Summary & Overview
CPT 29886: Arthroscopic Knee Cartilage Drilling for Osteochondritis Dissecans
CPT code 29886 covers arthroscopic treatment for intact osteochondritis dissecans lesions of the knee, where the surgeon inspects the joint and performs drilling of cracked but not separated cartilage to stimulate healing. This minimally invasive procedure addresses pain and impaired mobility and is a recognized joint-preserving option that can reduce progression to more extensive surgical repairs. Nationally, the code is relevant to surgical orthopedics, outpatient surgical centers, and payer coverage policies that determine access to arthroscopic cartilage-restoring interventions.
Key payers discussed include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find a concise overview of clinical indications and typical settings for the service, payer coverage considerations, common modifiers used with the code, and benchmarking context where available. The publication summarizes how CPT code 29886 fits into care pathways for osteochondritis dissecans of the knee and how coverage policy and site-of-service choices influence utilization and access. Data not available in the input is clearly noted where applicable.
Billing Code Overview
CPT code 29886 describes an arthroscopic procedure in which the surgeon inspects the interior of the knee joint to identify intact osteochondritis dissecans lesions — areas where the cartilage is cracked but not fully separated from the underlying bone. The surgeon performs drilling of the damaged cartilage to stimulate healing and encourage growth of healthy tissue, a technique intended to relieve pain and improve joint mobility.
Service type: Arthroscopic knee procedure, cartilage drilling for osteochondritis dissecans
Typical site of service: Hospital outpatient department or ambulatory surgery center, performed under arthroscopy with the patient in an operative setting.
Clinical & Coding Specifications
Clinical Context
A 16-year-old adolescent presents with several months of activity-related right knee pain, intermittent swelling, and mechanical symptoms after a twisting injury while playing soccer. Physical exam shows joint line tenderness and a small effusion; weightbearing radiographs are inconclusive. MRI demonstrates an osteochondritis dissecans (OCD) lesion of the lateral femoral condyle with intact but fissured articular cartilage and subchondral bone changes. The orthopedic surgeon schedules an arthroscopic procedure for diagnostic evaluation and retrograde/antegrade drilling of the lesion to promote revascularization and healing of the osteochondral unit.
The clinical workflow includes preoperative assessment (history, focused knee exam, imaging review), informed consent discussing risks/benefits, intraoperative diagnostic arthroscopy to confirm lesion stability, lesion drilling using arthroscopic guidance (29886), appropriate hemostasis and lavage, and routine postoperative orders (analgesia, DVT prophylaxis as indicated, physical therapy referral with protected weightbearing). Typical follow-up visits include wound check at 10–14 days and serial clinical and radiographic/MRI assessments over 3–12 months to document healing and guide return-to-sport progression.
Coding Specifications
| Modifier | Description | When to Use |
|---|---|---|
26 | Professional component |