Usher syndrome, unspecified

This code represents Usher syndrome, a rare genetic disorder characterized by combined hearing loss and progressive vision impairment due to retinitis pigmentosa. The "unspecified" designation indicates that the specific type of Usher syndrome (e.g., Type 1, 2, or 3) has not been documented by the provider.

Use this code when the medical record clearly states a diagnosis of Usher syndrome, but the specific type is not identified or further specified. This code is appropriate when the provider's documentation lacks the detail to assign a more specific Usher syndrome code.

• Avoid using this code if the documentation specifies the type of Usher syndrome; instead, use the appropriate type-specific code (e.g., Q99.811 for Type 1, Q99.812 for Type 2).
• Always query the provider for clarification on the specific type of Usher syndrome if possible, to allow for more precise coding.
• This code should be sequenced as a primary diagnosis when Usher syndrome is the reason for the encounter, or as a secondary diagnosis when it is a co-morbidity affecting care.