Code Radiation And Nuclear Medicine - Certified Professional Coder CPC

1. Which CPT® code is reported for radiopharmaceutical therapy by radiolabeled monoclonal antibody IV infusion?
   Answer: 79403 CPT® 79403 describes radiopharmaceutical therapy by radiolabeled monoclonal antibody by intravenous infusion — the correct code for immunotherapy using antibodies labeled with therapeutic radioisotopes (such as Y-90 ibritumomab tiuxetan), which combine targeted antibody delivery with beta-particle radiation. Code 79101 describes radiopharmaceutical therapy by general intravenous administration — used for IV radiopharmaceuticals that are not monoclonal antibodies; a specific code (79403) exists for radiolabeled antibody infusions and takes precedence. Code 79005 describes oral radiopharmaceutical therapy (e.g., oral I-131). Code 79200 describes intracavitary radiopharmaceutical therapy. When a therapeutic radiopharmaceutical is specifically a radiolabeled monoclonal antibody administered intravenously, 79403 is the applicable code rather than the general IV therapy code 79101.
2. Which CPT® code is reported for this myocardial perfusion SPECT study with both rest and stress acquisitions?
   Answer: 78452 CPT® 78452 describes myocardial perfusion imaging, tomographic (SPECT), multiple studies, at rest and/or stress (exercise and/or pharmacologic) and redistribution and/or rest injection — the correct code when SPECT acquisition is performed at both rest and under stress (pharmacologic or exercise), yielding two tomographic studies for comparison. Code 78451 describes SPECT myocardial perfusion imaging for a single study (rest only or stress only); since both rest and stress acquisitions are performed here, 78452 is required. Code 78492 describes PET myocardial perfusion imaging, multiple studies (rest and stress); SPECT (not PET) technology is used here. Code 78453 describes planar (not SPECT) myocardial perfusion imaging, single study. SPECT versus planar technique and single versus multiple acquisition sessions are the two axes differentiating the myocardial perfusion imaging codes.
3. Which CPT® code is reported for this PET/CT scan from skull base to mid-thigh?
   Answer: 78815 CPT® 78815 describes PET/CT imaging of the skull base to mid-thigh — the correct code for the standard oncologic staging or restaging FDG-PET/CT scan performed from skull base to mid-thigh using a combined imaging platform that provides both metabolic and anatomic data. Code 78812 describes PET (without CT) imaging from skull base to mid-thigh, using PET alone without a concurrent CT; combined PET/CT requires 78815. Code 78816 describes PET/CT for whole-body imaging extending beyond mid-thigh to the toes. Code 78814 describes PET/CT for a limited area (not skull base to mid-thigh). The PET/CT series (78814-78816) should be used in place of the PET-only codes (78811-78813) when CT is performed concurrently as an integral part of the study.
4. Which CPT® code is reported for a gated equilibrium cardiac blood pool study, single resting study?
   Answer: 78472 CPT® 78472 describes cardiac blood pool imaging, gated equilibrium (MUGA), single study at rest or stress — the correct code for a single-acquisition equilibrium radionuclide angiography (ERNA/MUGA) study used to calculate left ventricular ejection fraction (LVEF). A single resting MUGA scan, commonly ordered before and during cardiotoxic chemotherapy monitoring, is reported with 78472. Code 78473 describes gated equilibrium blood pool imaging with multiple studies (exercise and/or pharmacologic stress); a single resting study is performed here, not multiple acquisitions. Code 78451 describes SPECT myocardial perfusion imaging (single study) — a different nuclear cardiology technique assessing myocardial ischemia, not LV function by blood pool method. Code 78452 describes SPECT myocardial perfusion imaging, multiple studies. MUGA (78472/78473) evaluates cardiac function by blood pool kinetics; myocardial perfusion imaging (78451/78452) evaluates myocardial blood flow.
5. Which CPT® code is reported for intermediate radiation treatment planning?
   Answer: 77262 CPT® 77262 describes therapeutic radiology treatment planning, intermediate — the correct code when the planning effort involves moderate complexity, such as multiple anatomic areas or the use of some compensating techniques, falling between the simple and complex thresholds. Code 77261 describes simple radiation treatment planning for a single area with minimal technical complexity. Code 77263 describes complex radiation treatment planning involving advanced techniques; the description here places the plan at the intermediate level. Code 77295 describes preparation of a three-dimensional (3D-CRT) conformal treatment plan, which is a specific service distinct from the clinical complexity planning codes; 77262 and 77263 assess clinical and technical planning complexity, while 77295 specifically describes 3D volumetric planning dosimetry.
