🦴 CPT 22222 — Osteotomy of Spine, Including Discectomy, Anterior Approach, Single Vertebral Segment; Thoracic
Quick Reference
wRVU: 22.51 | Global Period: 090 | Assistant Payable: Yes | Bilateral Indicator: 0 Rule: CPT 22222 carries a 090-day global surgical package typical of major spine surgery. Because the thoracic spine is a midline, non-paired structure, laterality modifiers -RT/-LT do not apply, and bilateral indicator 0 means the 150% bilateral payment adjustment is not applicable. This code is the thoracic-level counterpart to 22220, sharing identical anterior osteotomy-with-discectomy technique but differing anatomic site and approach corridor.
📋 Clinical Description
CPT 22222 describes an osteotomy of a single thoracic vertebral segment performed via an anterior surgical approach, combined with removal of the intervertebral disc at that level. Because the thoracic spine sits behind the rib cage and mediastinal structures, the anterior corridor for this code typically requires a transthoracic, thoracotomy, or thoracoscopic-assisted approach rather than the direct anterior neck exposure used for the cervical sibling code, 22220. The surgeon mobilizes or resects a portion of rib as needed, retracts the lung and mediastinal contents, and directly visualizes the target vertebral level before performing the bony cut and disc excision as a combined single-level procedure.
The anterior thoracic approach is selected when the surgical goal requires direct decompression of the spinal cord from an anterior compressive lesion (such as a herniated thoracic disc or vertebral body deformity) in addition to correcting sagittal deformity, since posterior-only access frequently cannot safely address anterior cord compression at the thoracic level without excessive cord retraction. CPT 22222 is distinct from 22212, which reports a posterior/posterolateral thoracic osteotomy without the anterior disc access, and from 22224, which reports the identical anterior osteotomy-with-discectomy technique at the lumbar level rather than thoracic. When the operative note documents an anterior or transthoracic bony cut at a single thoracic level with concurrent disc removal, and no instrumented fusion is performed at the same session, 22222 stands alone as the primary procedure code.
This procedure may be performed in the following clinical contexts:
- Thoracic disc herniation with myelopathy — Anterior transthoracic osteotomy with discectomy directly decompresses the cord from a calcified or centrally herniated thoracic disc that cannot be safely accessed posteriorly.
- Fixed thoracic kyphotic deformity — Rigid kyphoscoliosis or post-traumatic thoracic kyphosis compressing the cord may require anterior column osteotomy to restore sagittal alignment.
- Vertebral body compression fracture with canal compromise — An anterior approach allows direct decompression and correction of a collapsed thoracic vertebral body impinging on the spinal cord.
- Revision surgery after failed posterior thoracic instrumentation — Anterior osteotomy is sometimes required to mobilize a segment that remains malaligned or symptomatic after a prior posterior-only procedure.
🔬 Anatomical & Procedural Considerations
| Variant | Mechanism | Key Notes |
|---|---|---|
| Single-level anterior thoracic osteotomy with discectomy (22222) | The surgeon performs a transthoracic or thoracoabdominal exposure, removes the disc at the target level, and cuts through the adjacent vertebral bone to mobilize or realign the segment, often requiring partial rib resection or thoracotomy for access. | This is the base code for a single thoracic level; it is not reported with 22226 for the same level, since 22226 is the universal “each additional segment” add-on shared across the cervical, thoracic, and lumbar family. |
| Posterior/posterolateral thoracic osteotomy (22212) | Performed from a dorsal approach, this technique removes posterior elements to release a kyphotic or ankylosed thoracic segment without direct anterior disc access. | Frequently used for three-column corrective procedures and often combined with instrumented posterior fusion, unlike the anterior technique reported by 22222. |
| Thoracoscopic-assisted anterior approach | A minimally invasive variant using video-assisted thoracoscopic technique to access the anterior thoracic spine with smaller incisions than open thoracotomy. | Whether performed open or thoracoscopically, the same CPT code 22222 applies, since CPT code selection here is based on the procedure performed, not exclusively the incision technique — though the approach should still be clearly documented for facility ICD-10-PCS coding. |
Clinical Pearl
Thoracic-level anterior osteotomy carries meaningfully higher surgical risk than the cervical equivalent due to proximity to the lung, great vessels, and thoracic duct, and operative notes for 22222 frequently document concurrent thoracic surgery involvement (partial rib resection, chest tube placement) that may support modifier -22 for increased procedural complexity when clearly documented as substantially beyond the typical case.
