CPT 61546 Pituitary Tumor Resection Reimbursement | OpenPayer

Summary & Overview

CPT 61546: Craniotomy for Pituitary Tumor Resection

CPT code 61546 denotes a cranial approach in which bone from the skull is removed to access and resect pituitary tissue or excise a pituitary tumor. This neurosurgical procedure is a high-acuity, specialty operative service with implications for hospital resource use, perioperative care pathways, and payer authorization protocols. Nationally, pituitary tumor resections are clinically significant because they address both endocrine and neurologic morbidity and often require multidisciplinary care.

Key payers covered in this analysis include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find an overview of typical sites of service, common clinical contexts for use of the code, and what to expect in terms of payer recognition and coverage patterns. The publication highlights benchmarks relevant to utilization and billing practice, recent policy or coding guidance that affects coverage and claims processing, and the clinical setting in which 61546 is most commonly reported.

This summary provides clinicians, billing professionals, and policy analysts with a concise reference to the code’s clinical intent, typical care setting, and payer landscape. Data not available in the input is noted where applicable in detailed sections of the full publication.

AetnaBlue Cross Blue ShieldCigna HealthUnitedHealthcareMedicare61546CPTpituitary-tumorcraniotomyneurosurgeryoperative-procedurehospital-surgeryambulatory-surgery

Billing Code Overview

CPT code 61546 describes a neurosurgical procedure in which the provider removes a portion of the skull bone to access and resect part of the pituitary gland or to excise a pituitary tumor. The service type is neurosurgical pituitary resection/craniotomy for pituitary tumor. The typical site of service is an inpatient or outpatient hospital operating room or a specialized ambulatory surgery center equipped for intracranial neurosurgery.

Clinical & Coding Specifications

Clinical Context

A 52-year-old patient with progressive visual field defects and biochemical evidence of pituitary hormone hypersecretion is evaluated by a multidisciplinary team including neurosurgery and endocrinology. Imaging with MRI identifies a sellar/suprasellar mass consistent with a pituitary macroadenoma exerting pressure on the optic chiasm. After endocrine optimization and informed consent, the patient is scheduled for a transcranial craniotomy for resection of a pituitary tumor when a transsphenoidal approach is not feasible due to tumor extension, prior sinonasal surgery, or cavernous sinus involvement.

The clinical workflow includes preoperative localization imaging (MRI with and without contrast), baseline endocrine testing, anesthesia assessment, and perioperative steroids if indicated. In the operating room, the neurosurgeon performs a craniotomy to remove a portion of skull bone and exposes the sella turcica to resect the pituitary lesion (CPT 61546). Intraoperative adjuncts may include neuronavigation, intraoperative neurophysiologic monitoring, and reconstructive techniques for skull base closure. Postoperatively the patient is monitored in an intensive care or neurosurgical step-down unit, with serial neurologic checks, endocrine assessment for diabetes insipidus or adrenal insufficiency, and follow-up MRI to assess residual tumor and surgical complications.

Coding Specifications

Modifier	Description	When to Use
`22`

CPT 61531: Subdural Electrode Placement for Seizure Monitoring

CPT-61530-CEREBELLOPONTINE-ANGLE-TUMOR-RESECTION-TRANSTEMPORAL-POSTERIOR-FOSSA

CPT 61530: Cerebellopontine Angle Tumor Resection, Transtemporal and Posterior Fossa

61519-CRANIECTOMY-FOR-EXCISION-OF-BRAIN-TUMOR-INFRATENTORIAL-OR

CPT 61519: Craniectomy for Excision of Brain Tumor, Infratentorial or Posterior Fossa

