CPT 56605: Arthroscopic Lysis of Soft Tissue Adhesions - Single Joint

CPT 56605 reports arthroscopic lysis of soft-tissue adhesions (arthrofibrosis) in a single joint.

Clinical Indications

• Post-traumatic or post-surgical stiffness (knee, shoulder, elbow, ankle)
• Loss of motion >20–30° from expected despite ≥3–6 months PT
• Arthrofibrosis after ACLR, TKA, rotator cuff repair, fracture fixation

Procedure

1. Diagnostic arthroscopy to assess adhesion location/extent.
2. Motorized shaver, radiofrequency wand, or electrocautery to resect fibrous bands.
3. Targeted releases: anterior interval, medial/lateral gutters, suprapatellar pouch (knee); rotator interval, subscapularis, posterior capsule (shoulder).
4. Dynamic intraoperative assessment of ROM.
5. Post-op: CPM, aggressive PT, anti-inflammatories, sometimes radiation (recurrent knee).

Coding Nuances

• Single joint only. Multiple joints → separate codes with modifier 59.
• Includes diagnostic arthroscopy (do not bill 29870/29805 separately).
• Excludes hardware removal, meniscectomy, chondroplasty, ligament reconstruction—bill separately if performed.
• Not for open arthrolysis (use open codes, e.g., 27485 knee).

Documentation

• Pre-op ROM measurements (flexion/extension/rotation)
• Adhesion location, density, extent
• Structures released, instruments used
• Post-op ROM achieved
• PT protocol

Outcomes

Knee: 70–85% gain functional ROM; shoulder: 80% satisfaction. Recurrence 10–20%.

56605 is a focused arthroscopic code for adhesive capsulitis/arthrofibrosis release.