Summary & Overview

CPT 01820: Anesthesia for Closed Radius/Ulna/Wrist/Hand Procedures

CPT code 01820 designates anesthesia services delivered for closed procedures involving the radius, ulna, wrist, or hand bones. This code captures anesthesia care for orthopedic closed reductions or closed fixation techniques on the distal upper extremity and is relevant across surgical, ambulatory, and hospital-based settings. Nationally, accurate coding for regional and general anesthesia in these procedures affects clinical documentation, quality measurement, and payment adjudication.

Key payers in the scope of this analysis include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find a concise overview of the code’s clinical context, expected places of service, and the implications for billing workflows. The publication also highlights common modifiers and typical payer considerations where available, plus benchmarking and policy updates when applicable.

This summary serves clinicians, anesthesiologists, coding professionals, and revenue cycle staff seeking a clear, national-level reference for CPT code 01820, including practical clarity on when the code applies and what to expect from major payers.

AetnaBlue Cross Blue ShieldCigna HealthUnitedHealthcareMedicareCPT 01820anesthesiaorthopedicsupper extremityclosed reductionoperating roomprocedure codingsurgical anesthesiarevenue cycleclinical documentation

Billing Code Overview

CPT code 01820 describes anesthesia services provided for a patient undergoing a closed procedure on the radius, ulna, wrist, or hand bones.

Service type: Anesthesia services for closed orthopedic procedures of the forearm, wrist, or hand.
Typical site of service: Operating room or procedure suite where closed reduction or fixation of radius, ulna, wrist, or hand bones is performed.

Data not available in the input.

Clinical & Coding Specifications

Clinical Context

A 48-year-old right-hand–dominant patient presents to the ambulatory surgery center after an acute distal radius fracture sustained during a fall. The orthopedic surgeon plans a closed reduction and percutaneous pinning of the distal radius under regional or general anesthesia. The patient undergoes preoperative evaluation by the anesthesia team, which documents medical history, airway assessment, and ASA physical status P2. On the day of surgery the anesthesia provider establishes monitoring, obtains informed consent, and performs either a supraclavicular or axillary brachial plexus block for surgical anesthesia; alternatively, general endotracheal or laryngeal mask airway anesthesia may be used if block is contraindicated or conversion is required.

The anesthesia service described by 01820 covers anesthesia for closed procedures on the radius, ulna, wrist, or hand bones. Typical workflow includes pre‑op evaluation, intraoperative management (sedation, airway, hemodynamic control), block performance if used, documentation of estimated blood loss and fluids, and post‑anesthesia recovery handoff to PACU staff. Common scenarios include closed reduction and percutaneous pinning, irrigation and drainage for certain traumatic injuries, or closed treatment of carpal bone fractures where open exposure is not required. Communication with the surgical team regarding potential conversion to open procedure or intraoperative complications (requiring modifier use such as 62 or 78) is documented by the anesthesia provider.

Coding Specifications

Modifier	Description	When to Use
`23`	Unusual anaesthesia	Use when a procedure is performed under general anesthesia due to unusual circumstances for minor surgery that normally would not require GA.
`50`	Bilateral procedure	Use when identical procedures are performed on both sides of the body (e.g., bilateral wrist procedures) and anesthesia is provided accordingly.
`52`	Reduced services	Use when the anesthesia service is partially reduced or not completed as originally planned.
`53`	Discontinued procedure	Use when anesthesia is terminated due to patient condition or intraoperative cancellation prior to completion.
`62`	Two surgeons	Use when two surgeons work together as primary surgeons and the anesthesia documentation reflects shared operative management impacting anesthesia complexity.
`78`	Unplanned return to OR	Use when the patient returns to the operating room for a related procedure during the global period and additional anesthesia is rendered.
`AA`	Anesthesia by anesthesiologist	Use to indicate the anesthesia service was personally performed by a physician anesthesiologist.
`AD`	Medical direction by physician	Use when a physician medically directs qualified nonphysician anesthetists for multiple cases.
`QK`	Medical direction of two, three, or four concurrent anesthesia procedures involving qualified CRNAs	Use when the physician directs CRNAs for concurrent cases as defined by CMS.
`QS`	Monitored anesthesia care (MAC)	Use when MAC rather than general or regional anesthesia is provided for the procedure.
`QX`	CRNA service with medical direction by physician	Use when a CRNA provides the anesthesia under physician medical direction and reporting requires identification of both clinician types.
`QY`	Medical direction of one CRNA by an anesthesiologist	Use when a physician directs one CRNA during the anesthesia service.
`QZ`	CRNA service without medical direction by physician	Use when a CRNA furnishes anesthesia without physician supervision.