✅ Procedure Includes
- Anterior or transthoracic surgical exposure, including thoracotomy or thoracoscopic access and lung retraction as needed.
- Removal of the intervertebral disc at the target single thoracic level.
- Osteotomy (bony resection or cut) of the involved vertebral segment to achieve realignment or decompression.
- Direct visualization and protection of the spinal cord and adjacent neurovascular structures during the bony cut.
- Local hemostasis, chest tube placement when applicable, and closure of the anterior thoracic approach.
- Routine postoperative wound and chest care and follow-up visits within the 090-day global period.
❌ Excludes / Do Not Report Together
| Code | Description | Relationship |
|---|---|---|
| 22226 | Osteotomy of spine, including discectomy, anterior approach, single vertebral segment; each additional segment | This is the designated add-on code for 22222 and is reported only when a contiguous additional thoracic segment is osteotomized in the same session — it always requires a primary code (22220, 22222, or 22224) on the same claim. |
| 22220 | Osteotomy of spine, including discectomy, anterior approach, single vertebral segment; cervical | This is the anatomically distinct cervical-level equivalent of 22222 and should never be reported for a thoracic-level procedure regardless of clinical similarity. |
| 22224 | Osteotomy of spine, including discectomy, anterior approach, single vertebral segment; lumbar | This is the anatomically distinct lumbar-level equivalent of 22222 and should never be reported for a thoracic-level procedure. |
| 22212 | Osteotomy of spine, posterior or posterolateral approach, 1 vertebral segment; thoracic | This code reports the same anatomic level via a posterior approach without anterior disc access, and should not be used interchangeably with 22222 unless the operative note supports a genuinely posterior-only technique. |
Bundling Alert
Because 22222 carries a 090-day global period and frequently involves concurrent thoracic surgical access, any chest tube management, instrumented fusion, or additional-level procedure performed at the same operative session must be reported with the appropriate modifier (-51 or -59) to avoid improper bundling denials. Audit risk is elevated when claims show 22222 paired with unrelated general thoracic surgery CPT codes without clear operative-note support distinguishing the spine procedure from a separately reportable thoracic surgical service.
🌳 Code Tree — Surgery: Musculoskeletal System (Spine, Vertebral Column)
CPT 22206-22226 Osteotomy Procedures on the Spine (Vertebral Column)
│
├── 22206-22208 Osteotomy of spine, posterior/posterolateral approach, 3 columns
│ ├── 22206 Osteotomy of spine, posterior or posterolateral approach, three columns, one vertebral segment; thoracic (Global: 090)
│ └── 22207 Osteotomy of spine, posterior or posterolateral approach, three columns, one vertebral segment; lumbar (Global: 090)
│
├── 22210-22216 Osteotomy of spine, posterior/posterolateral approach, 1 vertebral segment
│ ├── 22210 Osteotomy of spine, posterior or posterolateral approach, 1 vertebral segment; cervical (Global: 090)
│ ├── 22212 Osteotomy of spine, posterior or posterolateral approach, 1 vertebral segment; thoracic (Global: 090)
│ └── 22214 Osteotomy of spine, posterior or posterolateral approach, 1 vertebral segment; lumbar (Global: 090)
│
├── 22220-22226 Osteotomy of spine, including discectomy, anterior approach, single vertebral segment
│ ├── 22220 Osteotomy of spine, including discectomy, anterior approach, single vertebral segment; cervical (Global: 090)
│ ├── ▶▶ 22222 ◀◀ Osteotomy of spine, including discectomy, anterior approach, single vertebral segment; thoracic ← YOU ARE HERE (Global: 090)
│ ├── 22224 Osteotomy of spine, including discectomy, anterior approach, single vertebral segment; lumbar (Global: 090)
│ └── 22226 Osteotomy of spine, including discectomy, anterior approach, single vertebral segment; each additional vertebral segment (Global: ZZZ, add-on)
│
└── Related arthrodesis codes referenced when fusion is performed at the same level
├── 22556 Arthrodesis, anterior interbody, including disc space preparation, discectomy, osteophytectomy and decompression of spinal cord and/or nerve roots; thoracic
└── 22585 Arthrodesis, anterior interbody, thoracic; each additional interspace (add-on)💰 RVU & Reimbursement Profile
| Component | Value |
|---|---|
| Work RVU | 22.51 |
| Global Period | 090 |
| Bilateral Indicator | 0 — bilateral payment adjustment does not apply |
| Assistant Surgeon | Yes, typically payable given the complexity of transthoracic exposure |
| Co‑Surgeon | May be payable with modifier -62 when a thoracic surgeon and spine surgeon each perform a distinct part of a combined transthoracic approach |
