2026 ICD-10-CM Diagnosis Code J00Acute nasopharyngitis [common cold]

ICD-10-CM Codes›J00–J99›J00-J06›J00

ICD-10-CM J00
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

J00 is a billable ICD-10-CM diagnosis code for acute nasopharyngitis [common cold]. 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

ICD-10-CM Code
J00
Billable Status
Yes — Valid for Submission
Code Describes
Acute nasopharyngitis [common cold]
Short Description
Acute nasopharyngitis [common cold]
Same as the full description in the CMS dataset.
Chapter
J00-J06
Acute upper respiratory infections

Code Classification

ChapterJ00–J99Diseases of the respiratory system
SectionJ00-J06Acute upper respiratory infections
CategoryJ00Acute nasopharyngitis [common cold]
This CodeJ00Acute nasopharyngitis [common cold]

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Acute irritant rhinitis
  • Acute nasopharyngitis caused by respiratory syncytial virus
  • Acute rhinosinusitis
  • Acute upper respiratory infection caused by respiratory syncytial virus
  • Acute viral pharyngitis
  • Common cold
  • Irritant rhinitis
  • Nasopharyngitis
  • Non-infective non-allergic rhinitis
  • Parainfluenza virus pharyngitis
  • Parainfluenza virus rhinopharyngitis
  • Respiratory syncytial virus pharyngitis
  • Rhinosinusitis

Tabular List NotesGuidance

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

Inclusion Terms

  • Acute rhinitis
  • Coryza (acute)
  • Infective nasopharyngitis NOS
  • Infective rhinitis
  • Nasal catarrh, acute
  • Nasopharyngitis NOS

Type 1 Excludes

Type 2 Excludes

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.

    • Catarrh, catarrhal(acute) (febrile) (infectious) (inflammation)
    • Catarrh, catarrhal(acute) (febrile) (infectious) (inflammation)
      • nasopharyngeal (chronic)
        • acute
    • Cold
    • Cold
      • common (head)
    • Cold
      • head
    • Cold
      • symptoms
    • Cold
      • virus
    • Common
      • cold (head)
    • Coryza(acute)
    • Drip, postnasal(chronic)
      • due to
        • common cold
    • Fever(inanition) (of unknown origin) (persistent) (with chills) (with rigor)
      • catarrhal (acute)
    • Infection, infected, infective(opportunistic)
      • respiratory (tract) NEC
        • rhinovirus
    • Inflammation, inflamed, inflammatory(with exudation)
      • catarrhal
    • Nasopharyngitis(acute) (infective) (streptococcal) (subacute)
    • Postnasal drip
      • due to
        • common cold
    • Rhinitis(atrophic) (catarrhal) (chronic) (croupous) (fibrinous) (granulomatous) (hyperplastic) (hypertrophic) (membranous) (obstructive) (purulent) (suppurative) (ulcerative)
      • acute
    • Rhinitis(atrophic) (catarrhal) (chronic) (croupous) (fibrinous) (granulomatous) (hyperplastic) (hypertrophic) (membranous) (obstructive) (purulent) (suppurative) (ulcerative)
      • infective
    • Rhinitis(atrophic) (catarrhal) (chronic) (croupous) (fibrinous) (granulomatous) (hyperplastic) (hypertrophic) (membranous) (obstructive) (purulent) (suppurative) (ulcerative)
      • pneumococcal
    • Symptoms NEC
      • cold
    • Symptoms NEC
      • viral cold

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

Clinical InformationClinical

  • Nasopharyngitis

    inflammation of the nasopharynx, usually including its mucosa, related lymphoid structure, and glands.

  • Common Cold

    a catarrhal disorder of the upper respiratory tract, which may be viral or a mixed infection. it generally involves a runny nose, nasal congestion, and sneezing.

  • Rhinovirus

    a genus of picornaviridae inhabiting primarily the respiratory tract of mammalian hosts. it includes over 100 human serotypes associated with the common cold.

  • Allergic Fungal Sinusitis

    fungal infection in the paranasal sinuses characterized by common allergy respiratory symptoms, recurrent nasal polyps and/or asthma with buildup of allergic mucin.

  • Rhinosinusitis

    obstruction of sinus drainage into the nasal cavity and inflammation of the nasal mucosa in the paranasal sinuses.

  • Nasopharynx

    the top portion of the pharynx situated posterior to the nose and superior to the soft palate. the nasopharynx is the posterior extension of the nasal cavities and has a respiratory function.

  • Acute Nasopharyngitis|Common Cold

    an acute inflammatory process that affects the nasopharynx. it is caused by viruses. signs and symptoms include fever, coughing, sneezing, and sore throat.

  • Nasopharyngitis

    an inflammatory process that affects the nasopharynx.

  • Rhinosinusitis

    inflammation of the mucous membranes lining the nose and paranasal sinuses.

Patient EducationClinical

Common Cold

The common cold is a mild infection of your upper respiratory tract (which includes your nose and throat). Colds are probably the most common illness. Adults have an average of 2-3 colds per year, and children have even more. Colds are more common in the winter and spring, but you can get them at any time.

The full article covers:

  • What is the common cold?
  • What causes the common cold?
  • What are the symptoms of the common cold?
  • What are the treatments for the common cold?
  • Can the common cold be prevented?

Read the full article at MedlinePlus

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

Convert J00 to ICD-9-CMHistory

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

ICD-9-CM
460 Acute nasopharyngitis
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 J00Overview

Is J00 (Acute nasopharyngitis [common cold]) a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report acute nasopharyngitis [common cold] on HIPAA-covered claims from October 1, 2025 through September 30, 2026.

What MS-DRG does J00 group to?

When acute nasopharyngitis [common cold] 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 J00?

Under the General Equivalence Mappings, acute nasopharyngitis [common cold] converts to ICD-9-CM 460 (acute nasopharyngitis). 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.