2026 ICD-10-CM Diagnosis Code J05.11Acute epiglottitis with obstruction

ICD-10-CM Codes›J00–J99›J00-J06›J05

ICD-10-CM J05.11
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

J05.11 is a billable ICD-10-CM diagnosis code for acute epiglottitis with obstruction. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026) and groups to MS-DRG 11 through 13, 152 through 153. As a secondary diagnosis, it counts as a major complication or comorbidity (MCC) and places an inpatient stay in the highest severity level of its MS-DRG family. It does not count, however, when the principal diagnosis is one of 19 closely related codes. Coders also document this condition as acute epiglottitis. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Other specified upper respiratory infections.

Code Identity

ICD-10-CM Code
J05.11
Billable Status
Yes — Valid for Submission
Code Describes
Acute epiglottitis with obstruction
Short Description
Acute epiglottitis with obstruction
Same as the full description in the CMS dataset.
Parent Code
J05.1
Acute epiglottitis

Code Classification

ChapterJ00–J99Diseases of the respiratory system
SectionJ00-J06Acute upper respiratory infections
CategoryJ05Acute obstructive laryngitis [croup] and epiglottitis
This CodeJ05.11Acute epiglottitis with obstruction

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Acute epiglottitis
  • Acute epiglottitis with obstruction
  • Acute laryngitis with obstruction

Index to Diseases and InjuriesGuidance

Alphabetical index entries that point to this code.

Clinical ClassificationClinical

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

CCSR RSP006
Other specified upper respiratory infections
Default principal diagnosis: inpatient Yes · outpatient Yes

Patient EducationClinical

Throat Disorders

Your throat is a tube that carries food to your esophagus and air to your windpipe and larynx. The technical name for your throat is the pharynx.

Read the full article at MedlinePlus

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

Convert J05.11 to ICD-9-CMHistory

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

ICD-9-CM
464.31 Ac epiglottitis w obstr
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 J05.11Overview

What is the ICD-10 code for acute epiglottitis with obstruction?

The ICD-10-CM code for acute epiglottitis with obstruction is J05.11 (sometimes written as J0511). It is billable on HIPAA-covered claims from October 1, 2025 through September 30, 2026.

Is J05.11 (Acute epiglottitis) a billable code?

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

What MS-DRG does J05.11 group to?

When acute epiglottitis with obstruction is the principal diagnosis on an inpatient stay, it groups to MS-DRG 11, 12, 13, 152, 153, with relative weights from 0.7382 to 5.4541 depending on complications. Higher weights mean higher Medicare reimbursement.

Is J05.11 a CC or MCC?

CMS lists J05.11 as an MCC (major complication or comorbidity) for FY 2026. Reported as a secondary diagnosis, it places the inpatient stay in the highest-weighted DRG of its severity family. It does not count when the principal diagnosis is one of the 19 closely related codes in its exclusion list.

What is the ICD-9 equivalent of J05.11?

Under the General Equivalence Mappings, acute epiglottitis with obstruction converts to ICD-9-CM 464.31 (ac epiglottitis w obstr). The mapping is a direct match.