| Team Surgery | Not typically applicable to a single-level osteotomy, though may apply for complex combined anterior-posterior staged cases |
| PC/TC Split | 0 — global surgical procedure code, does not split into professional/technical components |
| Modifier -51 Exempt | No |
| Anesthesia | General anesthesia with single-lung ventilation is standard for transthoracic spine access |
Bilateral Billing Rules
🏷️ Modifier Reference
| Modifier | Name | When to Apply |
|---|---|---|
| -50 | Bilateral | Not applicable — the thoracic spine is a midline structure without paired laterality; do not append. |
| -22 | Increased Procedural Services | Apply when the operative note documents significantly increased complexity, time, or effort beyond the typical single-level anterior thoracic osteotomy, such as extensive adhesions from prior thoracic surgery, with supporting documentation attached. |
| -51 | Multiple Procedures | Apply when 22222 is reported with other significant, separately identifiable procedures at the same session, following standard multiple-procedure payment reduction rules. |
| -59 | Distinct Service | Apply when a separate procedure performed at a different anatomic site or session would otherwise appear bundled with 22222 under NCCI edits. |
| -58 | Staged | Apply when a planned, staged related procedure is performed during the 090-day global period, such as a second-stage posterior fusion following the anterior thoracic osteotomy. |
| -78 | Return to OR | Apply when the patient requires an unplanned return to the operating room for a complication related to the original 22222 procedure within the global period, such as a chest complication. |
| -79 | Unrelated Procedure | Apply when an unrelated procedure is performed during the 090-day global period, with documentation clearly establishing the new condition is unrelated to the original spine surgery. |
| -62 | Two Surgeons | Apply when two surgeons of different specialties (for example, thoracic surgery for the approach and spine surgery for the osteotomy) each perform a distinct portion of the combined procedure. |
| -80 | Assistant Surgeon | Apply when a qualified assistant surgeon actively participates throughout the transthoracic exposure and osteotomy, consistent with payer assistant-surgeon eligibility rules for this code. |
🩺 Common ICD‑10‑CM Pairings
Primary Diagnosis Group
| ICD‑10 | Description | HCC? | Notes |
|---|---|---|---|
| M47.14 | Spondylosis with myelopathy, thoracic region | Yes | Supports medical necessity when the osteotomy/discectomy is performed to decompress a myelopathic cord compression caused by spondylotic changes at the thoracic level. |
| M51.14 | Intervertebral disc disorders with radiculopathy, thoracic region | Yes | Reported when the operative note confirms a thoracic disc herniation with radicular or myelopathic findings as the surgical indication. |
| M51.24 | Other intervertebral disc displacement, thoracic region | No | Appropriate for a displaced thoracic disc without documented radiculopathy driving the surgical indication. |
| M48.03 | Spinal stenosis, thoracic region | No | Appropriate when canal narrowing at the thoracic level is the primary indication documented for surgery. |
| M43.04 | Spondylolysis, thoracic region | No | Supports necessity when a structural pars defect at the thoracic level requires anterior correction. |
Secondary Group
| ICD‑10 | Description | HCC? | Notes |
|---|---|---|---|
| M40.04 | Postural kyphosis, thoracic region | No | Reported when a fixed thoracic kyphotic deformity is the driving indication for the corrective osteotomy. |
| Q76.49 | Other congenital malformation of spine, not associated with scoliosis | No | Reported when a congenital anomaly of the thoracic spine contributes to the surgical indication. |
Etiology / Complication
| ICD‑10 | Description | HCC? | Notes |
|---|---|---|---|
| G95.20 | Unspecified cord compression | No | Reported when the operative and pre-op imaging documentation establishes cord compression without a more specific etiologic code available. |
| M96.1 | Postlaminectomy syndrome, not elsewhere classified | No | Reported when the current procedure addresses a complication of a prior spinal surgery. |
Coding Specificity Reminder
Always confirm the exact thoracic level documented in the operative note matches the level-specific ICD-10-CM code selected where level-specific options exist, since generic unspecified thoracic disc/spondylosis codes without myelopathy or radiculopathy specificity may not fully support medical necessity for a procedure as complex and high-risk as 22222. Payer LCDs typically require objective cross-sectional imaging (MRI or CT myelogram) correlating anterior cord compression with the clinical presentation before this procedure is considered medically necessary, given the availability of less invasive posterior alternatives for many thoracic pathologies.
