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CPT 67420: Lateral Orbitotomy for Orbital Tumor Resection

CPT code 67420 denotes a lateral orbitotomy procedure involving an incision through the side of the orbit and removal of a bone segment (as a flap or window) to access and remove an expanding orbital tumor. This code is significant for national surgical oncology and ophthalmic surgical billing because it captures a technically complex procedure with implications for resource utilization, facility setting, and surgeon specialty billing. Payers commonly covering this service include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find a concise exploration of clinical context, typical sites of service, and the aspects of coding and coverage that affect reimbursement and preauthorization workflows. The publication outlines benchmarks for utilization and common billing themes, highlights policy considerations and prior authorization trends relevant to orbital tumor resection, and provides clinical context to inform coding accuracy. Data not available in the input is noted where applicable, and the content is written for a national audience without state-specific references.

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Billing Code Overview

CPT code 67420 describes a surgical procedure in which the surgeon makes an incision through the side of the orbit (the bony cavity that houses the eye) and removes a segment of bone — either temporarily as a bone flap or permanently as a bone window — to access and excise an expanding orbital tumor. This procedure is a type of orbital surgery aimed at tumor resection.

Service type: Surgical tumor resection of the orbit via lateral orbitotomy with bone removal
Typical site of service: Hospital operating room or outpatient surgical center where orbital or neurosurgical procedures are performed

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CPT 67420: Lateral Orbitotomy for Orbital Tumor Resection

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Billing Code Overview

Service type: Surgical tumor resection of the orbit via lateral orbitotomy with bone removal
Typical site of service: Hospital operating room or outpatient surgical center where orbital or neurosurgical procedures are performed

Clinical & Coding Specifications

Clinical Context

A typical patient is an adult presenting with progressive unilateral proptosis, diplopia, decreased visual acuity, or an enlarging orbital mass noted on imaging. Cross-sectional imaging (CT and MRI) demonstrates an intraorbital space-occupying lesion consistent with an expanding tumor—such as a benign meningioma, hemangioma, or metastatic lesion—requiring surgical access to the orbit. Ophthalmology oculoplastic surgeons or neurosurgeons evaluate the patient in clinic, obtain informed consent, and coordinate preoperative neuroimaging, laboratory testing, and anesthesia clearance. In the operating room under general anesthesia, the surgeon makes an incision through the lateral orbit, creates a temporary bone flap or removes a bony window to expose the lesion, performs tumor resection or biopsy, achieves hemostasis, and either replaces the bone flap or leaves a window as clinically indicated. Postoperative care includes observation for vision changes, pain control, antibiotics as indicated, and follow-up imaging to confirm resection and monitor for complications such as orbital hemorrhage or infection. Hospital outpatient surgery centers and tertiary academic hospitals are common sites for this procedure.

Coding Specifications

Modifier	Description	When to Use
`22`	Increased procedural services	Use when the orbital bone removal required substantially greater work than typical due to extensive tumor involvement or unexpected complexity.
`23`	Unusual anesthesia	Use when general anesthesia must be used but is ordinarily not required for a comparable procedure, or when anesthesia is substantially complicated.
`26`	Professional component	Use when reporting only the surgeon’s professional component separate from technical facility charges (rare for surgical CPTs).
`50`	Bilateral procedure	Use if essentially the same orbital bone procedure is performed on both orbits during the same operative session.
`51`	Multiple procedures	Use when this orbital bone procedure is performed in conjunction with other distinct procedures during the same session.
`52`	Reduced services	Use if the procedure is partially reduced or not completed as originally planned.
`53`	Discontinued procedure	Use when the procedure is started but terminated due to extenuating circumstances before completion.
`62`	Two surgeons	Use when two surgeons work together as primary surgeons performing distinct operative work on the same operative field.
`66`	Surgical team	Use when a surgical team concept is used for complex cases requiring qualified team members.
`78`	Return to OR for related procedure during global period	Use when a patient requires a return to the operating room for a complication related to the original orbital procedure during the global period.
`80`	Assistant surgeon	Use when an assistant surgeon provides services beyond routine assistance during the orbital bone removal.
`81`	Minimum assistant surgeon	Use when minimal assistance is provided by a second surgeon.
`82`	Assistant surgeon (qualified resident)	Use when a qualified resident performs assistance due to unavailable qualified assistant.
`LT`	Left side	Use to indicate the procedure was performed on the left orbit.
`RT`	Right side	Use to indicate the procedure was performed on the right orbit.

