93896 Insurance Policy Changes

CPT 93896, in plain terms, covers Add-on for testing how the arteries inside the skull respond to a vasoreactivity challenge, billed along with the complete transcranial Doppler study. CPT 93896 is referenced in 4 tracked payer policy changes from Aetna and Blue Cross and Blue Shield of Louisiana. For billers and coders, staying current on payer-specific coverage criteria, reimbursement rules, and prior-authorization requirements for CPT 93896 is critical to clean claim submission. Each entry below links to the full policy analysis with effective dates and action steps.

Official descriptor: CPT 93896 on AAPC

Aetna · Identified Oct 18, 2026Medium impact
Cerebral Perfusion Studies (CPB 0663, reviewed 2026-10-14)
Aetna's Cerebral Perfusion Studies policy (CPB 0663) sets when CT and MRI perfusion studies of the brain are medically necessary. CT perfusion is covered for evaluating acute stroke (less than 24 hours) including hemorrhagic stroke, transient ischemic attacks, follow-up of cerebral ischemia or infarction, planning and evaluating therapy for arterial occlusive disease, identifying cerebral hyperperfusion syndrome after revascularization, and evaluating the vascular status of solid tumors where MRI is degraded by susceptibility artifact. MRI perfusion is covered for diagnosing and following mass lesions such as glioma, and for assessing acute stroke penumbra, hemodynamic significance of cervical or intracranial stenosis, revascularization efficacy and vasospasm. The policy lists many other uses as experimental, investigational or unproven, including CT perfusion for confirmation of brain death, evaluation of head trauma, and evaluation of vasospasm after aneurysmal subarachnoid hemorrhage.
Aetna · Identified Aug 15, 2026Medium impact
Cerebral Perfusion Studies (CPB 0663, reviewed 2026-04-14)
Aetna considers CT perfusion studies of the brain medically necessary for evaluating acute stroke (less than 24 hours), including hemorrhagic stroke, subdural hemorrhage and transient ischemic attacks, for following up cerebral ischemia or infarction, for planning therapy for cervical or intracranial arterial occlusive disease, for identifying cerebral hyperperfusion after revascularization, and for evaluating the vascular status of solid tumors when MRI is degraded by susceptibility artifact. Aetna considers MRI perfusion studies medically necessary for diagnosing and following mass lesions such as glioma, for assessing acute stroke penumbra, and for assessing the hemodynamic significance of cervical or intracranial vascular stenosis and the efficacy of revascularization. Aetna considers CT perfusion experimental, investigational or unproven for indications including confirmation of brain death, differentiation of lung cancer from benign lesions, evaluation of head trauma and evaluation of cerebral vasospasm, and considers MRI perfusion unproven for indications including evaluation of traumatic brain injury, evaluation of persistent pain and prognostication of obstructive sleep apnea.
Aetna · Identified Aug 14, 2026Medium impact
Transcranial Doppler Ultrasonography (CPB 0353, reviewed 2026-05-22)
Aetna considers transcranial Doppler ultrasonography medically necessary for indications including assessing collateral blood flow and embolization during carotid endarterectomy, evaluating persons with suspected brain death, detecting microemboli after stroke or transient ischemic attack, evaluating giant cell arteritis, and assessing stroke risk in children aged 2 to 16 years with sickle cell anemia. Aetna considers it experimental, investigational, or unproven for all other indications, including screening for carotid artery stenosis in asymptomatic adults, managing traumatic brain injury, migraine headaches, epilepsy, and evaluating adults with sickle cell anemia. The covered CPT codes are 93886, 93888, 93890, 93892, 93893, 93896, 93897 and 93898 when selection criteria are met.
Blue Cross and Blue Shield of Louisiana · Identified Jun 20, 2026Medium impact
Network News - 1st Quarter 2025
Already effective July 1, 2025, Louisiana Blue accepts only the CAQH application for professional credentialing and recredentialing, and the Louisiana Standardized Credentialing Application was accepted for participating providers until June 30. Added codes in the Diagnostic and Therapeutic Services and Outpatient Procedure Services code ranges have effective dates of January 1, 2025 and April 1, 2025, including 15013, 15014, 38226 and 38227. For infusion therapy, the prior authorization must include all codes billed, including administration codes, or penalties will be applied to the claim.

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REFERENCE DATA

Payers with rules2

Payers requiring prior auth2

CalViva Health · Effective December 31, 2025
Prior authorization required
CalViva Health CMS-0057-F prior authorization requirements
Community Health Plan of Imperial Valley · Effective December 31, 2025
Prior authorization required
Community Health Plan of Imperial Valley CMS-0057-F prior authorization requirements

FREQUENTLY ASKED QUESTIONS

Does CalViva Health require prior authorization for 93896?

CalViva Health lists 93896 on CalViva Health CMS-0057-F prior authorization requirements for medicaid managed plans (list dated December 31, 2025). Verify with the payer before scheduling.

Does Community Health Plan of Imperial Valley require prior authorization for 93896?

Community Health Plan of Imperial Valley lists 93896 on Community Health Plan of Imperial Valley CMS-0057-F prior authorization requirements for medicaid managed plans (list dated December 31, 2025). Verify with the payer before scheduling.

What insurance policy changes affect CPT 93896?

There are 4 tracked policy changes affecting CPT 93896, including updates from Aetna, Blue Cross and Blue Shield of Louisiana. Each change may modify coverage criteria, reimbursement rates, or prior-authorization requirements.

Which payers have updated policy for CPT 93896?

Payers that have issued tracked updates for CPT 93896 include: Aetna, Blue Cross and Blue Shield of Louisiana.

How do I get notified when CPT 93896 policy changes?

Create a free account at PolicyChanges.app and save a search filtered to CPT 93896. You will get an email when new policy changes reference this code: daily or weekly, your choice, on every plan.

Why do payers change policies for CPT 93896?

Payers revise policies for individual billing codes to align with updated clinical guidelines, CMS rule changes, fraud and abuse prevention measures, or network cost-management goals. Changes can affect medical necessity criteria, place-of-service restrictions, bundling rules, or whether a code requires prior authorization.

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Prior authorization lists, coverage criteria, NCCI edits and Medicare coverage articles for 93896 in one place.

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All billing codes J3590 C9399 J3490 99215 99213 99202

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Cerebral Perfusion Studies (CPB 0663, reviewed 2026-10-14)

Cerebral Perfusion Studies (CPB 0663, reviewed 2026-04-14)

Transcranial Doppler Ultrasonography (CPB 0353, reviewed 2026-05-22)

Network News - 1st Quarter 2025

Prior authorization required