1. R49 Voice and resonance disorders


    • psychogenic voice and resonance disorders (F44.4)
    1. R49.0 Dysphonia

      Inclusion term(s):

      • Hoarseness
    2. R49.1 Aphonia

      Inclusion term(s):

      • Loss of voice
    3. R49.2 Hypernasality and hyponasality

      1. R49.21 Hypernasality

      2. R49.22 Hyponasality

    4. R49.8 Other voice and resonance disorders

    5. R49.9 Unspecified voice and resonance disorder

      Inclusion term(s):

      • Change in voice NOS
      • Resonance disorder NOS
Abbreviations used here:

NEC Not elsewhere classifiable
This abbreviation in the Tabular List represents “other specified”. When a specific code is not available for a condition, the Tabular List includes an NEC entry under a code to identify the code as the “other specified” code.

NOS Not otherwise specified
This abbreviation is the equivalent of unspecified.