Taxonomy Code	Specialty	Notes
207P00000X	Ophthalmology	Oculoplastic surgeons commonly perform orbital bone approaches for tumor access.
2084P0800X	Neurological Surgery	Neurosurgeons perform orbital bone removal when intracranial extension or complex skull base access is required.
207K00000X	Otolaryngology	Head and neck surgeons with skull base expertise may perform lateral orbital or skull base approaches.
207L00000X	Plastic Surgery	Reconstructive plastic surgeons may participate when complex reconstruction of orbital bones or soft tissue is necessary.
2086S0123X	Radiation Oncology	Included as a coordinating specialty when planning adjuvant therapy following resection (consultative role).

Related Diagnoses

ICD-10 Code	Description	Clinical Relevance
`D33.3`	Benign neoplasm of cranial nerves, unspecified	Includes benign orbital meningiomas or other benign intracranial/cranial nerve tumors that may extend into the orbit and require bony access.
`C71.9`	Malignant neoplasm of brain, unspecified	Malignant intracranial tumors with orbital extension may necessitate orbital bone removal for access and resection.
`C79.9`	Secondary malignant neoplasm of unspecified site	Metastatic lesions to the orbit from distant primaries that require surgical debulking through an orbital approach.
`H05.0`	Orbital cellulitis	Severe infectious processes causing orbital compartment syndrome or abscess may rarely require bone removal for drainage and decompression.
`H04.29`	Other disorders of lacrimal gland	Expanding lacrimal gland tumors or masses adjacent to the lateral orbit that need bony access for complete excision.
`D44.5`	Neoplasm of uncertain or unknown behavior of retroperitoneum and peritoneum (placeholder)	Represents neoplasms of uncertain behavior when pathology is unclear preoperatively and surgical access via orbit is required.
`H02.809`	Unspecified ptosis of unspecified eyelid	Secondary diagnosis when tumor causes mechanical ptosis necessitating operative correction concurrent with tumor access.

Related CPT Codes

CPT Code	Description	Relationship to This Procedure
`61620`	Craniectomy or craniotomy for lesion of skull base, orbital roof or anterior cranial fossa approach	May be performed when orbital tumor extends to the anterior cranial fossa and requires combined cranial and orbital access; often part of multidisciplinary skull base surgery.
`61622`	Craniotomy for removal of lesion involving orbital apex/optic nerve	Related for lesions involving the orbital apex where optic nerve decompression or resection is required, complementary to lateral orbitotomy.
`67145`	Reparative procedure on orbit/extraocular muscles (excision of orbital lesion via orbitotomy)	May be used for removal of orbital lesions when the approach is through an orbitotomy without extensive bony removal; adjunct or alternative technique.
`67415`	Orbitotomy, lateral; with exploration and removal of intraorbital tumor	Closely related; this code describes lateral orbitotomy techniques that may overlap with `67420` when bone window or flap is created for tumor removal.
`61635`	Reconstruction of cranial base/repair of orbital roof defect	Performed after removal of bone to reconstruct the orbital roof or lateral wall when replacement of bone flap or grafting is required.

