Summary & Overview
CPT 22900: Excision of Intramuscular Abdominal Wall Mass, <5 cm
CPT code 22900 represents the surgical excision of an abnormal mass within the muscle layer beneath the abdominal wall, with the specimen submitted for laboratory analysis and measuring less than 5 cm. This procedure is clinically significant because it addresses potential benign or malignant soft-tissue lesions that require both therapeutic removal and diagnostic evaluation. Nationally, the code is used across inpatient and outpatient surgical settings and has implications for surgical practice patterns, pathology utilization, and episode-of-care costing.
Key payers included in this analysis are Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find a clinical and billing context for using CPT code 22900, including the typical sites of service, common service line placement, and how the code fits within surgical management of abdominal wall masses. The publication outlines benchmark considerations, payer coverage patterns where available, and policy implications affecting billing and documentation for excision of intramuscular abdominal wall lesions.
The report is intended for clinicians, coding professionals, and policy analysts seeking a concise reference on CPT code 22900, its clinical scope, and the administrative considerations that commonly accompany surgical excision of small intramuscular abdominal masses.
Billing Code Overview
CPT code 22900 describes the surgical excision of an abnormal mass located within the muscle layer beneath the abdominal wall. The procedure includes removal of the lesion and submission of the specimen, less than 5 cm in greatest dimension, to a laboratory for pathologic analysis to determine the nature of the mass.
-
Service type: Surgical procedure — excision of intramuscular abdominal wall mass
-
Typical site of service: Operating room or minor procedure suite in an ambulatory surgical center or hospital setting
Clinical & Coding Specifications
Clinical Context
A 48-year-old patient presents with a palpable, gradually enlarging mass deep to the anterior abdominal wall with intermittent localized pain. Imaging (ultrasound or CT) localizes a soft-tissue lesion within the rectus abdominis muscle measuring 3.8 cm. The surgeon schedules an outpatient excision of the intramuscular abdominal wall mass under general or regional anesthesia. Intraoperatively, the provider makes an incision through skin and subcutaneous tissue, dissects into the muscle layer, identifies and excises the lesion en bloc with a margin of surrounding muscle when indicated, controls hemostasis, and submits the specimen, which is less than 5 cm, to the pathology laboratory for histologic evaluation. Typical site of service is an ambulatory surgery center or hospital outpatient department. The clinical workflow includes preoperative consent and evaluation, perioperative anesthesia and monitoring, surgical excision and specimen handling (with TC/26 considerations for pathology reporting), postoperative recovery, and follow-up for pathology results and wound check.
Coding Specifications
| Modifier | Description | When to Use |
|---|---|---|
00 | No modifier; standard reporting | Use when no additional modifier applies to the service |