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AB50 Congenital hearing impairment

International Classification of Diseases for Mortality and Morbidity Statistics, 11th Revision, v2024-01

Both dominant and recessive genes exist which can cause mild to profound impairment. If a family has a dominant gene for deafness it will persist across generations because it will manifest itself in the offspring even if it is inherited from only one parent. If a family had genetic hearing impairment caused by a recessive gene it will not always be apparent as it will have to be passed onto offspring from both parents. Hearing impairment is sustained before the acquisition of language, which occurs due to a congenital condition.

sections/codes in this section (AB50-AB50)

• Congenital conductive hearing loss  (AB50.0)
• Congenital sensorineural hearing loss  (AB50.1)
• Congenital mixed conductive and sensorineural hearing loss  (AB50.2)
• Other specified congenital hearing impairment  (AB50.Y)
• Congenital hearing impairment, unspecified  (AB50.Z)

postcoordination

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