🏥 MS‑DRG Considerations
CPT 22222 is a facility-reportable surgical procedure that, in the inpatient setting, is translated to its ICD-10-PCS equivalent(s) for MS-DRG grouping rather than reported directly as a CPT code on the UB-04. When the procedure includes only osteotomy and discectomy without instrumented fusion, the encounter typically groups to the “Other Musculoskeletal System and Connective Tissue O.R. Procedures” DRG family (515/516/517, differentiated by MCC/CC capture); when performed concurrently with thoracic arthrodesis, the encounter more commonly groups to MS-DRG 456-458 (Spinal Fusion Except Cervical with Spinal Curvature/Malignancy/Infection or 9+ Fusions) or 460-462 (Spinal Fusion Except Cervical), depending on the number of levels fused and MCC/CC capture.
There is no national NCD specifically dedicated to CPT 22222; coverage and medical-necessity criteria are governed at the local level through Local Coverage Determinations (LCDs) issued by the applicable Medicare Administrative Contractor addressing spinal surgery, thoracic decompression, and spinal deformity correction. Given the transthoracic access required for this code, some MACs’ LCDs also cross-reference general thoracic surgery coverage criteria.
🔧 ICD‑10‑PCS Equivalents
| PCS Code | Full Description | Modality |
|---|---|---|
| 0P840ZZ | Division of Thoracic Vertebra, Open Approach | Open surgical osteotomy |
| 0P844ZZ | Division of Thoracic Vertebra, Percutaneous Endoscopic Approach | Thoracoscopic-assisted osteotomy approach |
| 0RB90ZZ | Excision of Thoracic Vertebral Disc, Open Approach | Open discectomy component |
| 0RB94ZZ | Excision of Thoracic Vertebral Disc, Percutaneous Endoscopic Approach | Thoracoscopic-assisted discectomy component |
PCS Character Analysis
| Position | Character | Value | Definition |
|---|---|---|---|
| 1 | Section | 0 | Medical and Surgical section, the primary PCS section for procedures involving cutting, excision, or repair of body structures. |
| 2 | Body System | P | Upper Bones body system, which includes the thoracic vertebrae as distinct from the Upper Joints system used for disc-level codes. |
| 3 | Root Operation | 8 | Division — cutting into a body part without draining fluids or gases, used specifically to capture the osteotomy component of this procedure. |
| 4 | Body Part | 4 | Thoracic Vertebra, the specific body part value corresponding to the single-segment target level. |
| 5 | Approach | 0 | Open — direct transthoracic surgical exposure, the standard approach documented for this code; value 4 (Percutaneous Endoscopic) applies for thoracoscopic-assisted technique. |
| 6 | Device | Z | No Device — the osteotomy itself does not involve implantation of hardware; any concurrent instrumentation would be captured with a separate PCS code. |
| 7 | Qualifier | Z | No Qualifier — no additional qualifying detail applies to this root operation and body part combination. |
Root Operation Comparison
- The osteotomy component of 22222 maps to root operation Division (8) because the bony cut itself does not remove tissue, whereas the discectomy component maps separately to root operation Excision (B) because disc material is physically removed from the body.
- Thoracic-level disc excision uses body part value 9 (Thoracic Vertebral Disc) in the Upper Joints body system, distinct from the cervical body part values used for 22220.
- If instrumented fusion is also performed at the same level, a third PCS code using root operation Fusion (G) in the Upper Joints body system would be required in addition to the Division and Excision codes above.
