2026 ICD-10-CM Diagnosis Code J04.0Acute laryngitis
ICD-10-CM Codes›J00–J99›J00-J06›J04
- Billable — Valid for Submission
- Not Chronic
J04.0 is a billable ICD-10-CM diagnosis code for acute laryngitis. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026) and groups to MS-DRG 152 through 153. 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 catarrhal laryngitis
- Acute edematous laryngitis
- Acute laryngitis
- Acute laryngitis caused by Haemophilus influenzae
- Acute membranous laryngitis
- Acute phlegmonous laryngitis
- Acute pneumococcal laryngitis
- Acute simple laryngitis
- Acute subglottic laryngitis
- Acute suppurative laryngitis
- Acute ulcerative laryngitis
- Adenoviral bronchitis
- Adenoviral laryngotracheobronchitis
- Adenoviral respiratory disease
- Bleeding from larynx
- Edema of larynx
- Edematous laryngitis
- Haemophilus influenzae laryngitis
- Human papilloma virus infection of vocal cord
- Infective laryngitis
- Inflammation of larynx caused by virus
- Laryngitis
- Laryngitis due to gastroesophageal reflux
- Laryngotracheobronchitis
- Parainfluenza virus laryngitis
- Pneumococcal laryngitis
- Streptococcal laryngitis
- Suppurative laryngitis
- Traumatic hemorrhagic laryngitis
- Ulcer of larynx
- Ulcerative laryngitis
- Viral tracheitis
Tabular List NotesGuidance
Coding notes and annotation back-references applicable to this code.
Inclusion Terms
- Edematous laryngitis (acute)
- Laryngitis (acute) NOS
- Subglottic laryngitis (acute)
- Suppurative laryngitis (acute)
- Ulcerative laryngitis (acute)
Type 1 Excludes
- acute obstructive laryngitis J05.0
Type 2 Excludes
- chronic laryngitis J37.0
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.
A type 1 excludes note is a pure excludes note. It means "NOT CODED HERE!" An Excludes1 note indicates that the code excluded should never be used at the same time as the code above the Excludes1 note. An Excludes1 is used when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.
A type 2 excludes note represents "Not included here". An excludes2 note indicates that the condition excluded is not part of the condition represented by the code, but a patient may have both conditions at the same time. When an Excludes2 note appears under a code, it is acceptable to use both the code and the excluded code together, when appropriate.
Index to Diseases and InjuriesGuidance
Alphabetical index entries that point to this code.
- Gangrene, gangrenous (connective tissue) (dropsical) (dry) (moist) (skin) (ulcer) - See Also: Necrosis; - I96
- laryngitis - J04.0
- Glottitis - See Also: Laryngitis; - J04.0
- Hemophilus influenzae - J04.0
- H. influenzae - J04.0
- acute - J04.0
- streptococcal - J04.0
External Cause of Injuries IndexGuidance
References for this code in the External Cause of Injuries Index.
- Gangrene, gangrenous(connective tissue) (dropsical) (dry) (moist) (skin) (ulcer)
- laryngitis
- Glottitis
- Laryngitis(acute) (edematous) (fibrinous) (infective) (infiltrative) (malignant) (membranous) (phlegmonous) (pneumococcal) (pseudomembranous) (septic) (subglottic) (suppurative) (ulcerative)
- Laryngitis(acute) (edematous) (fibrinous) (infective) (infiltrative) (malignant) (membranous) (phlegmonous) (pneumococcal) (pseudomembranous) (septic) (subglottic) (suppurative) (ulcerative)
- Hemophilus influenzae
- Laryngitis(acute) (edematous) (fibrinous) (infective) (infiltrative) (malignant) (membranous) (phlegmonous) (pneumococcal) (pseudomembranous) (septic) (subglottic) (suppurative) (ulcerative)
- H. influenzae
- Laryngitis(acute) (edematous) (fibrinous) (infective) (infiltrative) (malignant) (membranous) (phlegmonous) (pneumococcal) (pseudomembranous) (septic) (subglottic) (suppurative) (ulcerative)
- spasmodic
- acute
- Laryngitis(acute) (edematous) (fibrinous) (infective) (infiltrative) (malignant) (membranous) (phlegmonous) (pneumococcal) (pseudomembranous) (septic) (subglottic) (suppurative) (ulcerative)
- streptococcal
Clinical ClassificationClinical
AHRQ’s CCSR groups this code into broader clinical categories.
Clinical InformationClinical
Laryngitis
inflammation of the laryngeal mucosa, including the vocal cords. laryngitis is characterized by irritation, edema, and reduced pliability of the mucosa leading to voice disorders such as aphonia and hoarseness.Viral Laryngitis
acute inflammation of the larynx caused by viruses, including rhinovirus, influenza virus, parainfluenza virus, and adenovirus.
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 J04.0 to ICD-9-CMHistory
The closest ICD-9-CM equivalents under the General Equivalence Mappings.
Code HistoryHistory
Questions About J04.0Overview
Is J04.0 (Acute laryngitis and tracheitis) a billable code?
Yes. This is a billable ICD-10-CM code, specific enough to report acute laryngitis on HIPAA-covered claims from October 1, 2025 through September 30, 2026.
What MS-DRG does J04.0 group to?
When acute laryngitis is the principal diagnosis on an inpatient stay, it groups to MS-DRG 152, 153, with relative weights from 0.7382 to 1.1822 depending on complications. Higher weights mean higher Medicare reimbursement.
What is the ICD-9 equivalent of J04.0?
Under the General Equivalence Mappings, acute laryngitis converts to ICD-9-CM 464.00 (ac laryngitis w/o obst). 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.
