ICD-10 Z99.89 is officially defined as "Dependence on other enabling machines and devices." code Z99.89 is referenced in 5 tracked payer policy changes from Health Net, Blue Cross & Blue Shield of Mississippi, and 1 other payer. For billers and coders, staying current on payer-specific coverage criteria, reimbursement rules, and prior-authorization requirements for code Z99.89 is critical to clean claim submission. Each entry below links to the full policy analysis with effective dates and action steps.
Health Net updated 16 medical policies with new prior authorization requirements, billing code changes, and coverage criteria changes for Q2 2021. Key changes include new CPT codes for ADHD testing that are now not medically necessary, updated HCPCS codes for skin substitutes, and revised criteria for multiple procedures including gender affirming care and spinal cord stimulation.
Health Net updated multiple medical policies for Q2 2021, including new policies for TMS treatment, EMG/nerve studies, and nasal valve repair, plus significant updates to ADHD testing codes, gender affirming procedures, and pain management nerve blocks. Multiple CPT, HCPCS, and ICD-10 codes were added, removed, or modified across various specialties.
CalViva Health (Medi-Cal) updated multiple medical policies for Q2 2021, affecting prior authorization requirements, billing codes, and coverage criteria across numerous specialties. Key changes include updated CPT codes for ADHD testing, nerve studies, and spinal procedures, plus revised criteria for gender-affirming procedures, pain management, and wound care.
This Blue Cross Blue Shield Association policy states that spacers for use with metered dose inhalers and peak flow meters for patients with respiratory disorders are medically necessary. Special features such as computerized recording devices, including on the AirWatch system, are considered convenience enhancements and are not eligible for additional coverage. When noninvasive ear or pulse oximetry testing is performed in a professional's office, the pulse oximeter is considered integral to the professional's medical or surgical care, and separate payment will not be made for it. The 03/27/2026 policy update removed the ICD-9 diagnosis codes.
Medical Mutual of Ohio has implemented HEDIS exclusion guidelines for advanced illness and frailty patients. Billing teams must use specific ICD-10 codes to exclude eligible patients (ages 66-80 with both conditions, or 81+ with frailty) from certain HEDIS quality measures like cancer screenings and diabetes management.
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