Summary & Overview
CPT 38550: Excision of Cystic Hygroma, Neck or Axilla
CPT code 38550 represents the surgical excision of a cystic hygroma in the neck or armpit, a targeted procedure to remove superficial lymphatic malformations without deep dissection around major nerves and blood vessels. This code is important nationally because it documents a specific operative service used by surgeons and facilities to classify and bill for treatment of congenital or acquired cystic lymphatic lesions in pediatric and adult populations.
Key payers covered in this analysis include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find a clear description of the clinical service, typical sites of care, and the operational context in which CPT code 38550 is used. The publication outlines common billing considerations, expected care settings, and the clinical context for use. It also summarizes available benchmarks and policy-relevant elements where data exist and notes when input data are not available.
The report is intended for clinicians, billing professionals, and policy analysts seeking a concise reference on CPT code 38550, what it represents clinically, and the payer landscape relevant to this specific excision procedure.
Billing Code Overview
CPT code 38550 describes the surgical excision of a cystic hygroma located in the axillary (armpit) or cervical (neck) region. The procedure involves removal of the lymphatic malformation without deep dissection or entry into the major neurovascular structures of the area.
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Service type: Minor surgical excision of a superficial lymphatic malformation
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Typical site of service: Ambulatory surgical center or hospital outpatient department, depending on clinical setting and patient needs
Data not available in the input.
Clinical & Coding Specifications
Clinical Context
A pediatric patient, age 6 months to 3 years, presents with a soft, fluctuant, transilluminating mass in the posterior triangle of the neck consistent with a cystic hygroma (lymphatic malformation). The child has progressive enlargement causing localized discomfort and potential airway or cosmetic concerns. Preoperative evaluation includes physical exam, focused ultrasound to define cystic versus solid components, and discussion of anesthesia risks with the family. The procedure is performed in an ambulatory surgical center or hospital operating room under general anesthesia. The surgeon makes a superficial incision over the lesion, performs careful blunt and sharp dissection to excise the cystic hygroma without deep dissection into the carotid sheath or major neurovascular structures, achieves hemostasis, and closes the wound. Postoperative care includes short observation for airway compromise, pain control, and discharge with wound care instructions. Typical sites of service are the outpatient surgical center or hospital outpatient department. Common payors include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, BUCA, and Medicare.
Coding Specifications
| Modifier | Description | When to Use |
|---|---|---|
00 | No modifier — standard reporting | Use when no modifier applies and service is performed as billed |
11 |