2007 ICD-9-CM Procedure 81.91 Arthrocentesis 81.91 is a specific code that can be used to specify a procedure 81.91 contains 4 index entries View the full Volume 3 81.* hierarchy 81.91 also known as: Joint aspiration 81.91 excludes: that for: arthrography (88.32) biopsy of joint structure 80.30-80.39) injection of drug (81.92) Index entries containing 81.91: Arthrocentesis 81.91 for arthrography -- see Arthrogram Aspiration joint 81.91 for arthrography -- see Arthrogram Puncture joint 81.91 Tap joint 81.91