Arthrocentesis is injection and/or aspiration of a joint and is a commonly used treatment for joint conditions (Figures 8-1 and 8-2). A needle is inserted into the joint to anesthetize it. Drugs such as Depo-Medrol (synthetic glucocorticoid) or cortisone can then be injected into the joint, or fluid can be withdrawn. Bundled into the arthrocentesis are the dual services of injection and aspiration. For example, 20610 is reported when a physician withdraws fluid from the knee joint and then injects Depo-Medrol into the knee joint. The drug injected would be reported separately with a HCPCS code. HCPCS J code (drug code) descriptions identify the drug by the generic name, not the brand name. When reporting the drug with a HCPCS code, it is necessary to translate the brand name into the generic name; this is when the cross-reference feature of the Table of Drugs will be useful. For example, if the medical record indicates a Depo-Medrol injection, the Table of Drugs entry for Depo-Medrol (brand name) refers you to the generic name of the drug, methylprednisolone acetate (J1020-J1040). A current medical drug reference is also often necessary to translate brand names into the generic names to locate the drug in the HCPCS manual. One sheath, origin/insert, or muscle injected, report one injection code. Multiple sheaths, origins/insertions, or muscle sites injected, report multiple injection codes.
Musculoskeletal system
Arthrocentesis