CPT-61564-CRANIAL-BONE-TUMOR-RESECTION-OPTIC-NERVE-DECOMPRESSION

CPT 61564: Cranial Bone Tumor Resection with Optic Nerve Decompression

CPT-61522-POSTERIOR-FOSSA-BRAIN-ABSCESS-EXCISION

CPT 61522: Posterior Fossa Brain Abscess or Lesion Excision

CPT-61544-CHOROID-PLEXUS-EXCISION-COAGULATION-NEUROSURGERY

CPT 61544: Excision or Coagulation of Choroid Plexus

CPT-61314-NEUROSURGICAL-HEMATOMA-EVACUATION-BURR-HOLES

CPT 61314: Neurosurgical Hematoma Evacuation, Burr Holes

61518-CRANIECTOMY-FOR-EXCISION-OF-BRAIN-TUMOR-INFRATENTORIAL-OR

CPT 61518: Craniectomy for Infratentorial/Posterior Fossa Brain Tumor Excision

CPT-61550-CRANIAL-VAULT-RESHAPING-SKULL-SUTURE-REPAIR

CPT 61550: Cranial Vault Reshaping for Skull Suture Abnormality

CPT-61320-INTRACRANIAL-ABSCESS-DRAINAGE-SUPRATENTORIAL

CPT 61320: Supratentorial Intracranial Abscess Drainage

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Taxonomy Code	Specialty	Notes
`207V00000X`	Neurological Surgery	Primary specialty performing `CPT 61546` for transcranial pituitary resections.
`207K00000X`	Otolaryngology - Head & Neck Surgery	Performs skull base approaches or combined cranial-base procedures in select cases.
`2084P0800X`	Endocrinology	Provides pre- and postoperative endocrine management; not the operating surgeon.
`363L00000X`	Anesthesiology	Provides general anesthesia and intraoperative critical care for craniotomy cases.

Related Diagnoses

ICD-10 Code	Description	Clinical Relevance
`D35.2`	Benign neoplasm of pituitary gland	Common indication for surgical resection when tumor causes mass effect or hormonal dysfunction.
`C75.1`	Malignant neoplasm of pituitary gland	Rare; may require resection for diagnosis, symptom control, or adjunctive therapy.
`E22.0`	Acromegaly and pituitary gigantism	Functional pituitary adenoma producing growth hormone; surgery often primary treatment.
`E22.1`	Syndrome of inappropriate antidiuretic hormone secretion (SIADH)	May be associated with pituitary lesions or perioperative management considerations.
`E24.0`	Cushing disease	ACTH-secreting pituitary adenoma causing hypercortisolism; transcranial resection used when other approaches not feasible.
`H06.4`	Visual disturbance	Represents visual field deficits from chiasmal compression prompting surgical decompression.
`G93.6`	Cerebral edema (postoperative or presenting)	May complicate large sellar masses or the postoperative course necessitating surgical planning.
`R41.0`	Disorientation and obtundation	Neurologic symptoms that can occur with large pituitary masses causing mass effect.

Related CPT Codes

CPT Code	Description	Relationship to This Procedure
`61546`	Craniectomy or craniotomy, with removal of skull bone, for excision of tumor, pituitary gland (partial resection)	Primary operative code describing transcranial removal of pituitary tumor where skull bone is removed.
`61782`	Stereotactic radiosurgery, per day, single or multiple lesions, cranial	May be used as adjuvant therapy for residual pituitary tumor postoperatively or as alternative to open resection for select lesions.
`62165`	Ventriculostomy, drain, or intracranial catheter (for CSF drainage)	May be placed perioperatively if cerebrospinal fluid diversion is required for reconstruction or to manage hydrocephalus.
`62223`	Lumbar puncture, therapeutic (with or without injection)	Used if lumbar drainage is required postoperatively to manage CSF leak or reduce pressure during repair.
`66984`	Cataract extraction with intraocular lens (example unrelated eye code)	Data not relevant to pituitary surgery; listed to indicate no additional ophthalmic procedure is included unless performed separately.

Note: If other related codes are required for billing of intraoperative monitoring, pathology, or radiology, those are billed separately per payer rules. If no additional related CPT codes were provided in the input, the table above lists commonly associated services in the perioperative care pathway.

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