Coding Ahead
CasePilot
Medical Coding Assistant
Case2Code
Search and Code Lookup Tool
RedactPHI
HIPAA-Compliant PHI Redaction
DetectICD10CM
ICD-10-CM Code Detection
Log in Register free account
1 code page views remaining. Guest accounts are limited to 1 page view. Register free account to get 5 more views.
Log in Register free account

Official Description

Pulmonary perfusion imaging (eg, particulate)

© Copyright 2025 American Medical Association. All rights reserved.

Common Language Description

Pulmonary perfusion imaging, as denoted by CPT® Code 78580, is a specialized nuclear imaging study aimed at assessing the perfusion aspect of lung function. This procedure is essential for understanding how well blood circulates through the lung tissues, which is critical for effective gas exchange. The term 'perfusion' specifically refers to the flow of blood through the pulmonary capillaries, which is vital for delivering oxygen to the bloodstream and removing carbon dioxide from it. During this imaging process, a radioactive tracer is utilized to visualize blood flow within the lungs, allowing healthcare professionals to identify any abnormalities or issues related to pulmonary circulation. The procedure involves the injection of a radioactive substance, typically technetium macro aggregated albumin (Tc99m-MAA), through an intravenous catheter, followed by the acquisition of multiple images using a gamma camera. This imaging technique provides valuable insights into the vascular status of the lungs, which can aid in diagnosing various pulmonary conditions. The overall goal of pulmonary perfusion imaging is to enhance the understanding of lung function and assist in the management of patients with respiratory disorders.

© Copyright 2025 Coding Ahead. All rights reserved.

1. Indications

The pulmonary perfusion imaging procedure (CPT® Code 78580) is indicated for various clinical scenarios where assessment of blood flow in the lungs is necessary. The following conditions may warrant this imaging study:

  • Evaluation of Pulmonary Embolism - This imaging is often performed to detect the presence of blood clots in the pulmonary arteries, which can significantly impair blood flow and oxygenation.
  • Assessment of Lung Function - It is utilized to evaluate the perfusion component of lung function, particularly in patients with known or suspected lung diseases.
  • Preoperative Assessment - Pulmonary perfusion imaging may be indicated prior to lung surgery to assess the viability of lung tissue and the risk of postoperative complications.
  • Monitoring of Lung Disease Progression - This imaging can be used to monitor changes in lung perfusion over time in patients with chronic lung conditions.

2. Procedure

The procedure for pulmonary perfusion imaging (CPT® Code 78580) involves several key steps to ensure accurate assessment of lung blood flow. The following outlines the procedural steps:

  • Step 1: Patient Preparation - The patient is prepared for the procedure by explaining the process and ensuring they understand the importance of remaining still during imaging. An intravenous catheter is then placed to facilitate the injection of the radioactive tracer.
  • Step 2: Injection of Radioactive Tracer - A radioactive tracer, typically technetium macro aggregated albumin (Tc99m-MAA), is injected through the intravenous catheter. This tracer is specifically designed to highlight blood flow in the lungs.
  • Step 3: Imaging Acquisition - Following the injection, multiple images of the lungs are obtained using a gamma camera. The camera detects the radiation emitted by the tracer as it circulates through the pulmonary vasculature, allowing for visualization of blood flow patterns.
  • Step 4: Monitoring - Throughout the procedure, the patient is closely monitored to ensure their safety and comfort. Any adverse reactions to the tracer or complications during the imaging process are addressed promptly.
  • Step 5: Image Review and Reporting - After the imaging is completed, the physician reviews the obtained scintigraphic images. A comprehensive written report of the findings is generated, detailing the assessment of pulmonary perfusion and any abnormalities observed.

3. Post-Procedure

After the completion of the pulmonary perfusion imaging procedure, patients are typically monitored for a short period to ensure there are no immediate adverse reactions to the radioactive tracer. Patients may be advised to hydrate adequately to help flush the tracer from their system. The physician will provide a detailed report of the findings, which will be discussed with the patient in a follow-up appointment. It is important for patients to understand any further diagnostic steps or treatments that may be necessary based on the results of the imaging study.

