Summary & Overview
CPT 27550: Closed Reduction of Knee Dislocation, Manipulation
CPT code 27550 denotes a closed reduction of a knee dislocation performed by manual manipulation without anesthesia. Nationally, this code is used to document urgent, nonoperative restoration of knee alignment after dislocation, and it has implications for acute care billing and follow-up surgical or rehabilitative planning. Accurate coding supports appropriate claims processing, care coordination, and monitoring of emergent musculoskeletal interventions.
Key payers discussed include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find a concise review of clinical context for closed knee reduction, typical sites of service such as the emergency department or urgent care, and coverage considerations relevant to major national payers. The analysis addresses common billing themes: claim documentation requirements, expected service setting, and how this procedure interacts with subsequent care (imaging, immobilization, specialty referral).
This publication provides benchmarks where available, notes relevant policy updates affecting emergent procedural coding, and explains clinical factors that influence coding choice and recovery planning. Data not available in the input is indicated where applicable.
Billing Code Overview
CPT code 27550 describes a procedure in which the provider performs a closed reduction of a knee dislocation by manipulation without anesthesia. This code represents a procedural, urgent musculoskeletal intervention focused on restoring joint alignment through manual techniques rather than open surgical approaches.
Service type: Closed reduction, manipulation
Typical site of service: Emergency department or urgent care setting, with possible performance in an outpatient clinic when clinically appropriate.
Data not available in the input.
Clinical & Coding Specifications
Clinical Context
A 34-year-old male motorcyclist presents to a Level II emergency department with an obvious deformity of the knee and inability to bear weight after a high-energy crash. On initial evaluation, distal pulses and neurovascular status are assessed and documented. Plain radiographs confirm a posterolateral knee dislocation without associated open fracture. The treating emergency physician performs a closed reduction by manual manipulation at the bedside using procedural sedation or, if successful and tolerated, without anesthesia as described by CPT 27550. Post-reduction neurovascular examination and repeat radiographs are obtained. The patient is immobilized in a knee immobilizer and observed for compartment syndrome or vascular compromise; orthopedic consultation is obtained for further management and disposition.
Coding Specifications
| Modifier | Description | When to Use |
|---|---|---|
11 | Office or other outpatient visit for the evaluation and management service | Use when this reduction is performed during a standard physician outpatient visit and represents the usual service |
22 | Increased procedural services | Use when the reduction required substantially greater effort, complexity, or time than typical
| Unusual anesthesia | Use when anesthesia is administered but is considered unusual for the procedure (limited applicability for closed reduction without anesthesia)