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L.5.01.591
Ztalmy (ganaxolone)
Please perform a formulary drug search on your patient’s member ID to ensure the prescription drug is covered under their benefit plan. The medication(s) in this medical policy may not be covered under a specific member’s benefit plan.
Cyclin-dependent kinase-like 5 (CDKL5) deficiency disorder (CDD) is a developmental encephalopathy caused by pathogenic variants in the gene CDKL5. This unique disorder includes early infantile onset refractory epilepsy, hypotonia, developmental intellectual and motor disabilities, and cortical visual impairment. The CDKL5 gene is located on the X chromosome. Therefore, females are affected more frequently than males (4:1). Males who are affected appear to be more severely affected unless they have evidence of two or more populations of cells with different genotypes (mosaicism).
Ztalmy (ganaxolone) is indicated for the treatment of seizures associated with cyclin-dependent kinase-like 5 (CDKL5) deficiency disorder (CDD) in patients 2 years of age and older.
Ztalmy (ganaxolone) is considered not medically necessaryas there are other treatment options covered by the Plan.
Services related to delivery and/or administration of a medication which have not been approved through the BCBSMS PA review process will be considered not medically necessary.
State Health Plan (State and School Employees): The prescription drug(s) in this medical policy may be covered under a prescription drug benefit plan administered by the State Health Plan’s Pharmacy Benefit Manager. Please perform a formulary drug search at https://www.dfa.ms.gov/cvs-caremark and submit any required Prior Authorization Requests for coverage determination to the Plan’s Pharmacy Benefit Manager. Services related to delivery and/or administration of a medication determined to be not medically necessary will also be considered not medically necessary. Services related to delivery and/or administration of a self-administered drug are not covered.
The coverage guidelines outlined in the Medical Policy Manual should not be used in lieu of the Member's specific benefit plan language.
Medically Necessary is defined as those services, treatments, procedures, equipment, drugs, devices, items or supplies furnished by a covered Provider that are required to identify or treat a Member's illness, injury or Mental Health Disorders, and which Company determines are covered under this Benefit Plan based on the criteria as follows in A through D:
consistent with the symptoms or diagnosis and treatment of the Member's condition, illness, or injury; and
appropriate with regard to standards of good medical practice; and
not solely for the convenience of the Member, his or her Provider; and
the most appropriate supply or level of care which can safely be provided to Member. When applied to the care of an Inpatient, it further means that services for the Member's medical symptoms or conditions require that the services cannot be safely provided to the Member as an Outpatient.
For the definition of medical necessity, “standards of good medical practice” means standards that are based on credible scientific evidence published in peer-reviewed medical literature generally recognized by the relevant medical community, and physician specialty society recommendations, and the views of medical practitioners practicing in relevant clinical areas and any other relevant factors. BCBSMS makes no payment for services, treatments, procedures, equipment, drugs, devices, items or supplies which are not documented to be Medically Necessary. The fact that a Physician or other Provider has prescribed, ordered, recommended, or approved a service or supply does not in itself, make it Medically Necessary.
BCBSMS may request medical records for determination of medical necessity. When medical records are requested, letters of support and/or explanation are often useful, but are not sufficient documentation unless all specific information needed to make a medical necessity determination is included.
Investigative is defined as the use of any treatment procedure, facility, equipment, drug, device, or supply not yet recognized as a generally accepted standard of good medical practice for the treatment of the condition being treated and; therefore, is not considered medically necessary. For the definition of Investigative, “generally accepted standards of medical practice” means standards that are based on credible scientific evidence published in peer-reviewed medical literature generally recognized by the relevant medical community, and physician specialty society recommendations, and the views of medical practitioners practicing in relevant clinical areas and any other relevant factors. In order for equipment, devices, drugs or supplies [ie, technologies], to be considered not investigative, the technology must have final approval from the appropriate governmental bodies, and scientific evidence must permit conclusions concerning the effect of the technology on health outcomes, and the technology must improve the net health outcome, and the technology must be as beneficial as any established alternative and the improvement must be attainable outside the testing/investigational setting.
11/03/2022: New policy added.
02/01/2023: Policy Exceptions updated to add the following: State Health Plan (State and School Employees): The prescription drug(s) in this medical policy may be covered under a prescription drug benefit plan administered by the State Health Plan’s Pharmacy Benefit Manager. Please perform a formulary drug search at https://www.dfa.ms.gov/cvs-caremark and submit any required Prior Authorization Requests for coverage determination to the Plan’s Pharmacy Benefit Manager. Services related to delivery and/or administration of a medication determined to be not medically necessary will also be considered not medically necessary. Services related to delivery and/or administration of a self-administered drug are not covered.
03/20/2025: Policy reviewed and approved by the Pharmacy & Therapeutics (P&T) Committee. Policy description updated. Policy statement revised to state that Ztalmy (ganaxolone) is considered not medically necessary as there are other treatment options covered by the Plan. Sources updated.
Ztalmy prescribing information. Marinus Pharmaceuticals, Inc. April 2024. Last accessed February 2025.
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