Summary & Overview
CPT 41820: Periodontal Gingival Separation for Infection Treatment
CPT code 41820 denotes a periodontal surgical procedure in which the gingiva is separated from the tooth root to treat gum infection or to permit access to root surfaces. Nationally, this code captures a common dental surgical intervention used by dentists and periodontists to manage moderate to advanced periodontal disease that requires direct access to infected tissue. The code is relevant to both commercial payers and public programs because it affects coverage determination, billing consistency, and practice patterns across ambulatory dental and outpatient surgical settings.
Key payers in scope include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find a concise explanation of the clinical intent and typical settings for 41820, a summary of common modifiers used with the code, and guidance on where to find supporting diagnosis linkage. The publication also highlights benchmarks and policy considerations relevant to reimbursement and coding compliance, including documentation elements that justify a surgical periodontal approach. Data not available in the input is noted where applicable.
Billing Code Overview
CPT code 41820 describes a periodontal procedure in which the provider separates the gingiva (gums) from the tooth root. The procedure is typically performed to treat a gum infection or to access root surfaces for cleaning or other periodontal therapy.
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Service type: Periodontal surgical procedure
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Typical site of service: Dental office or ambulatory surgical setting
Clinical & Coding Specifications
Clinical Context
A 52-year-old patient presents to an oral surgery clinic with persistent localized gingival infection, pocketing, and exposure of the tooth root despite prior nonsurgical periodontal therapy. Clinical exam reveals inflamed, fibrotic gingiva with suprabony pockets and radiographic evidence of localized bone loss around a single tooth. The oral surgeon or periodontist plans a surgical procedure to separate the gingiva from the tooth root to access and debride the root surface, remove diseased tissue, and allow for improved periodontal healing. The patient is evaluated preoperatively for medical comorbidities, informed consent is obtained, and local anesthesia is administered. The procedure is performed in an outpatient dental or oral surgery clinic, typically under local anesthesia with or without sedation. Postoperative instructions, analgesics, and a short course of antibiotics may be provided, and a follow-up visit is scheduled to assess healing and plaque control.
Coding Specifications
| Modifier | Description | When to Use |
|---|---|---|
22 | Increased procedural services | Use when the work required to perform the gingival separation is substantially greater than usual (extensive debridement, unusual anatomy). |
23 | Unusual anesthesia |