Central Auditory Processing Disorder

Data to calculate the incidence and prevalence of CAPD are not available due to the lack of universal, standardized diagnostic criteria. Guidance from national organizations varies. CAPD diagnosis varies widely depending on the criteria and the assessment instruments used. Some studies have estimated prevalence (the number of cases at a given point in time) as the following:

  • Children:
    • 2%–3% (Chermak & Musiek, 1997; Palfery & Duff, 2007).
    • 7.3%–96% (Wilson & Arnott, 2013).
  • Male to female ratio of 2:1 (Chermak & Musiek, 1997; Palfery & Duff, 2007).
  • Adults 55 and older: 23%–76% (Cooper & Gages, 1991; Golding, Carter, Mitchell, & Hood, 2004; Stach, Spretnjak, & Jerger, 1990).

With the transition to the International Classification of Diseases, Tenth Revision, Clinical Modification (ICD-10-CM; American Medical Association, 2017), audiologists and physicians are able to assign a diagnostic code for CAPD in the medical record and for health insurance claims. Although coding does not address confounding factors of diagnostic criteria or assessment instrument variations, use of the new code will provide data on patients receiving care for CAPD.

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