Summary & Overview
CPT 0565T: Autologous Fat Harvest and Cellular Implant for Knee Injection
CPT code 0565T represents an autologous procedure that harvests a patient’s fat tissue, processes it into a cellular implant, and prepares it for injection into the patient’s knee joint. The code captures a combined service focused on biologic preparation and intended intra-articular administration. Nationally, this code is relevant as interest in cell-based orthobiologic therapies and their distinct billing pathways has grown, raising questions about coverage policy, coding clarity, and clinical evidence standards.
Key payers in this analysis include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find a concise briefing on the clinical context of the procedure, typical sites of service, and how the code is used in practice. The publication also summarizes available benchmarks for utilization and reimbursement, outlines common documentation and coding considerations, and highlights recent policy developments that affect coverage and payment for autologous cellular knee implant procedures. This resource is intended to inform payers, providers, and policy analysts about coding application, service characterization, and the issues shaping reimbursement and access for this emerging orthobiologic service.
Billing Code Overview
CPT code 0565T describes the harvesting (removal) of fat tissue and the creation of a cellular implant derived from that tissue for injection into the same patient’s knee joint. This procedure involves autologous fat harvest, processing to create a cellular implant, and preparation for intra-articular injection.
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Service type: Surgical/autologous cellular therapy procedure
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Typical site of service: Ambulatory surgical center or hospital outpatient setting
Clinical & Coding Specifications
Clinical Context
A 58-year-old patient with symptomatic, degenerative osteoarthritis of the knee refractory to conservative measures (physical therapy, NSAIDs, intra-articular corticosteroid or hyaluronic acid injections) presents for autologous adipose-derived cellular implantation. The clinical workflow includes pre-procedure evaluation and informed consent, outpatient tumescent liposuction under local anesthesia or monitored anesthesia care to harvest subcutaneous fat (typically from the abdomen or flank), processing of the harvested adipose tissue to create a cellular implant, and image-guided intra-articular injection into the affected knee joint during the same encounter. Post-procedure monitoring occurs in the ambulatory surgery center or hospital outpatient setting; discharge with activity precautions and follow-up to assess pain, function, and potential adverse events (infection, bleeding, thromboembolism, or joint effusion).
Coding Specifications
| Modifier | Description | When to Use |
|---|---|---|
22 | Increased procedural services | Use when the work required is substantially greater than typically required for 0565T and documentation supports unusual time, technical difficulty, or severity |
23 | Unusual anesthesia | Use when general anesthesia is medically necessary for 0565T and not normally expected for this outpatient procedure |
51 | Multiple procedures | Use when 0565T is billed with other distinct procedures on the same date by the same provider |
52 | Reduced services | Use when the service is partially reduced or not completed but still performed |
53 | Discontinued procedure | Use when the procedure was started but stopped for reasons unrelated to patient choice |
62 | Two surgeons | Use when two surgeons with different specialties perform distinct portions of the procedure |
66 | Surgical team | Use when a surgical team with multiple surgeons performs the procedure |
78 | Return to the operating room for a related procedure during the global period | Use when a subsequent unplanned OR procedure related to the initial 0565T occurs |
80 | Assistant surgeon | Use when an assistant surgeon provides intraoperative assistance |
AS | Ambulatory surgery center (facility) | Use to designate the facility as an ASC when required by payors |
QK | Medical direction of two or more assistants | Use when the physician medically directs qualified assistants for the procedure |
QX | Service furnished with assistant surgeon (collaborating) | Use when a certified assistant performs services as required by payor policy |
QY | Medical director (not individual) | Use when the physician serves as a medical director for certified assistants |
| Taxonomy Code | Specialty | Notes |
|---|---|---|
| 207LH0000X | Orthopaedic Surgery | Orthopedic surgeons frequently manage knee osteoarthritis and perform intra-articular procedures |
| 208000000X | Physical Medicine & Rehabilitation | Physiatrists manage nonoperative musculoskeletal care and may perform image-guided injections |
| 364A00000X | Vascular Surgery / Interventional Radiology (Interventional) | Interventional radiologists may perform image-guided joint injection and adipose harvest in some settings |
| 101YA0400X | Plastic Surgery | Plastic surgeons perform liposuction and adipose tissue processing |
| 371K00000X | General Surgery | General surgeons may be involved in adipose harvest and processing in multidisciplinary programs |
Related Diagnoses
| ICD-10 Code | Description | Clinical Relevance |
|---|---|---|
M17.0 | Bilateral primary osteoarthritis of knee | Primary indication for joint cellular implantation in degenerative disease affecting both knees |
M17.11 | Unilateral primary osteoarthritis, right knee | Common single-knee indication for biologic cellular implantation |
M17.12 | Unilateral primary osteoarthritis, left knee | Common single-knee indication for biologic cellular implantation |
M17.9 | Osteoarthritis of knee, unspecified | Used when laterality or type is unspecified but osteoarthritis is the indication |
M23.21 | Derangement of meniscus due to old tear or injury, right knee | Degenerative meniscal pathology with persistent symptoms may be an indication adjunctive to cellular therapy |
M22.9 | Internal derangement of knee, unspecified | Used when internal derangement contributes to symptomatic joint disease |
M75.5 | Bursitis of knee | Coexisting periarticular inflammatory conditions may be documented when present |
M25.561 | Pain in right knee | Symptom code commonly reported in conjunction with definitive knee pathology |
Related CPT Codes
| CPT Code | Description | Relationship to This Procedure |
|---|---|---|
0570T | Processing of autologous adipose tissue for implantation, quantification/characterization (if applicable) | May be billed for additional or specific processing steps separate from harvest/creation in 0565T when defined by payer policy |
20610 | Arthrocentesis, aspiration and/or injection, major joint or bursa (e.g., knee) | Alternative code for simple intra-articular injections; may be used when processed cellular implant is not used |
15876 | Suction assisted lipectomy, trunk | May describe the adipose harvesting procedure when significant liposuction beyond small-volume aspiration is performed (check payer bundling rules) |
77002 | Fluoroscopic guidance for needle placement (e.g., joint) | May be reported when image guidance is used during intra-articular injection of the cellular implant |
76942 | Ultrasonic guidance for needle placement | May be reported when ultrasound guidance is used for adipose harvest or intra-articular injection |
99024 | Postoperative follow-up visit, global period (routine) | May apply for routine postoperative visits in the global period depending on payer rules |