CPT 67400: Orbital Exploration and Biopsy

CPT-67405-ORBITAL-INCISION-DRAINAGE-ABSCESS

CPT 67405: Orbital Incision and Drainage for Abscess

CPT-67412-ORBITAL-INCISION-ORBITAL-TISSUE-REMOVAL

CPT 67412: Orbital Incision for Removal of Diseased Orbital Tissue

CPT-67413-ORBITAL-FOREIGN-BODY-REMOVAL

CPT 67413: Incision of Orbit for Removal of Foreign Body

CPT-67414-ORBITAL-BONY-DECOMPRESSION-EYELID-CONJUNCTIVAL-APPROACH

CPT 67414: Orbital Bony Decompression via Eyelid or Conjunctival Approach

CPT-67415-ORBITAL-NEEDLE-BIOPSY-DIAGNOSTIC

CPT 67415: Orbital Needle Biopsy for Diagnostic Evaluation

CPT-67430-ORBITAL-FOREIGN-BODY-REMOVAL-ORBITAL-SURGERY

CPT 67430: Orbital Foreign Body Removal, Bone Window or Flap

CPT-67440-ORBITOTOMY-DRAINAGE-ORBITAL-FLUID-COLLECTION

CPT 67440: Orbitotomy for Drainage of Orbital Cyst or Abscess

CPT-67445-ORBITAL-BONE-REMOVAL-ORBITAL-DECOMPRESSION

CPT 67445: Orbital Bone Removal for Decompression or Access

CPT-67450-ORBITOTOMY-EXPLORATION-BIOPSY

CPT 67450: Orbitotomy with Exploration and Biopsy

References

1.CPT® Codes and Descriptions. AAPC. Retrieved Aug 11, 2026.Maintains the CPT code set's official descriptions and guidelines, licensed from the American Medical Association, used as the definitional source for CPT codes on this page.
2.HCPCS Quarterly Update. Centers for Medicare & Medicaid Services (CMS). Retrieved Aug 11, 2026.CMS's quarterly release of HCPCS Level II codes and short/long descriptors, the source for HCPCS code definitions and update history.
3.ICD-10-CM Full Code List. Centers for Medicare & Medicaid Services (CMS). Retrieved Aug 11, 2026.CMS's complete ICD-10-CM diagnosis code list, used to cross-reference diagnosis codes associated with this procedure or service.

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Clinical & Coding Specifications

Clinical Context

Coding Specifications

Modifier	Description	When to Use
`22`	Increased procedural services	Use when the orbital bone removal required substantially greater work than typical due to extensive tumor involvement or unexpected complexity.
`23`	Unusual anesthesia	Use when general anesthesia must be used but is ordinarily not required for a comparable procedure, or when anesthesia is substantially complicated.
`26`	Professional component	Use when reporting only the surgeon’s professional component separate from technical facility charges (rare for surgical CPTs).
`50`	Bilateral procedure	Use if essentially the same orbital bone procedure is performed on both orbits during the same operative session.
`51`	Multiple procedures	Use when this orbital bone procedure is performed in conjunction with other distinct procedures during the same session.
`52`	Reduced services	Use if the procedure is partially reduced or not completed as originally planned.
`53`	Discontinued procedure	Use when the procedure is started but terminated due to extenuating circumstances before completion.
`62`	Two surgeons	Use when two surgeons work together as primary surgeons performing distinct operative work on the same operative field.
`66`	Surgical team	Use when a surgical team concept is used for complex cases requiring qualified team members.
`78`	Return to OR for related procedure during global period	Use when a patient requires a return to the operating room for a complication related to the original orbital procedure during the global period.
`80`	Assistant surgeon	Use when an assistant surgeon provides services beyond routine assistance during the orbital bone removal.
`81`	Minimum assistant surgeon	Use when minimal assistance is provided by a second surgeon.
`82`	Assistant surgeon (qualified resident)	Use when a qualified resident performs assistance due to unavailable qualified assistant.
`LT`	Left side	Use to indicate the procedure was performed on the left orbit.
`RT`	Right side	Use to indicate the procedure was performed on the right orbit.

Taxonomy Code	Specialty	Notes
207P00000X	Ophthalmology	Oculoplastic surgeons commonly perform orbital bone approaches for tumor access.
2084P0800X	Neurological Surgery	Neurosurgeons perform orbital bone removal when intracranial extension or complex skull base access is required.
207K00000X	Otolaryngology	Head and neck surgeons with skull base expertise may perform lateral orbital or skull base approaches.
207L00000X	Plastic Surgery	Reconstructive plastic surgeons may participate when complex reconstruction of orbital bones or soft tissue is necessary.
2086S0123X	Radiation Oncology	Included as a coordinating specialty when planning adjuvant therapy following resection (consultative role).

Related Diagnoses

ICD-10 Code	Description	Clinical Relevance
`D33.3`	Benign neoplasm of cranial nerves, unspecified	Includes benign orbital meningiomas or other benign intracranial/cranial nerve tumors that may extend into the orbit and require bony access.
`C71.9`	Malignant neoplasm of brain, unspecified	Malignant intracranial tumors with orbital extension may necessitate orbital bone removal for access and resection.
`C79.9`	Secondary malignant neoplasm of unspecified site	Metastatic lesions to the orbit from distant primaries that require surgical debulking through an orbital approach.
`H05.0`	Orbital cellulitis	Severe infectious processes causing orbital compartment syndrome or abscess may rarely require bone removal for drainage and decompression.
`H04.29`	Other disorders of lacrimal gland	Expanding lacrimal gland tumors or masses adjacent to the lateral orbit that need bony access for complete excision.
`D44.5`	Neoplasm of uncertain or unknown behavior of retroperitoneum and peritoneum (placeholder)	Represents neoplasms of uncertain behavior when pathology is unclear preoperatively and surgical access via orbit is required.
`H02.809`	Unspecified ptosis of unspecified eyelid	Secondary diagnosis when tumor causes mechanical ptosis necessitating operative correction concurrent with tumor access.

