🧠 CPT 61512 — Craniectomy, Trephination, Bone Flap Craniotomy; For Excision Of Meningioma, Supratentorial
Quick Reference
wRVU: 36.21 | Global Period: 090 | Assistant Payable: Yes | Bilateral Indicator: 0 Rule: CPT 61512 carries the 090-day major surgical global package, so all E/M, imaging follow-up, and wound care tied to the meningioma resection are bundled for 90 days unless modifier -24 or -79 documentation supports an unrelated service. Assistant surgeon billing is common given the complexity of dural dissection near venous sinuses. This code is dedicated exclusively to meningioma histology; any other supratentorial tumor type reverts to sibling code 61510.
📋 Clinical Description
CPT 61512 describes an open craniectomy or craniotomy performed to remove a meningioma arising from the dura mater above the tentorium cerebelli — the fibrous membrane separating the cerebrum from the cerebellum. The surgeon incises the scalp, elevates a bone flap, opens the dura, and dissects the tumor free from adjacent cortex, vasculature, and venous sinuses before replacing and securing the bone flap. Unlike 61510, which is used for any other supratentorial brain tumor, 61512 is histology-specific to meningioma and should never be reported when the pathology returns glioma, metastasis, or another non-meningeal diagnosis.
Meningiomas are typically slow-growing and benign, but their location relative to the sagittal sinus, motor cortex, or optic apparatus can make resection technically demanding, often justifying modifier -22 when operative time and complexity substantially exceed the typical case. Where the operative note also documents excision of a supratentorial cyst rather than solid tumor, 61516 applies instead, and where the pathology is an abscess, 61514 applies. Correct code selection hinges entirely on the final pathology report, not just the pre-operative differential.
This procedure may be performed in the following clinical contexts:
- Elective resection of a symptomatic convexity or parasagittal meningioma causing seizures, headache, or focal neurologic deficit from mass effect.
- Resection of an incidentally discovered meningioma that has demonstrated interval growth on serial MRI surveillance.
- Debulking or gross-total resection of a meningioma abutting the superior sagittal sinus, requiring microsurgical dissection to preserve venous drainage.
- Re-do craniotomy for recurrent meningioma following prior subtotal resection, often staged with radiosurgery.
🔬 Anatomical & Procedural Considerations
| Variant | Mechanism | Key Notes |
|---|---|---|
| Convexity meningioma resection | Bone flap is centered directly over the tumor; dura is opened in a curvilinear fashion and the tumor is circumferentially dissected from the arachnoid plane. | Generally the most straightforward variant; gross total resection (Simpson Grade I) is often achievable with low recurrence risk. |
| Parasagittal/falcine meningioma resection | Requires careful preservation of bridging veins draining into the superior sagittal sinus; the surgeon may need to sacrifice a segment of dura and reconstruct it with a graft. | Higher risk of venous infarct or sinus injury; stereotactic navigation (61781) and the operating microscope (69990) are frequently used and separately reportable. |
| Skull base or sphenoid wing meningioma resection | May involve bony hyperostosis requiring drilling of the sphenoid ridge in addition to soft tissue excision. | If the approach extends to true skull base exposure, coders should confirm whether a skull base code (61590s) supersedes 61512 rather than being reported in addition to it. |
Clinical Pearl
The single most important documentation element for correct code assignment is the final pathology report, not the surgeon’s pre-operative working diagnosis. A pre-op note reading “brain tumor” that returns as meningioma on final pathology should still be coded 61512, not 61510 — hold the claim until pathology finalizes if the op note is ambiguous.
✅ Procedure Includes
- Scalp incision, elevation of the myocutaneous flap, and hemostasis of the galea and pericranium.
- Craniotomy or craniectomy with elevation of the bone flap and exposure of the dura overlying the tumor.
- Durotomy and microsurgical circumferential dissection of the meningioma from adjacent cortex and vasculature.
