2026 ICD-10-CM Diagnosis Code R49.9Unspecified voice and resonance disorder

ICD-10-CM Codes›R00–R99›R47-R49›R49

ICD-10-CM R49.9
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

R49.9 is a billable ICD-10-CM diagnosis code for unspecified voice and resonance disorder. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026) and groups to MS-DRG 154 through 156. 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 abnormal voice. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Other general signs and symptoms.

Code Identity

ICD-10-CM Code
R49.9
Billable Status
Yes — Valid for Submission
Code Describes
Unspecified voice and resonance disorder
Short Description
Unspecified voice and resonance disorder
Same as the full description in the CMS dataset.
Parent Code
R49
Voice and resonance disorders

Code Classification

ChapterR00–R99Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified
SectionR47-R49Symptoms and signs involving speech and voice
CategoryR49Voice and resonance disorders
This CodeR49.9Unspecified voice and resonance disorder

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Abnormal voice
  • Change in voice
  • Decreased vocal resonance
  • Finding of function of vocal cords
  • Pathologic change of voice
  • Vocal cord dysfunction
  • Vocal resonance finding
  • Voice disorder due to iatrogenic factor

Tabular List NotesGuidance

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

Inclusion Terms

  • Change in voice NOS
  • Resonance disorder NOS

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.

    • Change(s) (in) (of)
      • voice
    • Defect, defective
      • voice
    • Disorder(of)
      • resonance
    • Disorder(of)
      • voice
    • Disturbance(s)
      • voice
    • Voice
      • change

Clinical ClassificationClinical

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

CCSR SYM016
Other general signs and symptoms
Default principal diagnosis: inpatient Yes · outpatient Yes

Clinical InformationClinical

  • Vocal Cord Dysfunction

    a disorder characterized by an intermittent abnormal vocal cords movement toward the midline during inspiration or expiration resulting in upper airway obstruction.

Patient EducationClinical

Voice Disorders

Voice is the sound made by air passing from your lungs through your larynx, or voice box. In your larynx are your vocal cords, two bands of muscle that vibrate to make sound. For most of us, our voices play a big part in who we are, what we do, and how we communicate. Like fingerprints, each person's voice is unique.

Read the full article at MedlinePlus

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

Convert R49.9 to ICD-9-CMHistory

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

ICD-9-CM
784.40 Voice/resonance dis NOS
Approximate The match is approximate rather than exact.

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 R49.9Overview

Is R49.9 (Voice and resonance disorders) a billable code?

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

What MS-DRG does R49.9 group to?

When unspecified voice and resonance disorder is the principal diagnosis on an inpatient stay, it groups to MS-DRG 154, 155, 156, with relative weights from 0.6911 to 1.5635 depending on complications. Higher weights mean higher Medicare reimbursement.

Can R49.9 be a principal diagnosis?

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

What is the ICD-9 equivalent of R49.9?

Under the General Equivalence Mappings, unspecified voice and resonance disorder converts to ICD-9-CM 784.40 (voice/resonance dis NOS). The mapping is approximate, so confirm the match fits the documentation.

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.