Regulatory Framework
Understanding the legal and regulatory basis for hirudotherapy in the United States
FDA-Cleared Indication
This page presents factual regulatory information regarding the FDA 510(k) clearance status of medicinal leeches in the United States.
Medicinal leeches occupy a unique regulatory position: they are living FDA 510(k)-cleared medical devices. Understanding this framework is essential for legal practice, informed consent, insurance coding, and institutional policy development.
FDA 510(k) Clearance History
| 510(k) Number | Year | Applicant | Species | Indication |
|---|---|---|---|---|
| K040187 | 2004 | Ricarimpex SAS (France) | Hirudo medicinalis, H. verbana | Venous congestion relief in flaps/replants |
| K132958 | 2014 | Biopharm UK Ltd | Hirudo verbana | Same as K040187 |
| K140907 | 2015 | Carolina Biological Supply Co. | Hirudo verbana | Same as K040187 |
Cleared Indications (Exact FDA Language)
- Pooling of blood beneath tissue grafts where there is no other mechanism of adequate venous drainage
- Restoring blood circulation in blocked veins by removing pooled blood
Product classification: Leech, Medicinal. Product code: NRN. 510(k)-cleared medical device.
Regulatory Journey Timeline
Medicinal leeches used in hospitals under physician discretion without FDA oversight
FDA grants first 510(k) clearance (K040187) to Ricarimpex SAS under CDRH
Two additional 510(k) clearances granted (K132958, K140907)
Regulatory responsibility transferred from CDRH to CBER (Federal Register 2024-31266)
Classification & Requirements
Device Classification
- Class: Pre-Amendment (510(k) Required)
- Product code: NRN
- Center: CBER (since Dec 30, 2024; previously CDRH)
- Single-use: Required — leeches cannot be reused between patients
Supplier Requirements
- 510(k) clearance for each supplier
- Species identification (H. medicinalis or H. verbana)
- QMSR compliance (21 CFR Part 820, ISO 13485:2016)
- Batch traceability and lot documentation
Single-Use Requirement
State Scope-of-Practice Considerations
Who May Apply Medicinal Leeches?
Scope-of-practice authority varies by state. Common scenarios:
- Physicians (MD/DO): Authorized in all states
- Nurse Practitioners: State-dependent; independent in 26 states + DC
- Naturopathic Physicians (ND): Varies significantly by state
- Registered Nurses: Under physician order/standing protocol
- Acupuncturists/Other: Generally NOT authorized
Legal Disclaimer
Insurance & Coding Implications
Coding Options
- CPT 17999: Unlisted procedure (most commonly used)
- HCPCS C1765: Adhesion barrier (hospital outpatient)
- ICD-10: Code to underlying condition
Coverage Reality
- Aetna CPB 0556: Covers flap/replant salvage as medically necessary
- Medicare: No national coverage determination
- Hospital inpatient: Typically absorbed into DRG payment
International Regulatory Landscape
| Jurisdiction | Classification | Status |
|---|---|---|
| United States | 510(k)-Cleared Medical Device | FDA-cleared for venous congestion |
| European Union | Medicinal Product / Medical Device | CE marked; harmonization ongoing |
| Russia | Approved medical therapy | Broadly approved; pharmacopeial monograph |
| WHO | Traditional medicine (ICD-11) | Included in ICD-11 traditional medicine module |
| India | Unani/Traditional medicine | Practiced under AYUSH framework |
ASH Position
The American Society of Hirudotherapy supports the current FDA 510(k) framework and advocates for evidence-based expansion of cleared indications as clinical data matures. ASH recommends that all practitioners verify their state scope-of-practice authority and use only FDA-registered leech suppliers.