- Hemostasis of the tumor bed, including management of dural venous sinus bleeding where encountered.
- Dural closure or dural graft placement when primary closure is not feasible.
- Replacement and rigid fixation of the bone flap with plates or sutures, followed by layered scalp closure.
❌ Excludes / Do Not Report Together
| Code | Description | Relationship |
|---|---|---|
| 61510 | Craniectomy/craniotomy for excision of supratentorial brain tumor, except meningioma | Mutually exclusive by histology — use 61510 whenever final pathology is not meningioma; the two are never reported together for the same lesion. |
| 61514 | Craniectomy/craniotomy for excision of supratentorial brain abscess | Different pathology entirely; if pathology returns infectious/inflammatory tissue rather than tumor, 61514 applies instead of 61512. |
| 61516 | Craniectomy/craniotomy for excision or fenestration of a supratentorial cyst | Applies when the lesion is cystic rather than solid tumor; confirm operative and pathology documentation before selecting between these codes. |
| 61519 | Craniectomy for excision of infratentorial or posterior fossa meningioma | Anatomic distinction only — 61519 is used when the meningioma sits below the tentorium rather than above it; verify tumor location on imaging and op note. |
Bundling Alert
CPT 61512 carries a 090-day global period, so any related E/M visits, dressing changes, or staged imaging within that window are bundled into the global fee and are not separately billable unless modifier -24 (unrelated E/M) or -79 (unrelated procedure) is clearly supported by documentation. Watch for NCCI edits bundling +69990 into 61512 unless the microscope was used for a genuinely separate, listed procedure, and confirm +61781 stereotactic navigation is reported only once per operative session even if multiple lesions are addressed. Audit risk rises when modifier -22 is appended without an operative note explicitly quantifying the added time, blood loss, or technical difficulty that justified it.
🌳 Code Tree — Surgery: Surgical Procedures on the Skull, Meninges, and Brain
CPT 61304-61576 Surgical Procedures on the Skull, Meninges, and Brain
│
├── 61304-61321 Craniectomy or Craniotomy, Exploratory; Trephine or Burr Hole(s)
│ ├── 61304 Craniectomy or craniotomy, exploratory; supratentorial
│ └── 61305 Craniectomy or craniotomy, exploratory; infratentorial
│
├── 61510-61521 Craniectomy, Trephination, Bone Flap Craniotomy (Tumor Excision)
│ ├── D32.0 Craniectomy, trephination, bone flap craniotomy; for excision of brain tumor, supratentorial, except meningioma (Global: 090)
│ ├── D42.0 Craniectomy, trephination, bone flap craniotomy; for excision of meningioma, supratentorial (Global: 090)
│ ├── 61510 Excision of brain tumor, supratentorial, except meningioma (Global: 090)
│ ├── ▶▶ 61512 ◀◀ Excision of meningioma, supratentorial ← YOU ARE HERE (Global: 090)
│ ├── 61514 Excision of brain abscess, supratentorial (Global: 090)
│ └── 61516 Excision or fenestration of cyst, supratentorial (Global: 090)
│
├── 61517 Implantation of brain intracavitary chemotherapy agent (List separately in addition to code for primary procedure)
│
└── 61518-61526 Craniectomy for Excision of Brain Tumor, Infratentorial or Posterior Fossa
├── 61518 Except meningioma, cerebellopontine angle tumor, or midline tumor at base of skull
└── 61519 Meningioma💰 RVU & Reimbursement Profile
| Component | Value |
|---|---|
| Work RVU | 36.21 (facility, national unadjusted, CMS PFS 2026 — verify against current locality GPCI in the PFS Look-Up Tool) |
| Global Period | 090 — major surgery, 1-day pre-op and 90-day post-op included |
| Bilateral Indicator | 0 — bilateral payment adjustment does not apply; procedure is not typically bilateral |
| Assistant Surgeon | Payable — commonly used given dural/vascular complexity |
| Co‑Surgeon | Payable with -62 when two surgeons of different specialties (e.g., neurosurgery and ENT for combined skull base access) each perform a distinct part |
| Team Surgery | Not typically applicable |
| PC/TC Split | Indicator 0 — concept does not apply; this is a physician surgical service, not split into professional/technical components |
| Modifier -51 Exempt | No — subject to multiple procedure payment reduction when billed with other same-session procedures |
| Anesthesia | General anesthesia; base units correspond to CPT 00212–00218 series depending on positioning |
Bilateral Billing Rules
Craniotomy procedures are not paired for bilateral payment adjustment, so modifier -50 is not appropriate for 61512. Laterality (-RT/-LT) may still be documented for anatomic tracking and HCC/quality reporting purposes even though it does not change facility reimbursement.
