CPT code 70551 covers magnetic resonance imaging of the brain without contrast material. This study is used for neurological evaluation when contrast is not required or is contraindicated.
Most major insurers require prior authorization for MRI brain without contrast. Clinical documentation must demonstrate why advanced imaging is needed and that the study will impact clinical decision-... Always verify requirements with the specific insurer and plan.
MRI brain without contrast is used to evaluate headaches, seizures, developmental abnormalities, hydrocephalus, and follow-up imaging for known conditions. It is often the initial imaging study for neurological complaints and may be sufficient when contrast is not needed.
Most major insurers require prior authorization for MRI brain without contrast. Clinical documentation must demonstrate why advanced imaging is needed and that the study will impact clinical decision-making. Some insurers may require a trial period of symptom management before approving routine headache evaluation.
Note: PA requirements vary by specific plan and member. Always verify requirements with the insurer before scheduling.
Document specific neurological symptoms and exam abnormalities.
For headache evaluation, document failed medication trials and headache characteristics.
Include any red flag features that support urgent imaging.
Explain why non-contrast MRI is appropriate (vs. with contrast) for the clinical question.
Use specific ICD-10 codes that match approved clinical indications.
Greenlight Medical detects when CPT 70551 requires prior auth, assembles all documentation automatically, and submits to the correct payer portal. No manual lookups, no phone calls, no faxes.
See Greenlight in ActionYes, MRI brain without contrast (CPT 70551) requires prior authorization from most major insurers. Clinical documentation must demonstrate medical necessity for the study.
MRI without contrast is appropriate for initial evaluation of many neurological conditions, follow-up imaging for known stable conditions, patients with contrast allergies or renal insufficiency, and conditions where contrast does not add diagnostic value. Your ordering provider determines the appropriate protocol.
CPT 70551 is MRI brain without contrast only, while CPT 70553 includes both non-contrast and contrast-enhanced sequences. CPT 70553 is typically ordered when there is a need to evaluate lesions, tumors, or conditions where contrast enhancement provides additional diagnostic information.