2025 ICD-10-PCS Procedure Code 021749Q

021749Q PCS Table

In an PCS table each code is represented by up seven alphanumeric characters, with each character in the table respresenting different aspects of the procedure. In the table provided below, each row represents an individual character and includes information about the character's position, designation, label, and procedure notes. For this PCS table the procedure code is in the medical and surgical section and is part of the heart and great vessels body system, classified under bypass operation. The applicable bodypart for this procedure code is atrium, left.

Clinical Classification

MS-DRG Mapping for ICD-10-PCS Code 021749Q

ICD-10-PCS procedure codes are grouped into Medicare Severity Diagnosis Related Groups (MS-DRGs) to support consistent hospital reimbursement and care planning. MS-DRGs classify inpatient stays based on clinical similarity and expected resource use, using information such as the primary procedure, secondary diagnoses, and patient condition.

Each hospital stay is assigned a single DRG, which determines a fixed payment rate from Medicare. This rate accounts for the complexity of the procedure and the overall cost of care.

The code 021749Q maps to the following MS-DRGs in version V42.0, effective from October 1, 2024, through September 30, 2025. These groupings are key to understanding how the procedure impacts billing and hospital resource allocation.

Convert to ICD-9-PCS

Below are the ICD-9=PCS code(s) that most closely match this ICD-10-PCS code, based on the General Equivalence Mappings (GEMs). This ICD-10-PCS to ICD-9-PCS crosswalk tool is helpful for coders who need to reference legacy diagnosis codes for audits, historical claims, or approximate code comparisons.

Other ICD-10-PCS Codes Used for Bypass Atrium, Left

Filter related codes list:

• 021708P Bypass Left Atrium to Pulmonary Trunk with Zooplastic Tissue, Open Approach

• 021708Q Bypass Left Atrium to Right Pulmonary Artery with Zooplastic Tissue, Open Approach

• 021708R Bypass Left Atrium to Left Pulmonary Artery with Zooplastic Tissue, Open Approach

• 021708S Bypass Left Atrium to Right Pulmonary Vein with Zooplastic Tissue, Open Approach

• 021708T Bypass Left Atrium to Left Pulmonary Vein with Zooplastic Tissue, Open Approach

• 021708U Bypass Left Atrium to Pulmonary Vein Confluence with Zooplastic Tissue, Open Approach

• 021709P Bypass Left Atrium to Pulmonary Trunk with Autologous Venous Tissue, Open Approach

• 021709Q Bypass Left Atrium to Right Pulmonary Artery with Autologous Venous Tissue, Open Approach

• 021709R Bypass Left Atrium to Left Pulmonary Artery with Autologous Venous Tissue, Open Approach

• 021709S Bypass Left Atrium to Right Pulmonary Vein with Autologous Venous Tissue, Open Approach

• 021709T Bypass Left Atrium to Left Pulmonary Vein with Autologous Venous Tissue, Open Approach

• 021709U Bypass Left Atrium to Pulmonary Vein Confluence with Autologous Venous Tissue, Open Approach

• 02170AP Bypass Left Atrium to Pulmonary Trunk with Autologous Arterial Tissue, Open Approach

• 02170AQ Bypass Left Atrium to Right Pulmonary Artery with Autologous Arterial Tissue, Open Approach

• 02170AR Bypass Left Atrium to Left Pulmonary Artery with Autologous Arterial Tissue, Open Approach

• 02170AS Bypass Left Atrium to Right Pulmonary Vein with Autologous Arterial Tissue, Open Approach

• 02170AT Bypass Left Atrium to Left Pulmonary Vein with Autologous Arterial Tissue, Open Approach

• 02170AU Bypass Left Atrium to Pulmonary Vein Confluence with Autologous Arterial Tissue, Open Approach

• 02170JP Bypass Left Atrium to Pulmonary Trunk with Synthetic Substitute, Open Approach

• 02170JQ Bypass Left Atrium to Right Pulmonary Artery with Synthetic Substitute, Open Approach

• 02170JR Bypass Left Atrium to Left Pulmonary Artery with Synthetic Substitute, Open Approach

• 02170JS Bypass Left Atrium to Right Pulmonary Vein with Synthetic Substitute, Open Approach

• 02170JT Bypass Left Atrium to Left Pulmonary Vein with Synthetic Substitute, Open Approach

• 02170JU Bypass Left Atrium to Pulmonary Vein Confluence with Synthetic Substitute, Open Approach

• 02170KP Bypass Left Atrium to Pulmonary Trunk with Nonautologous Tissue Substitute, Open Approach

• 02170KQ Bypass Left Atrium to Right Pulmonary Artery with Nonautologous Tissue Substitute, Open Approach

• 02170KR Bypass Left Atrium to Left Pulmonary Artery with Nonautologous Tissue Substitute, Open Approach

• 02170KS Bypass Left Atrium to Right Pulmonary Vein with Nonautologous Tissue Substitute, Open Approach

• 02170KT Bypass Left Atrium to Left Pulmonary Vein with Nonautologous Tissue Substitute, Open Approach

• 02170KU Bypass Left Atrium to Pulmonary Vein Confluence with Nonautologous Tissue Substitute, Open Approach

• 02170ZP Bypass Left Atrium to Pulmonary Trunk, Open Approach

• 02170ZQ Bypass Left Atrium to Right Pulmonary Artery, Open Approach

• 02170ZR Bypass Left Atrium to Left Pulmonary Artery, Open Approach

• 02170ZS Bypass Left Atrium to Right Pulmonary Vein, Open Approach

• 02170ZT Bypass Left Atrium to Left Pulmonary Vein, Open Approach

• 02170ZU Bypass Left Atrium to Pulmonary Vein Confluence, Open Approach

• 02173J6 Bypass Left Atrium to Right Atrium with Synthetic Substitute, Percutaneous Approach