🏷️ Modifier Reference
| Modifier | Name | When to Apply |
|---|---|---|
| -RT | Right Side | Append when the craniotomy is performed on the right cerebral hemisphere for anatomic documentation purposes. |
| -LT | Left Side | Append when the craniotomy is performed on the left cerebral hemisphere for anatomic documentation purposes. |
| -22 | Increased Procedural Services | Use when operative time, blood loss, or technical difficulty (e.g., sinus involvement, dense adhesions from prior surgery) substantially exceeds the typical case, supported by explicit documentation. |
| -51 | Multiple Procedures | Applies when 61512 is billed with other separately payable procedures during the same session, subject to multiple-procedure payment reduction. |
| -59 | Distinct Service | Use to indicate a distinct procedure was performed at a separate anatomic site during the same operative session, bypassing an NCCI edit when clinically supported. |
| -52 | Reduced Services | Use when the procedure was electively reduced or partially performed relative to the full code descriptor. |
| -53 | Discontinued | Use when the procedure was started but terminated due to extenuating circumstances such as hemodynamic instability. |
| -58 | Staged | Use for a planned or expected staged return to the OR within the global period, such as a planned second-look resection. |
| -62 | Two Surgeons | Use when two surgeons of different specialties each perform a distinct portion of the procedure as primary surgeons. |
| -78 | Return to OR | Use for an unplanned return to the operating room for a complication such as post-operative hematoma evacuation during the global period. |
| -79 | Unrelated Procedure | Use for an unrelated procedure by the same physician during the post-operative period, restarting a new global period. |
| -80 | Assistant Surgeon | Use to report a fully scrubbed assistant surgeon’s services, common given the vascular complexity of meningioma dissection. |
🩺 Common ICD‑10‑CM Pairings
Primary Diagnosis Group
| ICD‑10 | Description | HCC? | Notes |
|---|---|---|---|
| D32.0 | Benign neoplasm of cerebral meninges | ✅ Yes | Most common principal diagnosis paired with 61512; confirmed by final pathology showing WHO Grade I meningioma. |
| D42.0 | Neoplasm of uncertain behavior of cerebral meninges | ✅ Yes | Use when pathology is pending or histology is indeterminate at time of coding; revise once final pathology confirms behavior. |
| C70.0 | Malignant neoplasm of cerebral meninges | ✅ Yes | Use for atypical (WHO Grade II) or anaplastic (WHO Grade III) meningioma confirmed on final pathology. |
Secondary Group
| ICD‑10 | Description | HCC? | Notes |
|---|---|---|---|
| G93.89 | Other specified disorders of brain | ❌ No | Captures documented mass effect, cerebral edema, or midline shift attributable to the tumor. |
| R51.9 | Headache, unspecified | ❌ No | Common presenting symptom driving the imaging workup that identified the meningioma. |
Etiology / Complication
| ICD‑10 | Description | HCC? | Notes |
|---|---|---|---|
| R56.9 | Unspecified convulsions | ❌ No | Use when seizure activity was the presenting symptom or a post-operative complication; specify epilepsy type codes if a formal seizure disorder is diagnosed. |
| G91.9 | Hydrocephalus, unspecified | ✅ Yes | Use when the tumor or its resection is associated with obstructive hydrocephalus requiring separate management. |
Coding Specificity Reminder
Do not default to D42.0 out of convenience — hold the claim for final pathology whenever possible, since D32.0 and C70.0 carry materially different clinical and DRG implications than an uncertain-behavior code. Confirm laterality and lobar location are captured in the operative note even though they don’t drive ICD-10-CM code choice, since they support medical necessity review.
