Heart and Great Vessels (02) ICD-10-PCS
The 02 body system covers Medical and Surgical procedures on heart and great vessels, with 6,197 ICD-10-PCS codes across 22 root operations, 6,153 of them billable in fiscal year 2026. Each root operation defines a distinct procedural objective, and the info icons show the official definition with a preview of the codes inside.
Root Operations in This Body System 22 operations · 6,197 codes
| Chars 1–3 | Root Operation | Codes | Billable |
|---|---|---|---|
| 021 | BypassAltering the route of passage of the contents of a tubular body part | 1,698 | 1,696 |
| 024 | CreationMaking a new genital structure that does not take over the function of a body part | 26 | 24 |
| 025 | DestructionPhysical eradication of all or a portion of a body part by the direct use of energy, force or a destructive agent | 148 | 146 |
| 027 | DilationExpanding an orifice or the lumen of a tubular body part | 752 | 750 |
| 028 | DivisionCutting into a body part without draining fluids and/or gases from the body part in order to separate or transect a body part | 20 | 18 |
| 02B | ExcisionCutting out or off, without replacement, a portion of a body part | 284 | 282 |
| 02C | ExtirpationTaking or cutting out solid matter from a body part | 196 | 194 |
| 02F | FragmentationBreaking solid matter in a body part into pieces | 38 | 36 |
| 02H | InsertionPutting in a non-biological appliance that monitors, assists, performs or prevents a physiological function but does not physically take the place of a body part | 622 | 620 |
| 02J | InspectionVisually and/or manually exploring a body part | 14 | 12 |
| 02K | MapLocating the route of passage of electrical impulses and/or locating functional areas in a body part | 8 | 6 |
| 02L | OcclusionCompletely closing an orifice or the lumen of a tubular body part | 168 | 166 |
| 02N | ReleaseFreeing a body part from an abnormal physical constraint by cutting or by use of force | 164 | 162 |
| 02P | RemovalTaking out or off a device from a body part | 156 | 154 |
| 02Q | RepairRestoring, to the extent possible, a body part to its normal anatomic structure and function | 200 | 198 |
| 02R | ReplacementPutting in or on biological or synthetic material that physically takes the place and/or function of all or a portion of a body part | 416 | 414 |
| 02S | RepositionMoving to its normal location or other suitable location all or a portion of a body part | 22 | 20 |
| 02T | ResectionCutting out or off, without replacement, all of a body part | 44 | 42 |
| 02U | SupplementPutting in or on biological or synthetic material that physically reinforces and/or augments the function of a body part | 701 | 699 |
| 02V | RestrictionPartially closing an orifice or the lumen of a tubular body part | 224 | 222 |
| 02W | RevisionCorrecting, to the extent possible, a portion of a malfunctioning device or the position of a displaced device | 288 | 286 |
| 02Y | TransplantationPutting in or on all or a portion of a living body part taken from another individual or animal to physically take the place and/or function of all or a portion of a similar body part | 8 | 6 |
The info icon shows the official root operation definition and previews the codes in that range.
About the 02 Body System
The ICD-10-PCS classification for the Heart and Great Vessels includes a variety of root operations used to describe procedures on this critical body system. These root operations define specific actions taken on anatomical structures to treat cardiovascular conditions.
For example, Bypass (code 021) involves altering the route of blood flow through a tubular vessel, commonly used in coronary artery bypass grafting. Dilation (code 027) expands the lumen of a vessel, such as balloon angioplasty. Insertion (code 02H) refers to placing devices like pacemakers that assist or regulate heart function without replacing the organ itself. Surgical removal of solid matter, like a clot, utilizes Extirpation (code 02C), while Replacement (code 02R) involves putting in biological or synthetic material to replace a portion of the heart or vessels, such as valve replacement. Additionally, Inspection (code 02J) allows manual or visual exploration for diagnosis. These precise root operations help accurately document interventions on the heart and great vessels in the Medical and Surgical section of ICD-10-PCS.
Questions About This Page
How many codes are in the 02 body system?
The 02 body system contains 6,197 ICD-10-PCS codes in FY 2026, organized into 22 root operations. 6,153 of them are billable on inpatient claims.
What is a root operation?
The root operation is the third character of every ICD-10-PCS code and names the objective of the procedure. Drainage takes fluid out, Excision cuts out a portion of a body part, and Resection removes all of one. Picking the right root operation is the central skill of PCS coding, so each one above carries its official CMS definition.
Related References
Source: CMS FY 2026 ICD-10-PCS order file and code tables, effective October 1, 2025 through September 30, 2026.
