2026 ICD-10-CM Diagnosis Code R06.1Stridor

ICD-10-CM Codes›R00–R99›R00-R09›R06

ICD-10-CM R06.1
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

R06.1 is a billable ICD-10-CM diagnosis code for stridor. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026). As a symptom code, it should not be used as a principal diagnosis once a related definitive diagnosis has been established. Coders also document this condition as biphasic stridor. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Respiratory signs and symptoms.

Code Identity

ICD-10-CM Code
R06.1
Billable Status
Yes — Valid for Submission
Code Describes
Stridor
Short Description
Stridor
Same as the full description in the CMS dataset.
Parent Code
R06
Abnormalities of breathing

Code Classification

ChapterR00–R99Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified
SectionR00-R09Symptoms and signs involving the circulatory and respiratory systems
CategoryR06Abnormalities of breathing
This CodeR06.1Stridor

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Biphasic stridor
  • Expiratory stridor
  • Inspiratory stridor
  • Intermittent stridor
  • Laryngeal stridor
  • Laryngismus
  • Stridor
  • Wheezing stridor

Tabular List NotesGuidance

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

Type 1 Excludes

  • congenital laryngeal stridor P28.89
  • laryngismus stridulus J38.5

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.

    • Stridor

Clinical ClassificationClinical

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

CCSR SYM013
Respiratory signs and symptoms
Default principal diagnosis: inpatient Yes · outpatient Yes

Clinical InformationClinical

  • Laryngismus

    a disorder in which the adductor muscles of the vocal cords exhibit increased activity leading to laryngeal spasm. laryngismus causes closure of the vocal folds and airflow obstruction during inspiration.

  • Grade 3 Stridor, CTCAE|Grade 3 Stridor

    respiratory distress; medical intervention indicated; limiting self-care adl or severe impact on age-appropriate normal daily activity (pediatric)

  • Wheezing/Stridor|Wheezing

    a high pitched breathing sound that results from restricted airways.

  • Grade 3 Stridor, CTCAE|Grade 3 Stridor

    respiratory distress limiting self care adl; medical intervention indicated

  • Grade 4 Stridor, CTCAE|Grade 4 Stridor

    life-threatening airway compromise; urgent intervention indicated (e.g., tracheotomy or intubation)

  • Grade 5 Stridor, CTCAE|Grade 5 Stridor

    death

  • Stridor

    a symptom resulting from laryngeal obstruction. it is characterized by a high pitched breathing sound.

  • Stridor, CTCAE|Stridor|Stridor

    a disorder characterized by a high pitched breathing sound due to laryngeal or upper airway obstruction.

  • Wheezing/Stridor

    a high pitched breathing sound that results from restricted airways.

Patient EducationClinical

Breathing Problems

When you're short of breath, it's hard or uncomfortable for you to take in the oxygen your body needs. You may feel as if you're not getting enough air. Sometimes you can have mild breathing problems because of a stuffy nose or intense exercise. But shortness of breath can also be a sign of a serious disease.

Read the full article at MedlinePlus

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

Convert R06.1 to ICD-9-CMHistory

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

ICD-9-CM
786.1 Stridor
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 R06.1Overview

Is R06.1 (Abnormalities of breathing) a billable code?

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

Can R06.1 be a principal diagnosis?

Use it with care. This is a symptom code, so once a definitive diagnosis explaining the stridor is established, that condition takes the principal position instead.

What is the ICD-9 equivalent of R06.1?

Under the General Equivalence Mappings, stridor converts to ICD-9-CM 786.1 (stridor). 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.