2026 ICD-10-CM Diagnosis Code J34.2Deviated nasal septum

ICD-10-CM Codes›J00–J99›J30-J39›J34

ICD-10-CM J34.2
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

J34.2 is a billable ICD-10-CM diagnosis code for deviated nasal septum. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026) and groups to MS-DRG 154 through 156. Coders also document this condition as acquired deviated nasal septum. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Other specified and unspecified upper respiratory disease.

Code Identity

ICD-10-CM Code
J34.2
Billable Status
Yes — Valid for Submission
Code Describes
Deviated nasal septum
Short Description
Deviated nasal septum
Same as the full description in the CMS dataset.
Parent Code
J34
Other and unspecified disorders of nose and nasal sinuses

Code Classification

ChapterJ00–J99Diseases of the respiratory system
SectionJ30-J39Other diseases of upper respiratory tract
CategoryJ34Other and unspecified disorders of nose and nasal sinuses
This CodeJ34.2Deviated nasal septum

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Acquired deviated nasal septum
  • Deviated nasal septum
  • Nasal deviation
  • Nasal deviation, bone
  • Nasal deviation, cartilage

Tabular List NotesGuidance

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

Inclusion Terms

  • Deflection or deviation of septum (nasal) (acquired)

Type 1 Excludes

  • congenital deviated nasal septum Q67.4

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.

    • Crooked septum, nasal
    • Deflection
      • septum (acquired) (nasal) (nose)
    • Deflection
      • turbinate (nose)
    • Deformity
      • nose (acquired) (cartilage)
        • septum (acquired)
    • Deformity
      • septum, nasal (acquired)
    • Deviation(in)
      • nasal septum
    • Deviation(in)
      • septum (nasal) (acquired)
    • Dislocation(articular)
      • septum (nasal) (old)
    • Irregular, irregularity
      • septum (nasal)

Clinical ClassificationClinical

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

CCSR RSP007
Other specified and unspecified upper respiratory disease
Default principal diagnosis: inpatient Yes · outpatient Yes

Patient EducationClinical

Nose Injuries and Disorders

Your nose is important to your health. It filters the air you breathe, removing dust, germs, and irritants. It warms and moistens the air to keep your lungs and tubes that lead to them from drying out. Your nose also contains the nerve cells that help your sense of smell.

Read the full article at MedlinePlus

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

Convert J34.2 to ICD-9-CMHistory

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

ICD-9-CM
470 Deviated nasal septum
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 J34.2Overview

Is J34.2 (Other and unspecified disorders of nose and nasal sinuses) a billable code?

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

What MS-DRG does J34.2 group to?

When deviated nasal septum is the principal diagnosis on an inpatient stay, it groups to MS-DRG 154, 155, 156, with relative weights from 0.6911 to 1.5635 depending on complications. Higher weights mean higher Medicare reimbursement.

What is the ICD-9 equivalent of J34.2?

Under the General Equivalence Mappings, deviated nasal septum converts to ICD-9-CM 470 (deviated nasal septum). 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.