Short Descr LUNG PERFUSION IMAGING
Medium Descr PULMONARY PERFUSION IMAGING PARTICULATE
Long Descr Pulmonary perfusion imaging (eg, particulate)
Status Code Active Code
Global Days XXX - Global Concept Does Not Apply
PC/TC Indicator (26, TC) 1 - Diagnostic Tests for Radiology Services
Multiple Procedures (51) 0 - No payment adjustment rules for multiple procedures apply.
Bilateral Surgery (50) 0 - 150% payment adjustment for bilateral procedures does NOT apply.
Physician Supervisions 09 - Concept does not apply.
Assistant Surgeon (80, 82) 0 - Payment restriction for assistants at surgery applies to this procedure...
Co-Surgeons (62) 0 - Co-surgeons not permitted for this procedure.
Team Surgery (66) 0 - Team surgeons not permitted for this procedure.
Diagnostic Imaging Family 99 - Concept Does Not Apply
APC Status Indicator Procedure or Service, Not Discounted when Multiple
ASC Payment Indicator Radiology service paid separately when provided integral to a surgical procedure on ASC list; payment based on OPPS relative payment weight.
Type of Service (TOS) 4 - Diagnostic Radiology
Berenson-Eggers TOS (BETOS) I1E - Standard imaging - nuclear medicine
MUE 1
CCS Clinical Classification 208 - Radioisotope pulmonary scan
26 Professional component: certain procedures are a combination of a physician or other qualified health care professional component and a technical component. when the physician or other qualified health care professional component is reported separately, the service may be identified by adding modifier 26 to the usual procedure number.
X5 Diagnostic services requested by another clinician: for reporting services by a clinician who furnishes care to the patient only as requested by another clinician or subsequent and related services requested by another clinician; this modifier is reported for patient relationships that may not be adequately captured by the above alternative categories; reporting clinician service examples include but are not limited to, the radiologist's interpretation of an imaging study requested by another clinician
ME The order for this service adheres to appropriate use criteria in the clinical decision support mechanism consulted by the ordering professional
GC This service has been performed in part by a resident under the direction of a teaching physician
MG The order for this service does not have applicable appropriate use criteria in the qualified clinical decision support mechanism consulted by the ordering professional
MH Unknown if ordering professional consulted a clinical decision support mechanism for this service, related information was not provided to the furnishing professional or provider
X4 Episodic/focused services: for reporting services by clinicians who provide focused care on particular types of treatment limited to a defined period and circumstance; the patient has a problem, acute or chronic, that will be treated with surgery, radiation, or some other type of generally time-limited intervention; reporting clinician service examples include but are not limited to, the orthopedic surgeon performing a knee replacement and seeing the patient through the postoperative period
Q6 Service furnished under a fee-for-time compensation arrangement by a substitute physician or by a substitute physical therapist furnishing outpatient physical therapy services in a health professional shortage area, a medically underserved area, or a rural area
GW Service not related to the hospice patient's terminal condition
MA Ordering professional is not required to consult a clinical decision support mechanism due to service being rendered to a patient with a suspected or confirmed emergency medical condition
QQ Ordering professional consulted a qualified clinical decision support mechanism for this service and the related data was provided to the furnishing professional
52 Reduced services: under certain circumstances a service or procedure is partially reduced or eliminated at the discretion of the physician or other qualified health care professional. under these circumstances the service provided can be identified by its usual procedure number and the addition of modifier 52, signifying that the service is reduced. this provides a means of reporting reduced services without disturbing the identification of the basic service. note: for hospital outpatient reporting of a previously scheduled procedure/service that is partially reduced or cancelled as a result of extenuating circumstances or those that threaten the well-being of the patient prior to or after administration of anesthesia, see modifiers 73 and 74 (see modifiers approved for asc hospital outpatient use).
