Summary & Overview

CPT 0164T: Lumbar Total Disc Arthroplasty, Add-On Removal of Additional Disc

Headline: CPT code 0164T defines an add-on surgical procedure for removal of an additional lumbar artificial disc during the same operative session as primary lumbar total disc arthroplasty.

Lead: CPT code 0164T captures a specific intraoperative action — removal of another artificial lumbar disc at a separate interspace during the same surgery — and is relevant for surgical billing, hospital coding workflows, and payer adjudication for spine arthroplasty cases.

What the code represents and why it matters: CPT code 0164T documents an add-on spinal surgical service that occurs in the context of lumbar total disc arthroplasty. Accurate use of this add-on code affects clinical documentation, operative reporting, and claims submission for multi-level disc procedures. Given the complexity and cost of spinal implant procedures, correct coding has implications for provider reimbursement and claims processing across major payers.

Key payers covered: The analysis addresses national coverage and billing practices for Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare.

Overview of what readers will learn: Readers will find clinical context for when 0164T applies, typical sites of service, common billing modifiers and claims considerations, and how major payers approach adjudication and coverage nuances. The publication also summarizes benchmarking and policy considerations relevant to multi-level lumbar disc arthroplasty.

AetnaBlue Cross Blue ShieldCigna HealthUnitedHealthcareMedicare0164TCPTlumbar disc arthroplastyspine surgeryadd-on proceduresurgical billingambulatory surgeryhospital inpatient

Billing Code Overview

CPT code 0164T is an add-on procedure used when a provider removes an additional artificial disc in a separate lumbar interspace during the same operative session as an initial lumbar total disc arthroplasty. Total disc arthroplasty refers to replacing a lumbar intervertebral disc with an artificial disc to treat conditions such as degenerative disc disease or traumatic disc damage.

Service type: Surgical — spinal total disc arthroplasty (add-on removal of additional lumbar artificial disc during same session)

Typical site of service: Hospital inpatient or outpatient surgical facility, including ambulatory surgical centers, where lumbar spine arthroplasty procedures are performed.

Clinical & Coding Specifications

Clinical Context

A 52-year-old patient with chronic mechanical low back pain and radicular symptoms presents after failing conservative care including physical therapy, epidural steroid injections, and analgesic medications. Imaging (flexion-extension radiographs and MRI) shows multilevel lumbar degenerative disc disease with symptomatic disc collapse at L4-L5 and L5-S1. The spine surgeon schedules a lumbar total disc arthroplasty at L5-S1 with removal of a previously placed artificial disc at L4-L5 during the same anesthetic. In the operating room the team performs general endotracheal anesthesia, fluoroscopic localization, exposure of the anterior lumbar interspace, removal of the existing artificial disc at L4-L5, and implantation of a new total disc at L5-S1. Intraoperative steps include hemostasis, implant sizing and placement, and radiographic confirmation. Postoperatively the patient is monitored in the PACU, receives standardized pain control and DVT prophylaxis, and is discharged or admitted based on clinical status and facility protocols. Billing reflects the primary lumbar disc arthroplasty code for the initial interspace and the add-on code 0164T to report removal of another artificial disc in a different lumbar interspace performed at the same operative session.

Coding Specifications

Modifier	Description	When to Use
`22`	Increased procedural services	Use when work, time, or intensity substantially exceeds the typical service for the primary arthroplasty.

Taxonomy Code	Specialty	Notes
208600000X	Orthopaedic Surgery	Commonly performs lumbar total disc arthroplasty and removal of prior implants.
208500000X	Neurological Surgery	Performs complex spine arthroplasty, especially in multilevel or revision cases.
207X00000X	General Surgery - Spine-focused surgeons	Surgeons with spine focus using anterior approaches for disc procedures.

ICD-10 Code	Description	Clinical Relevance
`M51.36`	Other intervertebral disc degeneration, lumbar region	Common indication for lumbar disc arthroplasty when conservative care fails.
`M51.37`	Other intervertebral disc degeneration, lumbosacral region	Indicates degeneration at L5-S1 level often treated with arthroplasty.
`M51.26`	Other intervertebral disc displacement, lumbar region	Disc displacement causing radicular symptoms that may prompt arthroplasty or revision.
`M51.27`	Other intervertebral disc displacement, lumbosacral region	Displacement at the lumbosacral junction relevant to operative planning.
`M47.26`	Other spondylosis with radiculopathy, lumbar region	Spondylotic change with nerve root compression that may be addressed with disc replacement.

Related CPT Codes

CPT Code	Description	Relationship to This Procedure
`22856`	Total disc arthroplasty (artificial disc), lumbar, including discectomy to prepare interspace (single interspace, anterior approach)	Primary code for the initial lumbar disc replacement; `0164T` is an add-on for removal of another artificial disc in a second interspace at the same session.
`22858`	Total disc arthroplasty (artificial disc), lumbar, each additional interspace (list separately in addition to code for primary interspace)	Used when additional disc arthroplasty implantation is performed at another interspace; relates to multi-level arthroplasty alongside removal reported with `0164T`.
`20930`	Allograft, morselized, or placement of bone graft substitute, spine, posterior or lateral	May be used during revision or fusion adjuncts if grafting is required in the same or subsequent procedure.
`22612`	Arthrodesis, posterior or posterolateral technique, single level; lumbar	May be performed in staged or conversion procedures if disc arthroplasty is converted to fusion.
`22845`	Anterior instrumentation; 2 to 3 vertebral segments	May be used where additional anterior fixation is placed in conjunction with arthroplasty or revision.

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