CPT 22612Surgery

Arthrd pst tq 1ntrspc lumbar

CPT code 22612 covers spinal fusion surgery in the lower back (lumbar spine) using a posterior approach, specifically for one interspace. This involves fusing two vertebrae together to eliminate painful motion or correct instability.

Showing rates for

National Average

Base Medicare rate

$1,553.60

This calculator gives a typical-case estimate using standard Medicare modifier rules. Actual payment depends on payer policies, documentation, code-specific CMS status indicators, and locality. Verify before billing.

RVU breakdown

Work RVU

23.53

PE RVU (NF)

17.86

MP RVU

6.64

Total RVU

48.03

Conversion factor: 32.3465 · Source: CMS MPFS RVU25A · Confidence: High

NCCI bundling edits

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Billing tips

22612 is strictly an add-on code and cannot be billed alone - must be reported with primary arthrodesis code 22610 for first lumbar interspace
Impact: Automatic denial if billed without primary code; results in $1553.60 payment loss and claim reprocessing delays of 30-60 days
Report 22612 for each additional interspace beyond the first - for a 3-level lumbar fusion (L3-S1), bill 22610 x1 and 22612 x2
Impact: Proper sequencing ensures full reimbursement of $3107.20 for additional levels versus undercoding losses
Do not append modifier 51 to 22612 as it is designated as an add-on code (+) and is exempt from multiple procedure payment reduction
Impact: Incorrect modifier use may trigger payer edits causing payment delays or inappropriate reductions
Document each interspace level specifically (e.g., L3-L4, L4-L5, L5-S1) in operative report to support multiple units of 22612
Impact: Ambiguous documentation leads to downcoding from 2+ levels to 1 level, losing $1553.60+ per denied level
When instrumentation is used, separately report 22840 (posterior instrumentation) and 22842/22843/22844 for additional segments
Impact: Instrumentation codes add $1200-$2500+ to total case reimbursement; failure to report results in significant revenue loss
Verify medical necessity documentation includes failed conservative therapy (minimum 6 months), imaging confirming pathology, and clear clinical correlation
Impact: 30-40% of spinal fusion denials relate to medical necessity; proper documentation prevents $15,000+ total case denials

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Frequently asked questions

What is the difference between CPT 22610 and 22612?

CPT 22610 is the primary code for the first lumbar interspace arthrodesis, while 22612 is an add-on code for each additional lumbar interspace beyond the first. For a 2-level fusion, you would bill 22610 x1 and 22612 x1. For 3 levels, bill 22610 x1 and 22612 x2. The 2025 Medicare payment is $1553.60 for each 22612 add-on.

How much does Medicare pay for CPT 22612 in 2025?

Medicare pays $1553.60 for CPT 22612 based on the 2025 national average rate (both facility and non-facility). This represents 48.03 total RVUs multiplied by the 2025 conversion factor of 32.3465. Actual payment may vary based on geographic locality adjustments (GPCI).

Can CPT 22612 be billed alone?

No, CPT 22612 cannot be billed alone. It is an add-on code (designated with + symbol in CPT) that must always be reported with a primary arthrodesis code such as 22610. Billing 22612 without the primary code will result in automatic claim denial.

How many times can you bill CPT 22612 on the same claim?

You can bill CPT 22612 multiple times on the same claim based on the number of additional interspaces fused beyond the first. For example, a 4-level lumbar fusion (L2-S1) would be coded as 22610 x1 plus 22612 x3. Each unit must be supported by clear operative documentation identifying the specific levels treated.

What modifiers are needed for CPT 22612?

CPT 22612 typically does not require modifiers as it is an add-on code exempt from multiple procedure reductions (no modifier 51). Modifier 22 may be appropriate for unusually complex cases requiring significantly increased work. Modifier 62 applies when two surgeons work as co-surgeons. Modifier 59 is rarely needed but may be used to indicate distinct procedural services in specific unbundling scenarios.

Does CPT 22612 include instrumentation?

No, CPT 22612 covers only the arthrodesis (fusion) component and does not include spinal instrumentation. If posterior instrumentation is placed, separately report CPT 22840 for initial instrumentation and 22842, 22843, or 22844 for additional segments. These are distinct procedures with separate reimbursement.

What documentation is required to avoid denials for CPT 22612?

Essential documentation includes: operative report specifying each interspace level fused, description of posterior/posterolateral approach, bone graft placement details, evidence of failed conservative treatment (6+ months), pre-operative imaging confirming pathology at each level, and medical necessity linking symptoms to specific levels. Auditors scrutinize multi-level fusions heavily, so documentation must clearly justify each additional level billed with 22612.