Summary & Overview
CPT 61055: Occipitoatlantal / Atlantoaxial Joint Injection
CPT code 61055 denotes an injection into the occipitoatlantal or atlantoaxial joint region, used to deliver medication for neurologic indications or contrast for imaging. This procedural code captures a technically precise cervical junction approach at the skull–C1 interface or the lateral C1–C2 interval and is relevant to neurology, interventional pain, and interventional radiology services. Nationally, the code matters because it defines coverage and billing for specialty injections performed in sensitive upper-cervical anatomy where imaging guidance and procedural documentation are often required.
Key payers covered in this overview include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find a concise explanation of the clinical context for 61055, the typical service settings where it is performed, and the procedural intent (therapeutic medication delivery or contrast administration). The report summarizes benchmarks for utilization and reimbursement trends, common billing and coding considerations, and potential policy or coverage updates that affect administration of upper-cervical joint injections. The content is intended for clinical coders, revenue cycle managers, and clinicians involved in interventional spine and neuroimaging services seeking a national perspective on coding and payer interactions for this procedure.
Billing Code Overview
CPT code 61055 describes a physician-performed injection into the occipitoatlantal or atlantoaxial region. The provider inserts a needle at the junction between the skull and the first cervical vertebra and directs it toward the sagittal suture, or inserts the needle laterally between the first and second cervical vertebra (also referred to as the atlantooccipital, craniovertebral, or occipitovertebral joint), then injects medication to treat a neurological condition or contrast material for imaging.
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Service type: Targeted occipitoatlantal or atlantoaxial joint injection for therapeutic or diagnostic purposes
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Typical site of service: Outpatient clinic, ambulatory surgery center, or hospital outpatient imaging suite
Clinical & Coding Specifications
Clinical Context
A 58-year-old patient with refractory occipital neuralgia presents to an outpatient interventional pain clinic for targeted pain management. The provider reviews the history, prior failed conservative therapies (medication trials, physical therapy), and recent imaging that rules out an acute mass. The patient is positioned prone with fluoroscopic or CT guidance. After sterile preparation and local anesthesia, the clinician introduces a spinal needle at the occiput–C1 junction (atlantooccipital/craniovertebral joint) either via a midline approach aimed toward the sagittal suture or a lateral approach between C1 and C2. Contrast may be injected to confirm intra-articular placement for diagnostic or imaging purposes; a corticosteroid and anesthetic may be injected for therapeutic benefit. Post-procedure monitoring includes observation for immediate neurologic change, hemodynamic stability, and instructions for activity restriction and follow-up. Typical sites of service are an outpatient ambulatory surgery center, hospital outpatient department, or interventional radiology suite. Common patient scenarios include diagnostic joint injection for pain localization, therapeutic corticosteroid injection for inflammatory or degenerative joint pain at the craniovertebral junction, or injection of contrast for cervical myelography or targeted imaging.
Coding Specifications
| Modifier | Description | When to Use |
|---|---|---|
11 | Office/Outpatient visit | Use when a procedure is performed in an office or outpatient setting reflecting the usual procedural service |