2020 ICD-10-CM Diagnosis Code R49.9

Unspecified voice and resonance disorder

    2016 2017 2018 2019 2020 Billable/Specific Code
  • R49.9 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
  • The 2020 edition of ICD-10-CM R49.9 became effective on October 1, 2019.
  • This is the American ICD-10-CM version of R49.9 - other international versions of ICD-10 R49.9 may differ.
Applicable To
  • Change in voice NOS
  • Resonance disorder NOS
The following code(s) above R49.9 contain annotation back-references
Annotation Back-References
In this context, annotation back-references refer to codes that contain:
  • Applicable To annotations, or
  • Code Also annotations, or
  • Code First annotations, or
  • Excludes1 annotations, or
  • Excludes2 annotations, or
  • Includes annotations, or
  • Note annotations, or
  • Use Additional annotations
that may be applicable to R49.9:
  • R00-R99
    2020 ICD-10-CM Range R00-R99

    Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified

    Note
    • This chapter includes symptoms, signs, abnormal results of clinical or other investigative procedures, and ill-defined conditions regarding which no diagnosis classifiable elsewhere is recorded.
    • Signs and symptoms that point rather definitely to a given diagnosis have been assigned to a category in other chapters of the classification. In general, categories in this chapter include the less well-defined conditions and symptoms that, without the necessary study of the case to establish a final diagnosis, point perhaps equally to two or more diseases or to two or more systems of the body. Practically all categories in the chapter could be designated 'not otherwise specified', 'unknown etiology' or 'transient'. The Alphabetical Index should be consulted to determine which symptoms and signs are to be allocated here and which to other chapters. The residual subcategories, numbered .8, are generally provided for other relevant symptoms that cannot be allocated elsewhere in the classification.
    • The conditions and signs or symptoms included in categories R00-R94 consist of:
    • (a) cases for which no more specific diagnosis can be made even after all the facts bearing on the case have been investigated;
    • (b) signs or symptoms existing at the time of initial encounter that proved to be transient and whose causes could not be determined;
    • (c) provisional diagnosis in a patient who failed to return for further investigation or care;
    • (d) cases referred elsewhere for investigation or treatment before the diagnosis was made;
    • (e) cases in which a more precise diagnosis was not available for any other reason;
    • (f) certain symptoms, for which supplementary information is provided, that represent important problems in medical care in their own right.
    Type 2 Excludes
    • abnormal findings on antenatal screening of mother (O28.-)
    • certain conditions originating in the perinatal period (P04-P96)
    • signs and symptoms classified in the body system chapters
    • signs and symptoms of breast (N63, N64.5)
    Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified
  • R49
    ICD-10-CM Diagnosis Code R49

    Voice and resonance disorders

      2016 2017 2018 2019 2020 Non-Billable/Non-Specific Code
    Type 1 Excludes
    • psychogenic voice and resonance disorders (F44.4)
    Voice and resonance disorders
Approximate Synonyms
  • Speech resonance disoder
  • Speech resonance disorder
Clinical Information
  • A disorder characterized by a change in the sound and/or speed of the voice.
  • Change in the sound and/or speed of the voice. Causes include laryngeal polyp, laryngitis, laryngeal carcinoma, throat carcinoma, parkinson's disease, multiple sclerosis, stroke, hypothyroidism, oral surgery, tracheostomy, tracheal injury, and laryngeal injury.
ICD-10-CM R49.9 is grouped within Diagnostic Related Group(s) (MS-DRG v37.0):
  • 154 Other ear, nose, mouth and throat diagnoses with mcc
  • 155 Other ear, nose, mouth and throat diagnoses with cc
  • 156 Other ear, nose, mouth and throat diagnoses without cc/mcc

Convert R49.9 to ICD-9-CM

Code History
  • 2016 (effective 10/1/2015): New code (first year of non-draft ICD-10-CM)
  • 2017 (effective 10/1/2016): No change
  • 2018 (effective 10/1/2017): No change
  • 2019 (effective 10/1/2018): No change
  • 2020 (effective 10/1/2019): No change

Diagnosis Index entries containing back-references to R49.9:

ICD-10-CM Codes Adjacent To R49.9
R48.3 Visual agnosia
R48.8 Other symbolic dysfunctions
R48.9 Unspecified symbolic dysfunctions
R49 Voice and resonance disorders
R49.0 Dysphonia
R49.1 Aphonia
R49.2 Hypernasality and hyponasality
R49.21 Hypernasality
R49.22 Hyponasality
R49.8 Other voice and resonance disorders
R49.9 Unspecified voice and resonance disorder
R50 Fever of other and unknown origin
R50.2 Drug induced fever
R50.8 Other specified fever
R50.81 Fever presenting with conditions classified elsewhere
R50.82 Postprocedural fever
R50.83 Postvaccination fever
R50.84 Febrile nonhemolytic transfusion reaction
R50.9 Fever, unspecified
R51 Headache
R52 Pain, unspecified

Reimbursement claims with a date of service on or after October 1, 2015 require the use of ICD-10-CM codes.