6. Which CPT® code is reported for radiation treatment management per 5 treatments?
   Answer: 77427 CPT® 77427 describes radiation treatment management, 5 treatments — the correct code for the physician's weekly management service that covers any 5 treatments, including review of port images, assessment of patient tolerance, evaluation of dosimetry data, and patient examination. Code 77427 is reported once for each block of 5 treatments, regardless of how many physician encounters occur within those 5 fractions. Code 77412 describes radiation treatment delivery (complex, ≥1 MeV) — a technical delivery code, not a management code. Code 77432 describes stereotactic radiation treatment management of cranial lesions (complete course) — used for SRS/Gamma Knife, not for conventionally fractionated radiation. Code 77263 describes complex radiation treatment planning — a planning service, not ongoing treatment management. Management (77427) and delivery (77402/77407/77412) are always reported with separate codes.
7. Which CPT® code is reported for kidney imaging morphology with vascular flow?
   Answer: 78701 CPT® 78701 describes kidney imaging, morphology, with vascular flow — the correct code when renal scintigraphy includes both vascular flow (dynamic images obtained immediately post-injection) and delayed static morphologic images. Code 78700 describes kidney imaging, morphology, static only, without vascular flow; since vascular flow imaging is specifically performed here, 78701 is required. Code 78707 describes kidney imaging with morphology and function, with or without pharmacological intervention — a more comprehensive study that includes both morphology and quantitative function (split renal function, GFR estimation), not just morphology and flow. Code 78710 describes renal SPECT imaging (tomographic), not planar vascular flow imaging. The addition of vascular flow differentiates 78701 from the static-only code 78700.
8. Which CPT® code is reported for FDG-PET brain imaging for metabolic evaluation?
   Answer: 78608 CPT® 78608 describes PET brain imaging, metabolic evaluation — the correct code for FDG (F-18 fluorodeoxyglucose) PET brain imaging used to assess regional cerebral glucose metabolism for the evaluation of dementia, epilepsy, and other neurological conditions. Hypometabolism patterns on FDG-PET help differentiate Alzheimer disease from frontotemporal dementia and Lewy body disease. Code 78609 describes PET brain imaging, perfusion evaluation — used for blood flow assessment (e.g., with N-13 ammonia or O-15 water), not glucose metabolism. Code 78600 describes planar brain imaging (non-PET, conventional nuclear medicine); this is PET imaging. Code 78607 describes SPECT brain imaging; SPECT is a different technology from PET, using different radiopharmaceuticals and providing lower resolution images. FDG-PET brain metabolic imaging is reported with 78608.
9. Which CPT® code is reported for a planar ventilation and perfusion (V/Q) lung scan?
   Answer: 78582 CPT® 78582 describes pulmonary ventilation and perfusion imaging, planar — the correct code for a combined V/Q scan in which both ventilation (aerosol) and perfusion (Tc-99m MAA) planar images are acquired and interpreted together for pulmonary embolism evaluation. Code 78580 describes pulmonary perfusion imaging only (no ventilation component); since both ventilation and perfusion are performed here, 78582 is required. Code 78579 describes pulmonary ventilation imaging only (no perfusion component). Code 78598 describes quantitative differential pulmonary perfusion and ventilation imaging including SPECT acquisition — a more advanced study than standard planar V/Q imaging. When both ventilation and perfusion planar imaging are performed in the same session, a single code (78582) is used rather than reporting 78579 and 78580 separately.
10. Which CPT® code is reported for complex radiation treatment delivery at ≥1 MeV?
    Answer: 77412 CPT® 77412 describes radiation treatment delivery, complex, ≥1 MeV — the correct code for megavoltage radiation delivery when the treatment involves three or more treatment ports, custom blocks or tissue compensators, and complex planning requirements. Code 77402 describes simple radiation treatment delivery (≥1 MeV) for one or two treatment ports with no custom shielding; the multiple-port, compensated field arrangement described here does not qualify as simple. Code 77407 describes intermediate radiation treatment delivery (≥1 MeV) for three or more treatment ports or two ports with custom shielding. Code 77401 describes radiation treatment delivery at superficial or orthovoltage energy (≤250 kV), used for skin lesions; megavoltage (≥1 MeV) energy is used for deep-seated targets. The complexity classification — simple (77402), intermediate (77407), or complex (77412) — is determined by the number of ports, use of custom shielding, and field complexity.
