🦴 CPT 22220 — Osteotomy of Spine, Including Discectomy, Anterior Approach, Single Vertebral Segment; Cervical
Quick Reference
wRVU: 22.37 | Global Period: 090 | Assistant Payable: Yes | Bilateral Indicator: 0 Rule: CPT 22220 carries a 090-day global surgical package typical of major spine surgery — all related E/M, wound checks, and typical postoperative care within 90 days are bundled into the global fee. Because the cervical 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 to this code.
📋 Clinical Description
CPT 22220 describes an osteotomy of a single cervical vertebral segment performed via an anterior surgical approach, combined with removal of the intervertebral disc at that level. The surgeon accesses the cervical spine through a transverse or oblique anterior neck incision, retracts the great vessels and visceral structures medially, and directly visualizes the target vertebral level before performing the bony cut (osteotomy) and disc excision (discectomy) as a combined single-level procedure. This code differs from its posterior-approach sibling 22210, which addresses osteotomy without the anterior corridor’s disc access, and from 22222, which reports the identical anterior osteotomy-with-discectomy technique at the thoracic level rather than cervical.
The anterior approach is favored when the surgical goal requires direct decompression of the spinal cord or exiting nerve roots in addition to correcting sagittal or coronal deformity, since the disc space and posterior vertebral body margin are only accessible from the front. CPT 22220 is distinct from 22551, which reports an anterior cervical discectomy performed for decompression alone without an osteotomy component, and from 22600, which reports posterior arthrodesis rather than an osteotomy procedure. When the operative note documents cutting through bone at a single cervical level from an anterior exposure with concurrent disc removal, and no instrumented fusion is performed at the same session, 22220 stands alone as the primary procedure code.
This procedure may be performed in the following clinical contexts:
- Cervical spondylotic myelopathy with fixed kyphotic deformity — Anterior osteotomy with discectomy is used to correct rigid cervical kyphosis compressing the spinal cord, restoring lordotic or neutral alignment while simultaneously decompressing the canal.
- Ankylosed cervical spine from prior fusion or inflammatory arthritis — When a segment has become rigidly fused in a non-functional position, an anterior osteotomy releases the ankylosis and allows realignment.
- Post-traumatic cervical malunion — A healed fracture with unacceptable angulation may require anterior osteotomy and discectomy to re-establish sagittal balance and relieve neural impingement.
- Revision surgery for failed prior cervical procedures — Anterior osteotomy is sometimes required to mobilize a previously fused or malaligned segment before revision instrumentation can be placed.
🔬 Anatomical & Procedural Considerations
| Variant | Mechanism | Key Notes |
|---|---|---|
| Single-level anterior cervical osteotomy with discectomy (22220) | The surgeon performs an anterior cervical exposure, removes the disc at the target level, and cuts through the adjacent vertebral bone to mobilize or realign the segment. The technique typically uses a high-speed burr and osteotomes under direct or microscopic visualization to protect the spinal cord and vertebral arteries during the bony cut. | This is the base code for a single cervical level; it is not reported with 22226 for the same level, since 22226 is the “each additional segment” add-on used only when a contiguous adjacent level is also osteotomized in the same session. |
| Posterior/posterolateral cervical osteotomy (22210) | Performed from a dorsal approach, this technique removes posterior elements (lamina, facets) to release a kyphotic or ankylosed segment without direct anterior disc access. | Frequently used for three-column corrective procedures in ankylosing spondylitis, often combined with instrumented posterior fusion in the same operative session, unlike the anterior technique reported by 22220. |
| Combined anterior-posterior single-level correction | Some rigid deformities require both an anterior osteotomy/discectomy (22220) and a posterior osteotomy or fusion at the same level during a staged or same-day combined approach. | When both approaches are performed at the same session, each is reported separately with appropriate modifiers, and documentation must clearly delineate the anterior versus posterior components to support both code assignments. |
Clinical Pearl
The single most important documentation element for 22220 is confirmation that the surgeon performed an actual bony cut (osteotomy) through the vertebral body or uncovertebral joint — not simply a routine discectomy. If the operative note only describes disc removal without a described osteotomy technique, the correct code is 22551 (anterior cervical discectomy) rather than 22220, and downcoding to avoid an audit flag for overstatement of procedural complexity is essential.
✅ Procedure Includes
- Anterior cervical surgical exposure, including retraction of the carotid sheath, trachea, and esophagus.
- Removal of the intervertebral disc at the target single cervical level.
- Osteotomy (bony resection or cut) of the involved vertebral segment to achieve realignment or decompression.
- Direct or microscopic visualization and protection of the spinal cord, nerve roots, and vertebral arteries during the bony cut.
- Local hemostasis and closure of the anterior cervical approach.
