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Official Description

Arterial puncture, withdrawal of blood for diagnosis

© Copyright 2026 American Medical Association. All rights reserved.

Common Language Description

The procedure described by CPT® Code 36600 refers to an arterial puncture performed for the purpose of withdrawing blood for diagnostic testing. This procedure is typically conducted on the radial artery, which is the most frequently used site due to its accessibility and the ease of obtaining blood samples. However, alternative sites such as the axillary and femoral arteries may also be utilized depending on the clinical situation or patient anatomy. Prior to the puncture, the skin over the selected artery is meticulously prepared to ensure a sterile environment, minimizing the risk of infection. The healthcare provider then carefully punctures the artery with a needle to collect the required blood samples, which are essential for various laboratory analyses. After the blood is drawn, the needle is withdrawn, and pressure is applied to the puncture site to control any bleeding and promote hemostasis. This procedure is crucial for obtaining accurate diagnostic information that can guide further medical decision-making.

© Copyright 2026 Coding Ahead. All rights reserved.

1. Indications

Arterial puncture for blood withdrawal is indicated in various clinical scenarios where diagnostic information is required. The following conditions may warrant this procedure:

  • Diagnostic Testing Blood samples are often needed for laboratory tests to assess various health conditions, including metabolic disorders, infections, and organ function.
  • Monitoring Blood Gases This procedure is essential for obtaining arterial blood gases (ABGs), which provide critical information about a patient's oxygenation, carbon dioxide levels, and acid-base balance.
  • Assessment of Circulatory Status Arterial blood withdrawal can help evaluate the perfusion and circulatory status of a patient, particularly in emergency situations.

2. Procedure

The procedure for arterial puncture involves several key steps to ensure safety and accuracy in blood collection. Each step is critical to the overall success of the procedure.

  • Step 1: Site Selection The healthcare provider begins by selecting the appropriate site for the arterial puncture, typically the radial artery. The choice of site may depend on the patient's condition and the provider's assessment of accessibility and safety.
  • Step 2: Skin Preparation Once the site is selected, the skin over the puncture site is cleaned and prepared using antiseptic solutions to create a sterile field. This step is vital to prevent infection and ensure the integrity of the blood sample.
  • Step 3: Arterial Puncture The provider then carefully inserts a sterile needle into the selected artery at the appropriate angle. The needle is advanced until blood is seen in the hub, indicating successful puncture. The necessary amount of blood is then drawn into the collection device.
  • Step 4: Needle Withdrawal After the required blood volume is obtained, the needle is withdrawn promptly from the artery. This step must be performed with care to minimize trauma to the vessel.
  • Step 5: Hemostasis Following the withdrawal of the needle, pressure is applied to the puncture site using sterile gauze or a similar material. This is crucial to control any bleeding and promote clotting at the site of the puncture.

3. Post-Procedure

After the arterial puncture, the patient should be monitored for any signs of complications, such as excessive bleeding, hematoma formation, or signs of infection at the puncture site. The provider may instruct the patient to keep the site clean and dry and to avoid strenuous activities for a short period to ensure proper healing. Follow-up may be necessary to assess the site and review the results of the laboratory tests performed on the collected blood samples.

Short Descr WITHDRAWAL OF ARTERIAL BLOOD
Medium Descr ARTERIAL PUNCTURE WITHDRAWAL BLOOD DX
Long Descr Arterial puncture, withdrawal of blood for diagnosis
Status Code Active Code
Global Days XXX - Global Concept Does Not Apply
PC/TC Indicator (26, TC) 0 - Physician Service Code
Multiple Procedures (51) 2 - Standard 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) 1 - Statutory 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 STV-Packaged Codes
ASC Payment Indicator Packaged service/item; no separate payment made.
Type of Service (TOS) 2 - Surgery
Berenson-Eggers TOS (BETOS) P6C - Minor procedures - other (Medicare fee schedule)
MUE 4
CCS Clinical Classification 231 - Other therapeutic procedures
51 Multiple procedures: when multiple procedures, other than e/m services, physical medicine and rehabilitation services or provision of supplies (eg, vaccines), are performed at the same session by the same individual, the primary procedure or service may be reported as listed. the additional procedure(s) or service(s) may be identified by appending modifier 51 to the additional procedure or service code(s). note: this modifier should not be appended to designated "add-on" codes (see appendix d).
XU Unusual non-overlapping service, the use of a service that is distinct because it does not overlap usual components of the main service
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.
GW Service not related to the hospice patient's terminal condition
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).
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.
CR Catastrophe/disaster related
GC This service has been performed in part by a resident under the direction of a teaching physician
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
LT Left side (used to identify procedures performed on the left side of the body)
PD Diagnostic or related non diagnostic item or service provided in a wholly owned or operated entity to a patient who is admitted as an inpatient within 3 days
Q1 Routine clinical service provided in a clinical research study that is in an approved clinical research study
RT Right side (used to identify procedures performed on the right side of the body)
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
XE Separate encounter, a service that is distinct because it occurred during a separate encounter
XS Separate structure, a service that is distinct because it was performed on a separate organ/structure
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