Voice and resonance disorders (R49)

Clinical Information for Voice and resonance disorders (R49)

Dysphonia - Difficulty and/or pain in PHONATION or speaking.

Aphonia - Complete loss of phonation due to organic disease of the larynx or to nonorganic (i.e., psychogenic) causes.

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.

Phonation - The process of producing vocal sounds by means of VOCAL CORDS vibrating in an expiratory blast of air.

Instructional Notations

Type 1 Excludes Type 1 Excludes
A type 1 excludes note is a pure excludes note. It means "NOT CODED HERE!" An Excludes1 note indicates that the code excluded should never be used at the same time as the code above the Excludes1 note. An Excludes1 is used when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.

  • psychogenic voice and resonance disorders F44.4