2026 ICD-10-CM Diagnosis Code J05.0Acute obstructive laryngitis [croup]
ICD-10-CM Codes›J00–J99›J00-J06›J05
- Billable — Valid for Submission
- Not Chronic
J05.0 is a billable ICD-10-CM diagnosis code for acute obstructive laryngitis [croup]. 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. Coders also document this condition as acute laryngitis with obstruction. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Other specified upper respiratory infections.
Code Identity
Code Classification
Approximate SynonymsGuidance
Alternate terms and clinical phrases that map to this code.
- Acute laryngitis with obstruction
- Acute laryngotracheitis
- Acute laryngotracheitis with obstruction
- Acute tracheitis
- Allergic bronchitis
- Croup
- Laryngotracheobronchitis
- Recurrent allergic croup
- Recurrent croup
Tabular List NotesGuidance
Coding notes and annotation back-references applicable to this code.
Inclusion Terms
- Obstructive laryngitis (acute) NOS
- Obstructive laryngotracheitis NOS
These terms are the conditions for which that code is to be used. The terms may be synonyms of the code title, or, in the case of "other specified" codes, the terms are a list of the various conditions assigned to that code. The inclusion terms are not necessarily exhaustive. Additional terms found only in the Alphabetic Index may also be assigned to a code.
Index to Diseases and InjuriesGuidance
Alphabetical index entries that point to this code.
Angina (attack) (cardiac) (chest) (heart) (pectoris) (syndrome) (vasomotor) I20.9
croupous J05.0
membranous J05.0
trachealis J05.0
Laryngitis (acute) (edematous) (fibrinous) (infective) (infiltrative) (malignant) (membranous) (phlegmonous) (pneumococcal) (pseudomembranous) (septic) (subglottic) (suppurative) (ulcerative) J04.0
obstructive J05.0
spasmodic J05.0
stridulous J05.0
Clinical ClassificationClinical
AHRQ’s CCSR groups this code into broader clinical categories.
Patient EducationClinical
Croup
Croup is an inflammation of the vocal cords (larynx) and windpipe (trachea). It causes difficulty breathing, a barking cough, and a hoarse voice. The cause is usually a virus, often parainfluenza virus. Other causes include allergies and reflux.
Read the full article at MedlinePlus
Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.
Convert J05.0 to ICD-9-CMHistory
The closest ICD-9-CM equivalents under the General Equivalence Mappings.
Code HistoryHistory
Questions About J05.0Overview
What is the ICD-10 code for acute obstructive laryngitis [croup]?
The ICD-10-CM code for acute obstructive laryngitis [croup] is J05.0 (sometimes written as J050). It is billable on HIPAA-covered claims from October 1, 2025 through September 30, 2026.
Is J05.0 (Acute obstructive laryngitis [croup] and epiglottitis) a billable code?
Yes. This is a billable ICD-10-CM code, specific enough to report acute obstructive laryngitis [croup] on HIPAA-covered claims from October 1, 2025 through September 30, 2026.
What MS-DRG does J05.0 group to?
When acute obstructive laryngitis [croup] 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.
What is the ICD-9 equivalent of J05.0?
Under the General Equivalence Mappings, acute obstructive laryngitis [croup] converts to ICD-9-CM 464.01 (ac laryngitis w obstruct), 464.21 (ac laryngotrach w obstr), and 464.4 (croup). The mapping is approximate, so confirm the match fits the documentation.
