Summary & Overview
CPT 62321: Cervical or Thoracic Interlaminar Epidural Injection with Imaging Guidance
CPT code 62321 is a widely utilized billing code for interlaminar epidural or subarachnoid injections in the cervical or thoracic spine, performed with imaging guidance. This procedure is essential for the management of pain and neurological conditions, allowing for the delivery of diagnostic or therapeutic substances directly to targeted spinal regions. Nationally, this code is recognized by major payers including Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare, reflecting its broad clinical and reimbursement relevance.
The publication provides a comprehensive overview of CPT 62321, including payer coverage, clinical indications, and typical settings where the procedure is performed. Readers will gain insight into current benchmarks, policy updates, and the clinical context surrounding this injection procedure. The analysis also highlights associated modifiers, provider taxonomies, and relevant ICD-10 diagnoses, offering a clear understanding of how this code fits into broader pain management and neurology practices. This summary serves as a resource for stakeholders seeking clarity on coding, coverage, and clinical application of interlaminar epidural injections with imaging guidance.
CPT Code Overview
CPT 62321 describes the injection of diagnostic or therapeutic substances, such as anesthetics, antispasmodics, opioids, steroids, or other solutions, into the cervical or thoracic region of the spine. This procedure is performed using imaging guidance, including fluoroscopy or CT, to ensure accurate placement of the needle or catheter. It is classified under Injection, Drainage, or Aspiration Procedures on the Spine and Spinal Cord. The typical site of service for this procedure is the Outpatient Hospital setting (POS 22).
Clinical & Coding Specifications
Clinical Context
A typical patient scenario involves an adult presenting to an outpatient hospital setting with persistent neck or upper back pain, often accompanied by radiculopathy or neuropathic symptoms. The patient may have a history of cervical or thoracic spondylosis, disc disorders, or postherpetic neuralgia. After conservative treatments such as physical therapy and oral medications have failed to provide adequate relief, the physician—often an anesthesiologist, pain medicine physician, or spinal cord injury medicine specialist—determines that an interlaminar epidural injection with imaging guidance is appropriate. The procedure is performed using fluoroscopy or CT to ensure accurate placement of the needle or catheter, and a therapeutic substance such as a steroid or anesthetic is injected to reduce inflammation and alleviate pain.
Coding Specifications
- Modifier
KX: Indicates that requirements specified in the medical policy have been met. Used when documentation supports medical necessity as defined by payors such as Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, BUCA, and Medicare.
| Modifier Code | Description | Typical Use |
|---|---|---|
KX | Requirements specified in the medical policy have been met | Used to confirm compliance with payor policy |
- Provider Taxonomies:
| Taxonomy Code | Specialty |
|---|---|
207L00000X | Anesthesiology |
208VP0000X | Pain Medicine Physician |
207XS0117X | Spinal Cord Injury Medicine Physician |
These specialties are typically responsible for performing and documenting the procedure described by CPT code 62321.
Related Diagnoses
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B02.23: Postherpetic polyneuropathy- Relevant for patients with neuropathic pain following herpes zoster infection, often treated with epidural injections for pain relief.
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B02.7: Disseminated zoster- Indicates widespread herpes zoster, which can cause severe neuropathic pain managed by epidural injections.
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B02.8: Zoster with other complications- Used when herpes zoster leads to complications such as radiculopathy or neuralgia, justifying the procedure.
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B02.9: Zoster without complications- For patients with uncomplicated herpes zoster experiencing pain that may benefit from epidural injection.
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G89.3: Neoplasm related pain (acute) (chronic)- For patients with pain due to neoplastic disease, where epidural injections are used for symptom management.
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M47.22: Other spondylosis with radiculopathy, cervical region- Indicates cervical spondylosis causing nerve root compression and pain, commonly treated with epidural injections.
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M47.23: Other spondylosis with radiculopathy, cervicothoracic region- For spondylosis affecting the cervicothoracic region with radiculopathy, relevant for cervical/thoracic epidural injections.
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M47.24: Other spondylosis with radiculopathy, thoracic region- Thoracic spondylosis with nerve involvement, justifying thoracic epidural injection.
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M47.25: Other spondylosis with radiculopathy, thoracolumbar region- Spondylosis at the thoracolumbar junction with radiculopathy, may be treated with epidural injections.
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M47.26: Other spondylosis with radiculopathy, lumbar region- Lumbar spondylosis with radiculopathy, relevant for lumbar epidural injections (see related CPT codes).
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M47.27: Other spondylosis with radiculopathy, lumbosacral region- Lumbosacral spondylosis with nerve root involvement, treated with lumbar epidural injections.
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M48.062: Spinal stenosis, lumbar region with neurogenic claudication- Lumbar spinal stenosis causing neurogenic claudication, often managed with lumbar epidural injections.
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M50.121: Cervical disc disorder at C4-C5 level with radiculopathy- Cervical disc herniation at C4-C5 causing radiculopathy, treated with cervical epidural injection.
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M50.122: Cervical disc disorder at C5-C6 level with radiculopathy- Cervical disc herniation at C5-C6 with radiculopathy, relevant for cervical epidural injection.