📝 Coding Examples
Example 1
Clinical Scenario: A 61-year-old presents with progressive lower extremity weakness and bowel/bladder dysfunction. MRI demonstrates a large calcified central disc herniation at T8-T9 causing severe anterior cord compression. The surgeon performs a right-sided thoracotomy, removes the T8-T9 disc, and performs an osteotomy of the adjacent T8 vertebral body to achieve adequate cord decompression, without instrumented fusion at this session.
| Field | Code | Rationale |
|---|---|---|
| CPT | 22222 | Single-level anterior (transthoracic) osteotomy with discectomy performed for calcified disc removal and cord decompression, matching the documented technique exactly. |
| PDx | M51.14 | Thoracic intervertebral disc disorder with radiculopathy/myelopathy directly supporting medical necessity for the anterior surgical approach given failure of conservative management. |
Note
Confirm the operative note documents the transthoracic approach and the bony osteotomy component specifically, since a straightforward thoracic discectomy without an osteotomy would instead be reported with a different, lower-complexity code.
Example 2
Clinical Scenario: A patient with severe post-traumatic thoracic kyphosis has a rigidly malaligned T6-T7-T8 segment causing progressive myelopathy. The surgeon performs an anterior transthoracic osteotomy and discectomy at T6-T7, then continues the osteotomy through the contiguous T7-T8 segment in the same session.
| Field | Code | Rationale |
|---|---|---|
| CPT 1 | 22222 | Primary single-segment anterior thoracic osteotomy with discectomy at the first level, T6-T7. |
| CPT 2 | 22226 | Add-on code correctly appended for the contiguous additional segment, T7-T8, osteotomized in the same session. |
| PDx | M40.04 | Postural/fixed kyphosis of the thoracic region supports the deformity-correction indication for the multilevel osteotomy. |
Warning
Example 3
Clinical Scenario: Four weeks after an anterior transthoracic osteotomy with discectomy at T8-T9 (originally reported with 22222), the same patient develops a delayed hemothorax requiring urgent return to the operating room for evacuation and hemostasis.
| Field | Code | Rationale |
|---|---|---|
| CPT | 22222--78 | The unplanned return to the OR for a complication of the original transthoracic procedure, occurring within the 090-day global period, requires modifier -78 rather than a new stand-alone procedure code. |
| PDx | M96.1 | Postlaminectomy/postsurgical spine syndrome code appropriately captures the complication of the prior spinal procedure. |
Global period reminder, if applicable
⚠️ Common Coding Pitfalls
- Pitfall 1: Reporting 22222 when the operative note only documents a thoracic discectomy without a described bony osteotomy technique — this overstates procedural complexity and should instead be coded to a discectomy-only or corpectomy code depending on the documented technique.
- Pitfall 2: Confusing 22222 (thoracic) with 22220 (cervical) or 22224 (lumbar) — always verify the specific vertebral region documented in the operative note before code selection, since these share identical technique descriptions but are anatomically distinct.
- Pitfall 3: Failing to append add-on code 22226 when a contiguous additional thoracic segment is osteotomized in the same session, resulting in underreporting of the procedure performed.
- Pitfall 4: Applying modifier -50 to a thoracic spine procedure — the thoracic spine is a midline, non-paired structure, and bilateral modifiers do not apply regardless of which side the thoracotomy approach is made from.
- Pitfall 5: Failing to separately report significant, distinct general thoracic surgery services (such as chest tube management for an unrelated pulmonary complication) with modifier -59, or conversely, inappropriately unbundling routine thoracotomy closure that is already included in the global package of 22222.
- Pitfall 6: Using an unspecified or non-level-specific thoracic disc/spondylosis diagnosis code when a level-specific and severity-specific code (radiculopathy versus myelopathy) is available and clinically documented, which weakens medical-necessity support under most payer LCDs given the higher surgical risk profile of the transthoracic approach compared to posterior alternatives.
📎 Sources
1. American Medical Association. CPT® 2026 Professional Edition. Chicago, IL: AMA Press; 2026. 2. Centers for Medicare & Medicaid Services. CY 2026 Medicare Physician Fee Schedule Final Rule. Federal Register; 2025. 3. Centers for Medicare & Medicaid Services. ICD-10-PCS 2026 Reference Manual and Code Tables. 4. Centers for Medicare & Medicaid Services. Physician Fee Schedule Look-Up Tool (verify current wRVU/global indicators directly, as of coding date).
Sources listed above correspond to superscript citations throughout this note. Verify all Medicare payment figures against your current CMS PFS Lookup tool and applicable MAC LCD prior to claim submission. Please use the latest AAPC/AHIMA Coding Books to verify each code within this note.