11. Which CPT® code is reported for this whole-body bone scan?
    Answer: 78306 CPT® 78306 describes bone and/or joint imaging, whole body — the correct code for a planar whole-body nuclear medicine bone scan acquired from skull to feet using a bone-seeking radiopharmaceutical such as Tc-99m MDP. Code 78300 describes bone imaging of a limited area (one specific anatomic region, such as the spine or pelvis only); whole-body acquisition requires 78306. Code 78305 describes bone imaging of multiple areas (more than one region but not whole body). Code 78315 describes bone and/or joint imaging with SPECT (tomographic acquisition); planar (not SPECT) images are acquired here. Whole-body (78306) versus limited area (78300) versus multiple areas (78305) is determined by the anatomic coverage; the addition of SPECT tomographic acquisition upgrades the code to 78315.
12. Which CPT® code is reported for hepatobiliary imaging with pharmacologic intervention (sincalide) including quantification of gallbladder ejection fraction?
    Answer: 78227 CPT® 78227 describes hepatobiliary ductal system imaging including gallbladder, with pharmacologic intervention (e.g., sincalide/CCK), with quantification of gallbladder ejection fraction — the correct code when a pharmacologic stimulus is added to the HIDA scan AND gallbladder ejection fraction (GBEF) is measured and reported. Code 78226 describes hepatobiliary ductal system imaging with pharmacologic intervention but WITHOUT quantification of gallbladder ejection fraction; since ejection fraction is measured here, 78227 is required over 78226. Code 78223 describes standard hepatobiliary ductal system imaging without pharmacologic intervention and without quantification. Code 78201 describes liver imaging only (static), without biliary ductal system or gallbladder evaluation. Both pharmacologic intervention and ejection fraction quantification must be documented to support 78227; 78226 applies when sincalide is administered but GBEF is not calculated.
13. Which CPT® code is reported for the complete course of stereotactic cranial radiation treatment management?
    Answer: 77432 CPT® 77432 describes stereotactic radiation treatment management of cranial lesion(s), complete course of treatment — the correct code for the physician's complete management of cranial stereotactic radiosurgery (SRS) or stereotactic radiotherapy (SRT) to intracranial targets, regardless of the number of fractions. Code 77432 is reported once for the entire course, not per fraction. Code 77435 describes stereotactic body radiation therapy (SBRT) treatment management for extracranial targets (lung, liver, spine, prostate) — an extracranial code not applicable to intracranial SRS. Code 77427 describes conventional radiation treatment management per 5 treatments — used for standard fractionated therapy, not for single-session or hypofractionated cranial SRS. Code 77412 describes radiation treatment delivery (complex), a technical delivery code. Cranial SRS/SRT management uses 77432; extracranial SBRT management uses 77435.
14. Which CPT® code is reported for the IMRT treatment planning including dose-volume histograms?
    Answer: 77301 CPT® 77301 describes intensity modulated radiotherapy (IMRT) plan, including dose-volume histograms for target and critical structures — the correct code for comprehensive IMRT treatment planning that uses inverse planning algorithms and computer optimization to generate modulated beam fluences, with DVH generation for plan evaluation. Code 77295 describes preparation of a three-dimensional treatment plan (3D-CRT), which uses forward planning with multiple fixed beams rather than the intensity-modulated inverse planning characteristic of IMRT; IMRT planning requires the dedicated 77301 code. Code 77263 describes complex (non-IMRT) radiation treatment planning; when IMRT is specifically used, 77301 takes precedence. Code 77262 describes intermediate radiation treatment planning. IMRT planning (77301) is a distinct service from 3D-CRT planning (77295) and must be reported separately.
15. Which CPT® code is reported for radiopharmaceutical therapy by oral administration?
    Answer: 79005 CPT® 79005 describes radiopharmaceutical therapy by oral administration — the correct code for I-131 sodium iodide capsule or liquid administered orally for the treatment of hyperthyroidism (Graves disease) or thyroid cancer. Oral I-131 therapy is the most common application of this code. Code 79101 describes radiopharmaceutical therapy by intravenous administration — used for IV radiopharmaceuticals, not oral I-131. Code 78014 describes thyroid imaging with vascular flow and quantitative measurements — a diagnostic imaging study, not a therapy. Code 79440 describes radiopharmaceutical therapy by intra-articular administration (e.g., for inflammatory arthritis). The route of administration — oral (79005), intravenous (79101), intracavitary (79200), interstitial (79300), or intra-articular (79440) — determines the radiopharmaceutical therapy code.