- Routine postoperative wound 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 22220 and is reported only when a contiguous additional cervical segment is osteotomized in the same session — it is never billed as a stand-alone code and always requires 22220 as the primary procedure. |
| 22222 | Osteotomy of spine, including discectomy, anterior approach, single vertebral segment; thoracic | This is the anatomically distinct thoracic-level equivalent of 22220 and should never be reported for a cervical-level procedure regardless of clinical similarity. |
| 22551 | Arthrodesis, anterior interbody, including disc space preparation, discectomy, osteophytectomy and decompression of spinal cord and/or nerve roots; cervical below C2 | This code reports decompression and fusion without a described osteotomy and should not be used interchangeably with 22220 unless the operative note supports the fusion component in addition to the osteotomy. |
| 63075 | Discectomy, anterior, with decompression of spinal cord and/or nerve root(s), including osteophytectomy; cervical, single interspace | This code reports decompressive discectomy without an osteotomy component and represents a lower level of procedural complexity than 22220; reporting both for the same single level and same session is not supported. |
Bundling Alert
Because 22220 carries a 090-day global period, any instrumented fusion, arthrodesis, 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, and any unrelated procedure performed during the 90-day postoperative window requires modifier -79 with clear documentation that the second procedure addresses a distinct condition. Audit risk is elevated when claims show 22220 paired with 22551 at the identical vertebral level without clear operative-note support for both a discrete osteotomy and a separate arthrodesis, since payers frequently flag this combination for medical-necessity review.
🌳 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
│ ├── 22218 Osteotomy of spine, including discectomy, posterior approach, single vertebral segment; each additional vertebral segment (Global: ZZZ, add-on)
│ ├── ▶▶ 22220 ◀◀ Osteotomy of spine, including discectomy, anterior approach, single vertebral segment; cervical ← YOU ARE HERE (Global: 090)
│ ├── 22222 Osteotomy of spine, including discectomy, anterior approach, single vertebral segment; thoracic (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
├── 22551 Arthrodesis, anterior interbody, cervical below C2, including discectomy and decompression
└── 22552 Arthrodesis, anterior interbody, cervical below C2; each additional interspace (add-on)💰 RVU & Reimbursement Profile
| Component | Value |
|---|---|
| Work RVU | 22.37 |
| Global Period | 090 |
| Bilateral Indicator | 0 — bilateral payment adjustment does not apply |
| Assistant Surgeon | Yes, typically payable given the complexity of anterior cervical exposure |
| Co‑Surgeon | May be payable with modifier -62 when two surgeons of different specialties each perform a distinct part of the procedure |
| Team Surgery | Not typically applicable to a single-level osteotomy |
| PC/TC Split | 0 — global surgical procedure code, does not split into professional/technical components |
| Modifier -51 Exempt | No |
| Anesthesia | General anesthesia is standard for anterior cervical spine access |
Bilateral Billing Rules
The cervical spine is a single midline structure, so 22220 does not carry a meaningful bilateral concept and modifier -50 would not apply in the traditional paired-organ sense. Any reference to “bilateral” in a cervical spine operative note typically describes bilateral decompression technique within a single-level procedure rather than two separate anatomic sides, and should not trigger a -50 modifier appendage.
🏷️ Modifier Reference
| Modifier | Name | When to Apply |
|---|---|---|
| -50 | Bilateral | Not applicable — the cervical 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 osteotomy, such as severe ankylosis or dense scar tissue from a prior surgery, with supporting documentation attached. |
| -51 | Multiple Procedures | Apply when 22220 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 22220 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 osteotomy. |
| -78 | Return to OR | Apply when the patient requires an unplanned return to the operating room for a complication related to the original 22220 procedure within the global period. |
| -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, neurosurgery and orthopedic spine) each perform a distinct portion of the combined osteotomy/discectomy procedure. |
| -80 | Assistant Surgeon | Apply when a qualified assistant surgeon actively participates throughout the anterior cervical 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 |
|---|---|---|---|
| M47.12 | Other spondylosis with myelopathy, cervical region | ✔️ Yes | Supports medical necessity when the osteotomy/discectomy is performed to decompress a myelopathic cord compression caused by spondylotic changes. |
| M50.021 | Cervical disc disorder at C4-C5 level with myelopathy | ✔️ Yes | Level-specific code that should match the operative level documented for the single-segment osteotomy. |
| M50.022 | Cervical disc disorder at C5-C6 level with myelopathy | ✔️ Yes | Use when the operative note confirms this specific disc level as the target of the procedure. |
| M48.02 | Spinal stenosis, cervical region | ❌ No | Appropriate when canal narrowing at the cervical level is the primary indication documented for surgery. |
| M43.02 | Spondylolysis, cervical region | ❌ No | Supports necessity when a structural pars defect at the cervical level requires anterior correction. |
Secondary Group
| ICD‑10 | Description | HCC? | Notes |
|---|---|---|---|
| M40.02 | Postural kyphosis, cervical region | ❌ No | Reported when a fixed cervical 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 cervical 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 cervical level (for example, C4-C5 versus C5-C6) documented in the operative note matches the level-specific ICD-10-CM code selected, since generic or unspecified cervical disc/spondylosis codes without myelopathy or level specificity may not support medical necessity for a procedure as complex as 22220. Payer LCDs frequently require objective imaging correlation (MRI or CT documenting cord compression or instability) alongside clinical symptoms before this procedure is considered medically necessary.