Related CPT Codes

CPT Code	Description	Relationship to This Procedure
`61620`	Craniectomy or craniotomy for lesion of skull base, orbital roof or anterior cranial fossa approach	May be performed when orbital tumor extends to the anterior cranial fossa and requires combined cranial and orbital access; often part of multidisciplinary skull base surgery.
`61622`	Craniotomy for removal of lesion involving orbital apex/optic nerve	Related for lesions involving the orbital apex where optic nerve decompression or resection is required, complementary to lateral orbitotomy.
`67145`	Reparative procedure on orbit/extraocular muscles (excision of orbital lesion via orbitotomy)	May be used for removal of orbital lesions when the approach is through an orbitotomy without extensive bony removal; adjunct or alternative technique.
`67415`	Orbitotomy, lateral; with exploration and removal of intraorbital tumor	Closely related; this code describes lateral orbitotomy techniques that may overlap with `67420` when bone window or flap is created for tumor removal.
`61635`	Reconstruction of cranial base/repair of orbital roof defect	Performed after removal of bone to reconstruct the orbital roof or lateral wall when replacement of bone flap or grafting is required.

CPT 67400: Orbital Exploration and Biopsy

CPT-67405-ORBITAL-INCISION-DRAINAGE-ABSCESS

CPT 67405: Orbital Incision and Drainage for Abscess

CPT-67412-ORBITAL-INCISION-ORBITAL-TISSUE-REMOVAL

CPT 67412: Orbital Incision for Removal of Diseased Orbital Tissue

CPT-67413-ORBITAL-FOREIGN-BODY-REMOVAL

CPT 67413: Incision of Orbit for Removal of Foreign Body

CPT-67414-ORBITAL-BONY-DECOMPRESSION-EYELID-CONJUNCTIVAL-APPROACH

CPT 67414: Orbital Bony Decompression via Eyelid or Conjunctival Approach

CPT-67415-ORBITAL-NEEDLE-BIOPSY-DIAGNOSTIC

CPT 67415: Orbital Needle Biopsy for Diagnostic Evaluation

CPT-67430-ORBITAL-FOREIGN-BODY-REMOVAL-ORBITAL-SURGERY

CPT 67430: Orbital Foreign Body Removal, Bone Window or Flap

CPT-67440-ORBITOTOMY-DRAINAGE-ORBITAL-FLUID-COLLECTION

CPT 67440: Orbitotomy for Drainage of Orbital Cyst or Abscess

CPT-67445-ORBITAL-BONE-REMOVAL-ORBITAL-DECOMPRESSION

CPT 67445: Orbital Bone Removal for Decompression or Access

CPT-67450-ORBITOTOMY-EXPLORATION-BIOPSY

CPT 67450: Orbitotomy with Exploration and Biopsy

References

1.CPT® Codes and Descriptions. AAPC. Retrieved Aug 11, 2026.Maintains the CPT code set's official descriptions and guidelines, licensed from the American Medical Association, used as the definitional source for CPT codes on this page.
2.HCPCS Quarterly Update. Centers for Medicare & Medicaid Services (CMS). Retrieved Aug 11, 2026.CMS's quarterly release of HCPCS Level II codes and short/long descriptors, the source for HCPCS code definitions and update history.
3.ICD-10-CM Full Code List. Centers for Medicare & Medicaid Services (CMS). Retrieved Aug 11, 2026.CMS's complete ICD-10-CM diagnosis code list, used to cross-reference diagnosis codes associated with this procedure or service.

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CPT 67420: Lateral Orbitotomy for Orbital Tumor Resection

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Billing Code Overview

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CPT 67420: Lateral Orbitotomy for Orbital Tumor Resection

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Billing Code Overview

Clinical & Coding Specifications

Clinical Context

Coding Specifications

Related Diagnoses

Related CPT Codes

Related Codes

References

Clinical & Coding Specifications

Clinical Context

Coding Specifications

Related Diagnoses

Related CPT Codes

Related Codes

References