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M50.123: Cervical disc disorder at C6-C7 level with radiculopathy- Cervical disc herniation at C6-C7 with radiculopathy, treated with cervical epidural injection.
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M50.13: Cervical disc disorder with radiculopathy, cervicothoracic region- Disc disorder in the cervicothoracic region with radiculopathy, justifying cervical/thoracic epidural injection.
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M51.14: Intervertebral disc disorders with radiculopathy, thoracic region- Thoracic disc disorder with nerve root involvement, treated with thoracic epidural injection.
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M51.15: Intervertebral disc disorders with radiculopathy, thoracolumbar region- Disc disorder at thoracolumbar junction with radiculopathy, relevant for epidural injection.
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M51.16: Intervertebral disc disorders with radiculopathy, lumbar region- Lumbar disc disorder with radiculopathy, managed with lumbar epidural injection.
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M51.17: Intervertebral disc disorders with radiculopathy, lumbosacral region- Lumbosacral disc disorder with radiculopathy, treated with lumbar epidural injection.
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M54.12: Radiculopathy, cervical region- Cervical radiculopathy, commonly treated with cervical epidural injection.
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M54.13: Radiculopathy, cervicothoracic region- Radiculopathy in the cervicothoracic region, relevant for cervical/thoracic epidural injection.
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M54.14: Radiculopathy, thoracic region- Thoracic radiculopathy, managed with thoracic epidural injection.
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M54.15: Radiculopathy, thoracolumbar region- Radiculopathy at thoracolumbar junction, treated with epidural injection.
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M54.16: Radiculopathy, lumbar region- Lumbar radiculopathy, managed with lumbar epidural injection.
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M54.17: Radiculopathy, lumbosacral region- Lumbosacral radiculopathy, treated with lumbar epidural injection.
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M54.18: Radiculopathy, sacral and sacrococcygeal region- Sacral radiculopathy, relevant for sacral epidural injection (see related CPT codes).
Related CPT Codes
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62323: Injection(s), of diagnostic or therapeutic substance(s)... lumbar or sacral; with imaging guidance- Used for similar procedures in the lumbar or sacral regions. Alternative to
62321when the injection site is below the thoracic spine.
- Used for similar procedures in the lumbar or sacral regions. Alternative to
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64479: Injection(s), anesthetic agent(s) and/or steroid, transforaminal epidural, with imaging guidance; cervical or thoracic, single level- Used for transforaminal epidural injections at a single cervical or thoracic level. May be used as an alternative or in conjunction with
62321depending on the approach.
- Used for transforaminal epidural injections at a single cervical or thoracic level. May be used as an alternative or in conjunction with
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64480: Injection(s), anesthetic agent(s) and/or steroid, transforaminal epidural, with imaging guidance; cervical or thoracic, each additional level- Used for additional levels in transforaminal epidural injections in the cervical or thoracic region. Often paired with
64479.
- Used for additional levels in transforaminal epidural injections in the cervical or thoracic region. Often paired with
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64483: Injection(s), anesthetic agent(s) and/or steroid, transforaminal epidural, with imaging guidance; lumbar or sacral, single level- Used for transforaminal epidural injections at a single lumbar or sacral level. Alternative to
62323for transforaminal approach.
- Used for transforaminal epidural injections at a single lumbar or sacral level. Alternative to
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64484: Injection(s), anesthetic agent(s) and/or steroid, transforaminal epidural, with imaging guidance; lumbar or sacral, each additional level- Used for additional levels in transforaminal epidural injections in the lumbar or sacral region. Often paired with
64483.
- Used for additional levels in transforaminal epidural injections in the lumbar or sacral region. Often paired with
These codes are related by anatomical region and injection technique. They may be used as alternatives or in combination, depending on the clinical scenario and the number of levels treated.
National Reimbursement Benchmarks
Medicare's national mean rate for CPT code 62321 is $287.46, which is slightly higher than the BUCA (average commercial) mean rate of $273.32. Among commercial payers, UnitedHealth Group stands out with the highest mean rate at $374.64, while Aetna is the lowest at $237.47.
Rate dispersion, measured by the difference between the 75th and 25th percentiles, varies significantly across payers. Medicare exhibits the tightest range ($32.00), indicating more consistent reimbursement rates. In contrast, UnitedHealth Group has the widest range ($189.50), reflecting greater variability in commercial payments. Cigna and Blue Cross Blue Shield also show substantial dispersion, while Aetna and BUCA are more moderate.
The table and chart below present the full breakdown of national benchmarks for CPT code 62321 across major payers.
Trek Health ingests and normalizes Transparency in Coverage data and payer policy updates to give provider organizations a clear view of how commercial reimbursement behaves across markets, payers, and services. Our platform transforms raw payer disclosures into structured intelligence that supports contract evaluation, payer negotiations, and service line strategy. By combining market benchmarks with ongoing policy visibility, Trek helps teams identify variability, risk, and opportunity in commercial reimbursement. The result is faster insight, stronger negotiating positions, and more informed financial decisions.