16. Which CPT® code is reported for bone imaging with SPECT acquisition?
    Answer: 78315 CPT® 78315 describes bone and/or joint imaging, SPECT — the correct code for any nuclear medicine bone scan that includes tomographic SPECT acquisition, regardless of the anatomic coverage. SPECT provides three-dimensional volumetric data superior to planar imaging for evaluating pseudoarthrosis and hardware complications. Code 78306 describes whole-body planar bone imaging; planar (not SPECT) imaging is the key difference. Code 78300 describes limited area planar bone imaging — planar technique, not SPECT. Code 78305 describes multiple-area planar bone imaging. When SPECT acquisition is performed as part of a bone scan, 78315 captures the tomographic component; when SPECT/CT is also performed, code 78320 (bone SPECT/CT) would be appropriate.
17. Which CPT® code is reported for remote afterloading HDR intracavitary brachytherapy for 1 to 4 fractions?
    Answer: 77770 CPT® 77770 describes remote afterloading high dose rate (HDR) intracavitary brachytherapy, 1 to 4 fractions — the correct code when HDR brachytherapy is delivered intracavitarily (e.g., cervical, endometrial, or esophageal applicator) using a remote afterloading system for 1 to 4 fractions. Code 77771 describes HDR intracavitary brachytherapy for 5 to 8 fractions; the treatment course described has not reached 5 fractions at the time of reporting. Code 77772 describes HDR intracavitary brachytherapy for more than 8 fractions. Code 77767 describes remote afterloading HDR skin surface brachytherapy (1-4 fractions) — used for superficial skin lesions treated with surface applicators, not for intracavitary placement. Code 77763 describes manual (non-remote afterloading) complex intracavitary brachytherapy using low dose rate sources. The anatomic site (intracavitary vs. skin surface) and fraction count (1-4, 5-8, >8) together select the correct HDR brachytherapy code.
18. Which CPT® code is reported for intraoperative radiation treatment delivery using electrons?
    Answer: 77425 CPT® 77425 describes intraoperative radiation treatment delivery, electrons — the correct code for IORT administered using an electron beam delivered directly to the tumor bed during open surgery. Code 77424 describes intraoperative radiation treatment delivery using x-rays at ≤1 MeV energy (low-energy x-ray IORT, such as the Intrabeam system); electrons are used here, requiring 77425. Code 77469 describes intraoperative radiation treatment management (the physician management component of IORT, reported separately from delivery). Code 77412 describes complex external beam radiation treatment delivery (megavoltage), which is a standard fractionated treatment, not intraoperative radiation. IORT delivery codes distinguish between x-ray (77424) and electron (77425) energy sources; the management of each IORT fraction is separately reported with 77469.
19. Which CPT® code is reported for quantitative differential pulmonary perfusion and ventilation imaging with SPECT acquisition?
    Answer: 78598 CPT® 78598 describes pulmonary ventilation and perfusion imaging (V/Q), quantitative differential, SPECT — the correct code when the V/Q study specifically includes SPECT acquisition AND provides quantitative regional (differential) lung function data (e.g., percentage of total ventilation or perfusion per lung zone), used for presurgical lung function planning or radiotherapy planning. Code 78582 describes planar ventilation and perfusion (V/Q) imaging; when SPECT acquisition and quantitative differential data are required, 78598 is the specific code. Code 78580 describes perfusion-only planar imaging (no ventilation and no SPECT). Code 78579 describes ventilation-only imaging. The distinction between 78582 (standard planar V/Q) and 78598 (quantitative differential V/Q with SPECT) rests on both the acquisition method (SPECT vs. planar) and the level of quantitative analysis (differential quantification vs. standard qualitative interpretation).
20. Which CPT® code is reported for parathyroid SPECT/CT imaging?
    Answer: 78072 CPT® 78072 describes parathyroid planar imaging with SPECT/CT — the correct code for parathyroid scintigraphy that includes SPECT/CT acquisition, providing both functional radionuclide localization and anatomic CT-based correlation in a single session. Code 78070 describes parathyroid planar imaging only (no SPECT or CT); planar images alone are insufficient when SPECT/CT is performed. Code 78071 describes parathyroid planar imaging combined with SPECT (without CT); SPECT/CT (with CT component) requires 78072, which supersedes 78071. Code 78015 describes parathyroid planar imaging only (equivalent to 78070 in some code sets). The addition of CT to SPECT (making SPECT/CT) represents a more complex, anatomically precise study captured by 78072. When SPECT/CT is performed, the SPECT/CT-specific code (78072) is used instead of reporting 78071 plus a separate CT code.

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