Summary & Overview
CPT 77012: CT-Guided Needle Placement Supervision and Interpretation
CPT code 77012 denotes the supervision and interpretation component for computed tomography (CT) guided needle placement, such as biopsy or aspiration. The code is significant because it separates the imaging professional’s clinical oversight and image interpretation from the technically reportable invasive procedure, allowing distinct capture of professional imaging work. This separation matters nationally for accurate clinical documentation, professional fee reporting, and claims adjudication where imaging and procedural services are billed separately. Key payers referenced in this analysis include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find a concise explanation of what CPT code 77012 represents, how it fits into CT-guided procedural workflows, and the clinical contexts in which it is used. The publication outlines common billing considerations, typical sites of service, and the relationship between the imaging supervision/interpretation and the separately reportable needle procedure. It also highlights where payers commonly focus reviews—documentation of supervision, time and complexity of interpretation, and linkage to the primary procedure—and identifies where policy updates or coding guidance may affect reporting practices. Data not available in the input are explicitly noted where relevant.
Billing Code Overview
CPT code 77012 describes supervision and interpretation for computed tomography (CT) guided needle placement, performed when CT guidance is used to place a needle for a separately reportable procedure such as biopsy or aspiration. This code represents only the imaging supervision and interpretation component of the CT-guided needle placement and is reported in addition to the procedure that involves the actual needle placement or tissue sampling.
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Service type: Imaging supervision and interpretation for CT-guided needle placement
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Typical site of service: Hospital outpatient department, ambulatory surgery center, or outpatient imaging center
Clinical & Coding Specifications
Clinical Context
A 62-year-old patient with a solitary 3.0 cm pulmonary nodule identified on chest CT is scheduled for CT-guided transthoracic needle biopsy. The interventional radiology team reviews imaging and clinical history, obtains informed consent, verifies coagulation status, and coordinates sedation and nursing support. On the procedure day, the patient is positioned in the CT scanner suite (outpatient ambulatory surgery center or hospital radiology department). The radiologist performs image localization using CT, supervises needle placement, confirms adequate sampling positions with intermittent CT imaging, and interprets the real-time images. A separate CPT-coded service documents the biopsy or aspiration (needle placement and tissue sampling). The reporting for imaging supervision and interpretation during CT-guided needle placement is billed with 77012, representing only the imaging supervision and interpretation component. Typical sites of service include hospital outpatient radiology departments, ambulatory surgery centers, and free-standing imaging centers where CT-guided invasive procedures are performed.
Coding Specifications
| Modifier | Description | When to Use |
|---|---|---|
26 | Professional component | Use when reporting only the physician interpretation component when technical components are billed separately. |
50 | Bilateral procedure | Use when identical procedures are performed on both left and right sides and payer requires bilateral modifier. |
51 | Multiple procedures | Use when 77012 is billed in the same session with other distinct procedures and payer requires modifier for multiple procedures. |
52 | Reduced services | Use when the full service was not performed or was partially reduced. |
53 | Discontinued procedure | Use when procedure is started but terminated due to patient condition or safety concerns. |
59 | Distinct procedural service | Use when another procedure performed in the same session is distinct and separate from the imaging supervision and interpretation. |
62 | Two surgeons | Use when two surgeons work together as primary surgeons for a complex procedure requiring both their skills. |
76 | Repeat procedure by same physician | Use when the same physician repeats the procedure later the same day. |
77 | Repeat procedure by another physician | Use when a different physician repeats the procedure the same day. |
TC | Technical component | Use when billing only the technical component; typically used by facility billing the scanner and technologist services. |
26 | Professional component | Use when billing only the physician’s interpretation (included above for emphasis on relevance). |
QX | Assistive personnel, CRNA | Use when a CRNA or qualified non-physician performs anesthesia services billed separately as required by payer. |
AS | Physician assistant (PA) services | Use when a PA performs parts of the service under appropriate supervision rules. |
| Taxonomy Code | Specialty | Notes |
|---|---|---|
| 2085R0200X | Interventional Radiology | Most common specialty performing CT-guided needle placement and interpretation. |
| 2086S0122X | Diagnostic Radiology | Diagnostic radiologists commonly supervise and interpret CT-guided biopsies. |
| 207K00000X | General Surgery | Surgeons may perform image-guided biopsies in certain practice settings. |
| 246M00000X | Thoracic Surgery | Thoracic surgeons may be involved for pulmonary or mediastinal biopsies. |
| 363A00000X | Anesthesiology | Anesthesiologists or CRNAs provide sedation/anesthesia support during procedures. |
Related Diagnoses
| ICD-10 Code | Description | Clinical Relevance |
|---|---|---|
C78.01 | Secondary malignant neoplasm of lung | Pulmonary metastasis may require CT-guided biopsy for histologic confirmation. |
C34.90 | Malignant neoplasm of unspecified part of bronchus or lung, unspecified | Primary lung malignancy presenting as a nodule that often requires CT-guided biopsy. |
R91.8 | Other nonspecific abnormal finding of lung field | Incidental pulmonary nodules or abnormalities prompting image-guided biopsy. |
J98.4 | Other disorders of lung | Non-neoplastic lung processes (e.g., organizing pneumonia) that may need tissue diagnosis. |
D48.9 | Neoplasm of uncertain behavior, unspecified | Indeterminate lesions requiring biopsy to determine benign vs malignant status. |
Related CPT Codes
| CPT Code | Description | Relationship to This Procedure |
|---|---|---|
32405 | Biopsy, lung or pleura, needle or trocar; percutaneous with imaging guidance | Often represents the actual tissue sampling procedure performed under CT guidance for which 77012 documents the imaging supervision and interpretation. |
32408 | Biopsy, lung, percutaneous, with imaging guidance; transpleural | Alternative lung biopsy code that may be performed with CT guidance; imaging supervision reported with 77012. |
76942 | Ultrasonic guidance for needle placement (e.g., biopsy, aspiration) | Ultrasound-guided needle placement when used instead of CT; listed as a comparable imaging guidance code in workflow planning. |
77022 | CT guidance for localization or placement of radiation therapy fields | CT guidance procedures that require supervision and interpretation; related in imaging-guided workflows though distinct from biopsy-specific 77012. |
99070 | Supplies and materials (e.g., sterile trays, local anesthesia) | Supplies used during the biopsy procedure; billed by facility or practitioner as applicable alongside the biopsy and imaging supervision. |