Summary & Overview
CPT 21720: Sternocleidomastoid Muscle Release for Torticollis
CPT code 21720 denotes surgical division of the sternocleidomastoid muscle for treatment of torticollis without application of a cast. This procedure is used to correct abnormal head tilt and neck muscle contracture that can impair function and quality of life. Nationally, the code matters for surgical specialties managing congenital or acquired torticollis and for payers assessing coverage and utilization of targeted neck procedures.
Key payers in this analysis include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find a concise overview of clinical context, typical settings of care, and the service type associated with the code. The publication also presents benchmarking and reimbursement context where available, highlights relevant policy considerations affecting payment and prior authorization, and outlines coding and billing considerations that affect claims processing.
The report is intended to inform care administrators, billing professionals, and policy stakeholders about the clinical purpose of 21720, common sites of service, and the payer landscape relevant to this procedure. Data not available in the input is noted where applicable.
Billing Code Overview
CPT code 21720 describes a surgical procedure in which the provider divides the sternocleidomastoid muscle to treat torticollis, a condition characterized by a tilted or rotated head due to neck muscle spasm or contracture. The description specifies that no cast is applied.
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Service type: Surgical release of the sternocleidomastoid muscle for torticollis
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Typical site of service: Operating room or ambulatory surgical center, commonly performed in an inpatient or outpatient surgical setting depending on patient factors and facility practices
Clinical & Coding Specifications
Clinical Context
A 6-year-old child presents to a pediatric otolaryngology clinic with persistent congenital muscular torticollis characterized by a fixed head tilt to the right, limited left neck rotation, and palpable tightness of the right sternocleidomastoid (SCM) muscle despite months of conservative therapy (physical therapy, stretching, and botulinum toxin where applicable). After multidisciplinary evaluation including physical exam and review of prior conservative management, the surgical plan is a selective open division (tenotomy or Z-plasty release) of the SCM to correct head posture and improve range of motion. The procedure is performed in an ambulatory surgery center under general anesthesia. The surgeon isolates and divides the affected SCM muscle without applying a postoperative cast. Intraoperative tasks include exposure of the SCM, division of the muscle (and possible fascial rearrangement), hemostasis, and layered wound closure; a small dressing is applied and the patient is observed in PACU for recovery and pain control before same-day discharge with instructions for postoperative physical therapy and wound care. Typical payors involved include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, BUCA, and Medicare depending on patient age and coverage type.
Coding Specifications
| Modifier | Description | When to Use |
|---|---|---|
22 | Increased procedural services | Use when work or time substantially exceeds the usual for 21720 due to extensive scarring or complex anatomy. |