53 Discontinued procedure: under certain circumstances, the physician or other qualified health care professional may elect to terminate a surgical or diagnostic procedure. due to extenuating circumstances or those that threaten the well being of the patient, it may be necessary to indicate that a surgical or diagnostic procedure was started but discontinued. this circumstance may be reported by adding modifier 53 to the code reported by the individual for the discontinued procedure. note: this modifier is not used to report the elective cancellation of a procedure prior to the patient's anesthesia induction and/or surgical preparation in the operating suite. for outpatient hospital/ambulatory surgery center (asc) reporting of a previously scheduled procedure/service that is partially reduced or cancelled as a result of extenuating circumstances or those that threaten the well being of the patient prior to or after administration of anesthesia, see modifiers 73 and 74 (see modifiers approved for asc hospital outpatient use).
59 Distinct procedural service: under certain circumstances, it may be necessary to indicate that a procedure or service was distinct or independent from other non-e/m services performed on the same day. modifier 59 is used to identify procedures/services, other than e/m services, that are not normally reported together, but are appropriate under the circumstances. documentation must support a different session, different procedure or surgery, different site or organ system, separate incision/excision, separate lesion, or separate injury (or area of injury in extensive injuries) not ordinarily encountered or performed on the same day by the same individual. however, when another already established modifier is appropriate it should be used rather than modifier 59. only if no more descriptive modifier is available, and the use of modifier 59 best explains the circumstances, should modifier 59 be used. note: modifier 59 should not be appended to an e/m service. to report a separate and distinct e/m service with a non-e/m service performed on the same date, see modifier 25.
76 Repeat procedure or service by same physician or other qualified health care professional: it may be necessary to indicate that a procedure or service was repeated by the same physician or other qualified health care professional subsequent to the original procedure or service. this circumstance may be reported by adding modifier 76 to the repeated procedure or service. note: this modifier should not be appended to an e/m service.
77 Repeat procedure by another physician or other qualified health care professional: it may be necessary to indicate that a basic procedure or service was repeated by another physician or other qualified health care professional subsequent to the original procedure or service. this circumstance may be reported by adding modifier 77 to the repeated procedure or service. note: this modifier should not be appended to an e/m service.
A6 Dressing for six wounds
AQ Physician providing a service in an unlisted health professional shortage area (hpsa)
CC Procedure code change (use 'cc' when the procedure code submitted was changed either for administrative reasons or because an incorrect code was filed)
CR Catastrophe/disaster related
GV Attending physician not employed or paid under arrangement by the patient's hospice provider
GZ Item or service expected to be denied as not reasonable and necessary
MC Ordering professional is not required to consult a clinical decision support mechanism due to the significant hardship exception of electronic health record or clinical decision support mechanism vendor issues
MF The order for this service does not adhere to the appropriate use criteria in the clinical decision support mechanism consulted by the ordering professional
Q0 Investigational clinical service provided in a clinical research study that is in an approved clinical research study
Q3 Live kidney donor surgery and related services
Q5 Service furnished under a reciprocal billing arrangement by a substitute physician or by a substitute physical therapist furnishing outpatient physical therapy services in a health professional shortage area, a medically underserved area, or a rural area
TC Technical component; under certain circumstances, a charge may be made for the technical component alone; under those circumstances the technical component charge is identified by adding modifier 'tc' to the usual procedure number; technical component charges are institutional charges and not billed separately by physicians; however, portable x-ray suppliers only bill for technical component and should utilize modifier tc; the charge data from portable x-ray suppliers will then be used to build customary and prevailing profiles
XE Separate encounter, a service that is distinct because it occurred during a separate encounter
XP Separate practitioner, a service that is distinct because it was performed by a different practitioner
XU Unusual non-overlapping service, the use of a service that is distinct because it does not overlap usual components of the main service
Date
Action
Notes
2012-01-01 Changed Description Changed
Pre-1990 Added Code added.
Code
Description
Code
Description
Code
Description
Code
Description
CasePilot

Get instant expert-level medical coding assistance.

Ask about:
CPT Codes Guidelines Modifiers Crosswalks NCCI Edits Compliance Medicare Coverage
Example: "What is CPT code 99213?" or "Guidelines for E/M services"