Lower Bones (0Q) ICD-10-PCS
The 0Q body system covers Medical and Surgical procedures on lower bones, with 5,842 ICD-10-PCS codes across 17 root operations, 5,808 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 17 operations · 5,842 codes
| Chars 1–3 | Root Operation | Codes | Billable |
|---|---|---|---|
| 0Q2 | ChangeTaking out or off a device from a body part and putting back an identical or similar device in or on the same body part without cutting or puncturing the skin or a mucous membrane | 6 | 4 |
| 0Q5 | DestructionPhysical eradication of all or a portion of a body part by the direct use of energy, force or a destructive agent | 164 | 162 |
| 0Q8 | DivisionCutting into a body part without draining fluids and/or gases from the body part in order to separate or transect a body part | 152 | 150 |
| 0Q9 | DrainageTaking or letting out fluids and/or gases from a body part | 452 | 450 |
| 0QB | ExcisionCutting out or off, without replacement, a portion of a body part | 314 | 312 |
| 0QC | ExtirpationTaking or cutting out solid matter from a body part | 152 | 150 |
| 0QD | ExtractionPulling or stripping out or off all or a portion of a body part by the use of force | 52 | 50 |
| 0QH | 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 | 632 | 630 |
| 0QJ | InspectionVisually and/or manually exploring a body part | 10 | 8 |
| 0QN | ReleaseFreeing a body part from an abnormal physical constraint by cutting or by use of force | 152 | 150 |
| 0QP | RemovalTaking out or off a device from a body part | 868 | 866 |
| 0QQ | RepairRestoring, to the extent possible, a body part to its normal anatomic structure and function | 202 | 200 |
| 0QR | 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 | 452 | 450 |
| 0QS | RepositionMoving to its normal location or other suitable location all or a portion of a body part | 756 | 754 |
| 0QT | ResectionCutting out or off, without replacement, all of a body part | 48 | 46 |
| 0QU | SupplementPutting in or on biological or synthetic material that physically reinforces and/or augments the function of a body part | 452 | 450 |
| 0QW | RevisionCorrecting, to the extent possible, a portion of a malfunctioning device or the position of a displaced device | 978 | 976 |
The info icon shows the official root operation definition and previews the codes in that range.
About the 0Q Body System
The ICD-10-PCS root operation Lower Bones (Character 0Q) refers to various procedures involving surgical actions on bones of the lower extremities. These procedures range from cutting, removing, repairing, to modifying the bones or devices associated with them within the Medical and Surgical section.
This classification covers numerous specific operations, such as Excision (0QB), which entails cutting out a portion of a lower bone without replacement, and Resection (0QT), the cutting out of an entire bone segment. Procedures like Insertion (0QH) involve placing a non-biological device to support physiological function, while Replacement (0QR) refers to implanting biological or synthetic materials to restore bone structure or function. Other examples include Drainage (0Q9) to release fluids, Release (0QN) to free bones from abnormal constraints, and Revision (0QW) for correcting a malfunctioning device. These codes enable precise documentation of diverse surgical interventions on lower bones, ensuring accurate clinical and administrative records.
Questions About This Page
How many codes are in the 0Q body system?
The 0Q body system contains 5,842 ICD-10-PCS codes in FY 2026, organized into 17 root operations. 5,808 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.
