Grade 4 Hearing Impaired, CTCAE

**Semantic type:** Finding

**Definition:** Adult: Nonservicable hearing; decrease in hearing to profound bilateral loss (absolute threshold >80 dB HL at 2 kHz and above); Pediatric: Audiologic indication for cochlear implant; >40 dB HL (i.e., 45 dB HL or more); SNHL at 2 kHz and above

**Synonyms:** - Grade 4 Hearing impaired - Grade 4 Hearing impaired