|Pneumothorax

    a disorder characterized by abnormal presence of air in the pleural cavity resulting in the collapse of the lung.

Patient EducationClinical

Pleural Disorders

Your pleura is a large, thin sheet of tissue that wraps around the outside of your lungs and lines the inside of your chest cavity. Between the layers of the pleura is a very thin space. Normally it's filled with a small amount of fluid.

Read the full article at MedlinePlus

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

Convert J93.83 to ICD-9-CMHistory

The closest ICD-9-CM equivalents under the General Equivalence Mappings.

ICD-9-CM
512.89 Other pneumothorax
Approximate The match is approximate rather than exact.

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 J93.83Overview

Is J93.83 (Other pneumothorax and air leak) a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report other pneumothorax on HIPAA-covered claims from October 1, 2025 through September 30, 2026.

What MS-DRG does J93.83 group to?

When other pneumothorax is the principal diagnosis on an inpatient stay, it groups to MS-DRG 199, 200, 201, with relative weights from 0.7151 to 1.7641 depending on complications. Higher weights mean higher Medicare reimbursement.

What is the ICD-9 equivalent of J93.83?

Under the General Equivalence Mappings, other pneumothorax converts to ICD-9-CM 512.89 (other pneumothorax). The mapping is approximate, so confirm the match fits the documentation.

Footnotes

[1] Not chronic - A diagnosis code that does not fit the criteria for chronic condition (duration, ongoing medical treatment, and limitations) is considered not chronic. Some codes designated as not chronic are acute conditions. Other diagnosis codes that indicate a possible chronic condition, but for which the duration of the illness is not specified in the code description (i.e., we do not know the condition has lasted 12 months or longer) also are considered not chronic.