🏥 MS‑DRG Considerations
CPT 22220 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 anterior cervical arthrodesis, the encounter more commonly groups to the Cervical Spinal Fusion DRG family (473/474/475 or 519/520/521 depending on payer-specific grouper version and concurrent device use). There is no national NCD specifically dedicated to CPT 22220; 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, cervical decompression, and spinal deformity correction — since your payer mix spans Medicare, Wisconsin Medicaid, BCBS of WI, UMR, UHC, Cigna, and Aetna, confirm the specific LCD in effect for your MAC jurisdiction (for Wisconsin, this is typically Noridian) before finalizing medical-necessity documentation, and cross-reference against the CMS PFS Lookup tool for the current facility/non-facility payment indicators tied to this code.
🔧 ICD‑10‑PCS Equivalents
| PCS Code | Full Description | Modality |
|---|---|---|
| 0P830ZZ | Division of Cervical Vertebra, Open Approach | Open surgical osteotomy |
| 0P834ZZ | Division of Cervical Vertebra, Percutaneous Endoscopic Approach | Minimally invasive osteotomy approach |
| 0RB10ZZ | Excision of Cervical Vertebral Disc, Open Approach | Open discectomy component |
| 0RB14ZZ | Excision of Cervical Vertebral Disc, Percutaneous Endoscopic Approach | Minimally invasive 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 cervical 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 | 3 | Cervical Vertebra, the specific body part value corresponding to the single-segment target level. |
| 5 | Approach | 0 | Open — direct anterior surgical exposure, the standard approach documented for this code. |
| 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 22220 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.
- This two-root-operation mapping means a single CPT code like 22220 frequently requires two distinct ICD-10-PCS codes to fully capture the inpatient facility procedure, unlike simpler CPT codes that map to a single PCS code.
- 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 58-year-old presents with progressive gait instability and hand clumsiness. MRI demonstrates severe cord compression at C5-C6 from a fixed kyphotic deformity following remote trauma. The surgeon performs an anterior approach, removes the C5-C6 disc, and performs an osteotomy of the C5 vertebral body to correct the kyphotic angulation and decompress the cord, without instrumented fusion at this session.
| Field | Code | Rationale |
|---|---|---|
| CPT | 22220 | Single-level anterior cervical osteotomy with discectomy performed for deformity correction and cord decompression, matching the documented technique exactly. |
| PDx | M50.022 | Level-specific cervical disc disorder with myelopathy at C5-C6, directly supporting medical necessity for the procedure performed. |
Note
Example 2
Clinical Scenario: A patient with ankylosing spondylitis has a rigidly fused, malaligned C4-C5-C6 segment causing severe chin-on-chest deformity. The surgeon performs an anterior osteotomy and discectomy at C4-C5, then continues the osteotomy through the contiguous C5-C6 segment in the same session.
| Field | Code | Rationale |
|---|---|---|
| CPT 1 | 22220 | Primary single-segment anterior osteotomy with discectomy at the first level, C4-C5. |
| CPT 2 | 22226 | Add-on code correctly appended for the contiguous additional segment, C5-C6, osteotomized in the same session. |
| PDx | M40.02 | Postural/fixed kyphosis of the cervical region supports the deformity-correction indication for the multilevel osteotomy. |
Warning
Example 3
Clinical Scenario: Six weeks after an anterior cervical osteotomy with discectomy at C5-C6 (originally reported with 22220), the same patient returns with acute wound dehiscence requiring urgent surgical exploration and closure in the operating room.
| Field | Code | Rationale |
|---|---|---|
| CPT | 22220--78 | The unplanned return to the OR for a complication of the original 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 22220 when the operative note only documents a discectomy without a described bony osteotomy technique — this overstates procedural complexity and should instead be coded as 22551 or 63075 depending on whether fusion was performed.
- Pitfall 2: Confusing 22220 (cervical) with 22222 (thoracic) — always verify the specific vertebral region documented in the operative note before code selection, since these are anatomically distinct despite identical procedural technique.
- Pitfall 3: Failing to append add-on code 22226 when a contiguous additional cervical segment is osteotomized in the same session, resulting in underreporting of the procedure performed.
- Pitfall 4: Applying modifier -50 to a cervical spine procedure — the cervical spine is a midline, non-paired structure, and bilateral modifiers do not apply regardless of bilateral decompression technique described in the note.
- Pitfall 5: Omitting modifier -59 or -51 when 22220 is reported alongside a separately identifiable arthrodesis procedure at the same session, which can trigger inappropriate NCCI bundling denials.
- Pitfall 6: Using an unspecified or non-level-specific cervical disc/spondylosis diagnosis code when a level-specific code is available and clinically documented, which weakens medical-necessity support under most payer LCDs for a major spine procedure of this complexity.
📎 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.