Glycogen storage disease, unspecified

This code signifies a metabolic disorder characterized by defects in glycogen synthesis or breakdown, leading to abnormal glycogen accumulation in various tissues. These defects can result in a range of clinical manifestations, including hepatomegaly, hypoglycemia, muscle weakness, and growth retardation. The "unspecified" nature indicates that the specific enzyme deficiency or type of glycogen storage disease has not been determined or documented.

Use this code when documentation confirms a diagnosis of glycogen storage disease, but the specific type (e.g., Type I, Type II, Type III) is not identified by the provider. This is appropriate when initial diagnostic workup is ongoing, or when the medical record lacks the specificity to assign a more precise code. Supporting documentation would include physician notes indicating "glycogen storage disease, unspecified type" or similar language.

• Avoid using this code if the medical record specifies a particular type of glycogen storage disease; instead, assign the more specific code (e.g., E74.01 for Von Gierke disease).
• Query the provider for clarification if "glycogen storage disease" is documented without further specification, to determine if a more precise code can be assigned.
• This code should be sequenced as a primary diagnosis when it is the reason for the encounter or hospitalization.