• 021748P Bypass Left Atrium to Pulmonary Trunk with Zooplastic Tissue, Percutaneous Endoscopic Approach

• 021748Q Bypass Left Atrium to Right Pulmonary Artery with Zooplastic Tissue, Percutaneous Endoscopic Approach

• 021748R Bypass Left Atrium to Left Pulmonary Artery with Zooplastic Tissue, Percutaneous Endoscopic Approach

• 021748S Bypass Left Atrium to Right Pulmonary Vein with Zooplastic Tissue, Percutaneous Endoscopic Approach

• 021748T Bypass Left Atrium to Left Pulmonary Vein with Zooplastic Tissue, Percutaneous Endoscopic Approach

• 021748U Bypass Left Atrium to Pulmonary Vein Confluence with Zooplastic Tissue, Percutaneous Endoscopic Approach

• 021749P Bypass Left Atrium to Pulmonary Trunk with Autologous Venous Tissue, Percutaneous Endoscopic Approach

• 021749R Bypass Left Atrium to Left Pulmonary Artery with Autologous Venous Tissue, Percutaneous Endoscopic Approach

• 021749S Bypass Left Atrium to Right Pulmonary Vein with Autologous Venous Tissue, Percutaneous Endoscopic Approach

• 021749T Bypass Left Atrium to Left Pulmonary Vein with Autologous Venous Tissue, Percutaneous Endoscopic Approach

• 021749U Bypass Left Atrium to Pulmonary Vein Confluence with Autologous Venous Tissue, Percutaneous Endoscopic Approach

• 02174AP Bypass Left Atrium to Pulmonary Trunk with Autologous Arterial Tissue, Percutaneous Endoscopic Approach

• 02174AQ Bypass Left Atrium to Right Pulmonary Artery with Autologous Arterial Tissue, Percutaneous Endoscopic Approach

• 02174AR Bypass Left Atrium to Left Pulmonary Artery with Autologous Arterial Tissue, Percutaneous Endoscopic Approach

• 02174AS Bypass Left Atrium to Right Pulmonary Vein with Autologous Arterial Tissue, Percutaneous Endoscopic Approach

• 02174AT Bypass Left Atrium to Left Pulmonary Vein with Autologous Arterial Tissue, Percutaneous Endoscopic Approach

• 02174AU Bypass Left Atrium to Pulmonary Vein Confluence with Autologous Arterial Tissue, Percutaneous Endoscopic Approach

• 02174JP Bypass Left Atrium to Pulmonary Trunk with Synthetic Substitute, Percutaneous Endoscopic Approach

• 02174JQ Bypass Left Atrium to Right Pulmonary Artery with Synthetic Substitute, Percutaneous Endoscopic Approach

• 02174JR Bypass Left Atrium to Left Pulmonary Artery with Synthetic Substitute, Percutaneous Endoscopic Approach

• 02174JS Bypass Left Atrium to Right Pulmonary Vein with Synthetic Substitute, Percutaneous Endoscopic Approach

• 02174JT Bypass Left Atrium to Left Pulmonary Vein with Synthetic Substitute, Percutaneous Endoscopic Approach

• 02174JU Bypass Left Atrium to Pulmonary Vein Confluence with Synthetic Substitute, Percutaneous Endoscopic Approach

• 02174KP Bypass Left Atrium to Pulmonary Trunk with Nonautologous Tissue Substitute, Percutaneous Endoscopic Approach

• 02174KQ Bypass Left Atrium to Right Pulmonary Artery with Nonautologous Tissue Substitute, Percutaneous Endoscopic Approach

• 02174KR Bypass Left Atrium to Left Pulmonary Artery with Nonautologous Tissue Substitute, Percutaneous Endoscopic Approach

• 02174KS Bypass Left Atrium to Right Pulmonary Vein with Nonautologous Tissue Substitute, Percutaneous Endoscopic Approach

• 02174KT Bypass Left Atrium to Left Pulmonary Vein with Nonautologous Tissue Substitute, Percutaneous Endoscopic Approach

• 02174KU Bypass Left Atrium to Pulmonary Vein Confluence with Nonautologous Tissue Substitute, Percutaneous Endoscopic Approach

• 02174ZP Bypass Left Atrium to Pulmonary Trunk, Percutaneous Endoscopic Approach

• 02174ZQ Bypass Left Atrium to Right Pulmonary Artery, Percutaneous Endoscopic Approach

• 02174ZR Bypass Left Atrium to Left Pulmonary Artery, Percutaneous Endoscopic Approach

• 02174ZS Bypass Left Atrium to Right Pulmonary Vein, Percutaneous Endoscopic Approach

• 02174ZT Bypass Left Atrium to Left Pulmonary Vein, Percutaneous Endoscopic Approach

• 02174ZU Bypass Left Atrium to Pulmonary Vein Confluence, Percutaneous Endoscopic Approach

What is ICD-10-PCS?

The ICD-10 Procedure Coding System (ICD-10-PCS) is a catalog of procedural codes used by medical professionals for hospital inpatient healthcare settings. The Centers for Medicare and Medicaid Services (CMS) maintain the catalog in the U.S. releasing yearly updates. The 2025 ICD-10-PCS codes are to be used for discharges occurring from October 1, 2024 through September 30, 2025.

Each ICD-10-PCS code has a structure of seven alphanumeric characters and contains no decimals. The first character defines the major "section". Depending on the "section" the second through seventh characters mean different things.