🏥 MS‑DRG Considerations
Inpatient admissions for 61512 typically group to MDC 01 (Diseases and Disorders of the Nervous System) under MS-DRGs 023–025 (Craniotomy and Endovascular Intracranial Procedures), with final DRG weight driven heavily by documented CC/MCC status such as post-operative hemorrhage, cerebral edema, or hydrocephalus. There is no disease-specific National Coverage Determination (NCD) governing craniotomy for meningioma resection; coverage is assessed under standard Medicare medical necessity criteria and reasonable-and-necessary surgical indication documentation rather than a dedicated NCD. Local Coverage Determinations (LCDs) specific to craniotomy CPT codes were not identified for Noridian JE or JF at the time of this review — confirm current LCD/Article status directly on the Noridian coverage database before claim submission, since coverage policy for major neurosurgical procedures is more often addressed through general surgical documentation requirements than a procedure-specific LCD.
🔧 ICD‑10‑PCS Equivalents
| PCS Code | Full Description | Modality |
|---|---|---|
| 00BE0ZZ | Excision of Cerebral Meninges, Open Approach | Open surgical excision — most common approach for 61512. |
| 00BE3ZZ | Excision of Cerebral Meninges, Percutaneous Approach | Rarely applicable to a full craniotomy resection; reserved for limited percutaneous meningeal biopsy scenarios. |
| 00BE4ZZ | Excision of Cerebral Meninges, Percutaneous Endoscopic Approach | Applicable when an endoscopic-assisted technique is documented alongside the open craniotomy. |
| 00B00ZZ | Excision of Frontal Lobe, Open Approach | Use as an additional code when the operative report documents excision of adjacent brain parenchyma invaded by the tumor, not just the dural-based mass. |
PCS Character Analysis
| Position | Character | Value | Definition |
|---|---|---|---|
| 1 | Section | 0 | Medical and Surgical section, covering the vast majority of operative procedures. |
| 2 | Body System | 0 | Central Nervous System and Cranial Nerves. |
| 3 | Root Operation | B | Excision — cutting out a portion of a body part without replacement. |
| 4 | Body Part | E | Cerebral Meninges — the dural-based body part targeted for meningioma excision. |
| 5 | Approach | 0 | Open — direct visualization and instrumentation through the craniotomy exposure. |
| 6 | Device | Z | No Device — no implant or device is left in place as part of the excision itself. |
| 7 | Qualifier | Z | No Qualifier — standard excision without a qualifying modifier value. |
Root Operation Comparison
- Excision (B) is correct when a portion of the meninges bearing the tumor is cut out, which matches the CPT descriptor for 61512; do not use Resection (T), which implies removal of an entire body part rather than a portion of it.
- If the operative note documents freeing compressed but otherwise intact brain tissue from the tumor without cutting it out, a separate Release (N) root operation code may be warranted in addition to the Excision code.
- Confirm with facility CDI whether the meninges or an adjacent named brain lobe is the primary target of excision, since this determines whether 00BE0ZZ or a lobe-specific code such as 00B00ZZ is the principal procedure code for DRG assignment.