Taxonomy Code	Specialty	Notes
`207L00000X`	Orthopaedic Surgery	Primary surgical specialty performing closed reductions and fixation of forearm and wrist fractures.
`207K00000X`	Hand Surgery	Subspecialty managing complex hand and wrist injuries; may perform closed procedures when indicated.
`207P00000X`	Anesthesiology	Providers who perform regional blocks and general anesthesia for upper extremity procedures.
`363A00000X`	Pain Medicine	May perform peripheral nerve blocks or perioperative pain management for hand/wrist procedures.
`208D00000X`	General Surgery	Occasionally involved in trauma settings providing surgical management of forearm or wrist injuries.

Related Diagnoses

ICD-10 Code	Description	Clinical Relevance
`S52.502A`	Unspecified fracture of lower end of radius, left arm, initial encounter for closed fracture	Distal radius fractures commonly require closed reduction and anesthesia for manipulation or percutaneous fixation.
`S52.501A`	Unspecified fracture of lower end of radius, right arm, initial encounter for closed fracture	Right-sided distal radius fracture scenario requiring closed procedure and anesthesia.
`S62.90XA`	Unspecified fracture of wrist and hand, initial encounter for closed fracture	General code for wrist/hand fractures that may necessitate closed procedures covered by `01820`.
`S62.209A`	Unspecified fracture of navicular [scaphoid] bone of unspecified wrist, initial encounter for closed fracture	Scaphoid fractures sometimes treated with closed techniques under anesthesia.
`S62.000A`	Fracture of unspecified carpal bone of unspecified wrist, initial encounter for closed fracture	Carpal bone fractures managed with closed procedures requiring anesthesia services.
`S52.501D`	Unspecified fracture of lower end of radius, right arm, subsequent encounter for fracture with routine healing	Indicates follow-up encounters where anesthesia may be used for subsequent closed procedures or manipulations.

Related CPT Codes

CPT Code	Description	Relationship to This Procedure
`20600`	Arthrocentesis, aspiration and/or injection; major joint or bursa (e.g., shoulder, elbow, hip, knee)	May be performed preoperatively for diagnostic or therapeutic aspiration when effusion complicates wrist/forearm injuries; not typically billed with `01820` but can be part of perioperative care.
`25600`	Closed treatment of distal radial metaphyseal fracture; without manipulation, with or without casting	Related closed fracture care; anesthesia may be provided for manipulation or reduction of distal radius fractures billed under `01820` when anesthesia services are required.
`25605`	Closed treatment of distal radial metaphyseal fracture; with manipulation	Commonly performed with anesthesia services coded to `01820` when closed reduction with manipulation is required.
`29075`	Closed treatment of carpal bone dislocation or fracture; without manipulation	Allied procedures on carpal bones that may occur in the same operative setting; anesthesia coded separately with `01820` for closed bone procedures of wrist/hand.
`64415`	Injection, anesthetic agent; brachial plexus, single injection	Regional nerve block that may be performed by the anesthesia or pain team as the primary anesthetic technique supporting the procedure billed with `01820`.
`31500`	Intubation, endotracheal, emergency or elective	Airway management code that may be performed as part of general anesthesia for cases where general anesthesia is used instead of regional techniques for procedures covered by `01820`.