Creutzfeldt-Jakob disease, unspecified

This code represents Creutzfeldt-Jakob disease (CJD), a rare, fatal neurodegenerative disorder characterized by rapidly progressive dementia and neurological dysfunction. It is caused by an abnormal prion protein that induces normal proteins to misfold, leading to widespread brain damage. This specific code is used when the type of CJD (e.g., sporadic, variant, iatrogenic, familial) is not documented or cannot be determined.

Use this code when the medical record clearly documents a diagnosis of Creutzfeldt-Jakob disease, but the specific etiology or form of the disease is not specified by the provider. This code is appropriate for initial diagnosis or follow-up encounters where the "unspecified" nature of the CJD is consistently maintained in the documentation.

• Avoid using this code if the documentation specifies a particular type of CJD; instead, use the more specific code available.
• Query the provider for clarification on the type of CJD if possible, to allow for more precise coding.
• This code should be sequenced as the primary diagnosis when CJD is the reason for the encounter.