📝 Coding Examples
Example 1
Clinical Scenario: A 58-year-old presents with new-onset headaches and MRI showing a 3.2 cm right parasagittal mass consistent with meningioma. She undergoes a right frontal craniotomy with stereotactic navigation and operating microscope for gross total resection. Final pathology confirms WHO Grade I meningioma.
| Field | Code | Rationale |
|---|---|---|
| CPT | 61512-RT | Supratentorial meningioma excision confirmed by final pathology, right-sided craniotomy documented. |
| PDx | D32.0 | Final pathology confirms benign (WHO Grade I) meningioma. |
Note
Example 2
Clinical Scenario: A 71-year-old with a known meningioma undergoes right frontal craniotomy for resection; intraoperatively the surgeon also identifies and drains an unrelated small subdural hematoma from a remote fall, requiring a separate burr hole at a distinct site.
| Field | Code | Rationale |
|---|---|---|
| CPT 1 | 61512-RT | Primary meningioma excision procedure. |
| CPT 2 | 61154-59 | Burr hole drainage of subdural hematoma at a separate site, distinct from the craniotomy incision — verify against current NCCI edits before submission. |
| PDx | D32.0 | Meningioma remains the principal diagnosis driving the admission and primary procedure. |
Warning
Confirm the operative note explicitly documents anatomically separate incisions/sites before appending modifier -59, since NCCI frequently bundles burr hole and craniotomy codes performed through the same exposure.
Example 3
Clinical Scenario: A patient returns to the OR eight days after an initial right frontal craniotomy for meningioma resection with a post-operative epidural hematoma requiring evacuation through the same craniotomy site.
| Field | Code | Rationale |
|---|---|---|
| CPT | 61154-78-RT | Unplanned return to the OR for a complication (epidural hematoma evacuation) within the 90-day global period of the original 61512 procedure. |
| PDx | G97.51 | Intraoperative hemorrhage and hematoma of a nervous system organ or structure complicating a procedure. |
Global period reminder, if applicable
⚠️ Common Coding Pitfalls
- Pitfall 1: Defaulting to 61512 based on the surgeon’s pre-operative impression of “meningioma” without confirming the final pathology report, which can result in a coding error if the diagnosis changes to glioma or another tumor type requiring 61510 instead.
- Pitfall 2: Billing +69990 for the operating microscope alongside +61781 for stereotactic navigation without confirming both were medically necessary and separately documented, risking NCCI bundling denials.
- Pitfall 3: Appending modifier -22 without an operative note that explicitly quantifies the added time, blood loss, or technical obstacles, which is the most common reason payers deny or downcode the increased-services claim.
- Pitfall 4: Failing to capture CC/MCC-qualifying complications such as post-operative hemorrhage, cerebral edema, or hydrocephalus, which can significantly understate the correct MS-DRG weight for the inpatient stay.
- Pitfall 5: Reporting modifier -50 for a craniotomy, which is inappropriate since the bilateral indicator for 61512 is 0 and the procedure is not designed for simultaneous bilateral billing.
- Pitfall 6: Billing unrelated E/M visits or imaging during the 90-day global period without appending modifier -24 or -79 and without documentation clearly establishing medical unrelatedness, resulting in bundling denials.
📎 Sources
1. American Medical Association. *CPT® 2026 Professional Edition.* AMA; 2026. 2. Centers for Medicare & Medicaid Services. *Calendar Year (CY) 2026 Medicare Physician Fee Schedule Final Rule (CMS-1832-F).* CMS; 2025. https://www.cms.gov/newsroom/fact-sheets/calendar-year-cy-2026-medicare-physician-fee-schedule-final-rule-cms-1832-f 3. Find-A-Code. *CPT® Code 61512 — RVU and Global Period Data.* InnoviHealth Systems; 2026. https://www.findacode.com/cpt/61512-cpt-code.html 4. Centers for Disease Control and Prevention, National Center for Health Statistics. *ICD-10-CM 2026 Codes D32.0, D42.0, C70.0.* CDC/NCHS; 2025. 5. Noridian Healthcare Solutions. *Global Surgery — JE Part B.* Noridian Medicare; 2026. https://med.noridianmedicare.com/web/jeb/specialties/surgery/global-surgerySources 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.