Lower Joints (0S) ICD-10-PCS
The 0S body system covers Medical and Surgical procedures on lower joints, with 3,413 ICD-10-PCS codes across 16 root operations, 3,397 of them billable in fiscal year 2027. 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 16 operations · 3,413 codes
| Chars 1–3 | Root Operation | Codes | Billable |
|---|---|---|---|
| 0S2 | 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 | 3 | 2 |
| 0S5 | DestructionPhysical eradication of all or a portion of a body part by the direct use of energy, force or a destructive agent | 67 | 66 |
| 0S9 | DrainageTaking or letting out fluids and/or gases from a body part | 199 | 198 |
| 0SB | ExcisionCutting out or off, without replacement, a portion of a body part | 133 | 132 |
| 0SC | ExtirpationTaking or cutting out solid matter from a body part | 67 | 66 |
| 0SG | FusionJoining together portions of an articular body part rendering the articular body part immobile | 406 | 405 |
| 0SH | 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 | 253 | 252 |
| 0SJ | InspectionVisually and/or manually exploring a body part | 89 | 88 |
| 0SN | ReleaseFreeing a body part from an abnormal physical constraint by cutting or by use of force | 89 | 88 |
| 0SP | RemovalTaking out or off a device from a body part | 635 | 634 |
| 0SQ | RepairRestoring, to the extent possible, a body part to its normal anatomic structure and function | 89 | 88 |
| 0SR | 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 | 215 | 214 |
| 0SS | RepositionMoving to its normal location or other suitable location all or a portion of a body part | 217 | 216 |
| 0ST | ResectionCutting out or off, without replacement, all of a body part | 21 | 20 |
| 0SU | SupplementPutting in or on biological or synthetic material that physically reinforces and/or augments the function of a body part | 219 | 218 |
| 0SW | RevisionCorrecting, to the extent possible, a portion of a malfunctioning device or the position of a displaced device | 711 | 710 |
The info icon shows the official root operation definition and previews the codes in that range.
About the 0S Body System
These codes cover procedures on lower joints, including the hip, knee, ankle, foot joints, and joints and discs of the lower spine. The body-part character distinguishes specific sites, including right and left joints and certain hip and knee joint surfaces.
Some procedures remove part or all of a body part, take out solid matter, drain fluid or gas, or destroy tissue. Others join a joint so it cannot move, move a body part into position, free it from a physical constraint, or restore its structure. Device procedures include putting in, replacing, reinforcing, changing, removing, or correcting a device or material. The tables also include visual or manual inspection of a joint.
FY 2027 changes: The FY 2027 ICD-10-PCS update, effective October 1, 2026, added 18 codes in this body system. Table with changes: 0SG Fusion.
Questions About This Page
How many codes are in the 0S body system?
The 0S body system contains 3,413 ICD-10-PCS codes in FY 2027, organized into 16 root operations. 3,397 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 2027 ICD-10-PCS order file and code tables, effective October 1, 2026 through September 30, 2027.
