2026 ICD-10-CM Diagnosis Code J98.9Respiratory disorder, unspecified

ICD-10-CM Codes›J00–J99›J96-J99›J98

ICD-10-CM J98.9
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

J98.9 is a billable ICD-10-CM diagnosis code for respiratory disorder, unspecified. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026) and groups to MS-DRG 205 through 206. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Other specified and unspecified lower respiratory disease.

Code Identity

ICD-10-CM Code
J98.9
Billable Status
Yes — Valid for Submission
Code Describes
Respiratory disorder, unspecified
Short Description
Respiratory disorder, unspecified
Same as the full description in the CMS dataset.
Parent Code
J98
Other respiratory disorders

Code Classification

ChapterJ00–J99Diseases of the respiratory system
SectionJ96-J99Other diseases of the respiratory system
CategoryJ98Other respiratory disorders
This CodeJ98.9Respiratory disorder, unspecified

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Adenoviral respiratory disease
  • Airway morbidity
  • Alopecia, nail dystrophy, ophthalmic complications, thyroid dysfunction, hypohidrosis, ephelides, enteropathy and respiratory tract infections
  • Cardiac arrest due to respiratory disorder
  • Chronic disease of respiratory system
  • Disease of the respiratory system complicating pregnancy, childbirth and/or the puerperium
  • Disorder of lower respiratory system
  • Disorder of respiratory system
  • Disorder of respiratory system co-occurrent with human immunodeficiency virus infection
  • Erythrocytosis due to pulmonary disease
  • Erythrocytosis due to tissue hypoxemia
  • Fetal disorder due to chronic maternal respiratory disease
  • Fetal disorder due to maternal respiratory disease
  • Inhaler technique - good
  • Polycythemia due to cyanotic respiratory disease
  • Respiratory complication
  • Respiratory complications of care
  • Respiratory disease requiring assisted mechanical ventilation
  • Respiratory disease treatment started
  • Respiratory morbidity
  • Respiratory treatment changed
  • Spontaneous pneumothorax
  • Spontaneous pneumothorax due to respiratory disease
  • Tracheobronchial disorder

Tabular List NotesGuidance

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

Inclusion Terms

  • Respiratory disease (chronic) 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.

    • Arthritis, arthritic(acute) (chronic) (nonpyogenic) (subacute)
      • due to or associated with
        • respiratory disorder NOS
    • Arthritis, arthritic(acute) (chronic) (nonpyogenic) (subacute)
      • in (due to)
        • respiratory disorder NEC
    • Complication(s) (from) (of)
      • respiratory system
    • Disease, diseased
      • chest
    • Disease, diseased
      • respiratory (tract)
    • Disease, diseased
      • respiratory (tract)
        • chronic NOS

Clinical ClassificationClinical

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

CCSR RSP016
Other specified and unspecified lower respiratory disease
Default principal diagnosis: inpatient Yes · outpatient Yes

Convert J98.9 to ICD-9-CMHistory

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

ICD-9-CM
519.9 Resp system disease NOS
Exact Match The mapping is direct, with no qualifiers.

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 J98.9Overview

Is J98.9 (Other respiratory disorders) a billable code?

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

What MS-DRG does J98.9 group to?

When respiratory disorder, unspecified is the principal diagnosis on an inpatient stay, it groups to MS-DRG 205, 206, with relative weights from 0.9411 to 1.8310 depending on complications. Higher weights mean higher Medicare reimbursement.

What is the ICD-9 equivalent of J98.9?

Under the General Equivalence Mappings, respiratory disorder, unspecified converts to ICD-9-CM 519.9 (resp system disease NOS). The mapping is a direct match.

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.