AHA Coding Clinic® for ICD-10-CM and ICD-10-PCS - 2020 Issue 4; New/Revised ICD-10-CM Codes
Cyclin-Dependent Kinase-Like 5 Deficiency Disorder
Code G40.42, Cyclin-Dependent Kinase-Like 5 Deficiency Disorder, was created to identify a developmental epileptic encephalopathy that is caused by mutations in the cyclin-dependent kinase-like 5 (CDKL5) gene. The CDKL5 gene provides instructions for making a protein that is essential for normal brain and neuron development. A deficiency of CDKL5 reduces the amount of functional CDKL5 protein or alters its activity in neurons. The hallmark of CDKL5 deficiency disorder is the onset of seizures at a very young age that are severe and difficult to control with medication. There are neurodevelopmental impairments that cause delays in cognitive, motor...
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Article Overview
This article provides a high-level overview of cyclin-dependent kinase-like 5 deficiency disorder (CDKL5 deficiency disorder) and why it has a dedicated diagnosis code. It is intended for readers who need to understand the condition’s clinical scope, associated neurodevelopmental and systemic manifestations, and the multidisciplinary care context relevant to coding and documentation review.
Why This Topic Matters
Accurate recognition of CDKL5 deficiency disorder supports clearer documentation of a rare epilepsy-related neurodevelopmental condition and helps distinguish it from other causes of early-onset seizures and developmental impairment.
What You Will Learn
- What CDKL5 deficiency disorder is at a broad clinical level
- Why the condition is associated with early severe seizures and developmental impairment
- What kinds of neurologic, motor, speech, visual, autonomic, gastrointestinal, and musculoskeletal issues may be discussed in the documentation context
- Why multidisciplinary management is relevant to the condition
Who Should Read This
- Medical coders
- Coding auditors
- Clinical documentation specialists
- Health information management professionals
- Neurology and pediatrics practices
Codes Discussed
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