Chiropractic Scope of Practice in Arizona

The chiropractic scope of practice in Arizona is legally defined as the practice of locating and correcting subluxations, functional vertebral or articular dysarthrosis, or other neuromuscular skeletal disorders of the human body for the purposes of restoring and maintaining health ¹. This statutory framework is significant for both public health and professional regulation, as it establishes the legal boundaries for patient care, ensures a standard of service, and provides the Arizona Board of Chiropractic Examiners with the authority to license, regulate, and discipline practitioners ². The scope delineates the procedures a chiropractor is permitted to perform, the diagnostic tools they may use, and the activities they are explicitly forbidden from undertaking. This legal definition, primarily codified in Arizona Revised Statutes (A.R.S.) § 32-925, forms the basis for the profession's role within the state's healthcare system.

At its core, the Arizona scope of practice centers on the adjustment and manipulation of the articulations of the human body, particularly the spinal column, a concept foundational to the profession since its origins ³. Practitioners are authorized to diagnose conditions related to subluxations and neuromuscular skeletal disorders, and for these diagnostic purposes, they are explicitly permitted to use diagnostic x-rays ⁴. The scope also extends to a range of adjunctive procedures. Following a 2010 amendment to A.R.S. § 32-925(B) under House Bill 2025, chiropractors are authorized to use "physical medicine modalities," which include the therapeutic application of physical agents such as thermal, acoustic, light, mechanical, or electric energy ⁵. Examples of these modalities are hot or cold packs, ultrasound, galvanism, microwave, diathermy, and electrical stimulation ⁵. According to the Arizona Administrative Code, the scope of chiropractic practice includes nutrition, which is defined as encompassing vitamins, minerals, water, enzymes, botanicals, homeopathic preparations, phytonutrients, glandular extracts, and natural hormones. ⁶.

The scope also provides pathways for chiropractors to incorporate specialized techniques. According to Arizona state law, a licensed chiropractor may be certified to perform acupuncture after completing a minimum of one hundred hours of study and passing a board approved examination on the subject. ⁷. However, the scope has firm limitations. A.R.S. § 32-925(E) explicitly prohibits doctors of chiropractic from performing operative surgery of any kind ⁸. The statute also places strict conditions on the treatment of animals; a chiropractor may only perform an adjustment on an animal if a licensed veterinarian has first diagnosed a condition requiring such treatment and the procedure is done under the veterinarian's direct or indirect supervision ⁹. While Arizona law does not specify the circumstances under which a chiropractor may use the title 'chiropractic physician', the Arizona Board of Chiropractic Examiners has the power to adopt rules necessary for enforcing the practice act ¹⁰². This article further examines the specific procedures, diagnostic methods, and adjunctive therapies authorized within Arizona, details the explicit prohibitions and limitations, and discusses the role of the Arizona Board of Chiropractic Examiners in interpreting and enforcing this scope of practice.

Governing framework: The Arizona Board of Chiropractic Examiners and statutory authority

The practice of chiropractic in Arizona is regulated by the Arizona Board of Chiropractic Examiners, the primary administrative body responsible for licensing, oversight, and professional discipline. The Board's authority is established by state law, and its fundamental purpose is to protect the public health, safety, and welfare by ensuring that chiropractors adhere to established standards of care and practice within a legally defined scope. The historical development of such state boards reflects a broader movement within the profession to achieve formal recognition and standardized regulation, a process documented in works like Three generations: a history of chiropractic ³.¹¹ The Board's most significant power is its mandate under Arizona Revised Statutes (A.R.S.) § 32-904 to adopt and enforce rules that are "necessary and proper for the enforcement" of the state's chiropractic practice act ². This rulemaking authority allows the Board to translate the broad principles of the statutes into specific, enforceable standards for daily practice.

The Board's rules provide critical clarification for the scope of practice outlined in A.R.S. § 32-925, which statutorily defines chiropractic as including the diagnosis and correction of subluxations, functional vertebral or articular dysarthrosis, and neuromuscular skeletal disorders ¹²¹. While the statute provides the legal foundation, the Board's administrative code details the requirements for performing certain procedures. For instance, for a chiropractor to practice acupuncture, the Arizona Administrative Code, as promulgated by the Board, specifies that the licensee must complete a minimum of 105 hours of postgraduate instruction in the subject ⁷. This is a direct exercise of the Board's power to set competency standards for ancillary services that fall within the profession's scope.

Similarly, the Board oversees the application of adjunctive therapies. The legislature expanded the statutory scope in 2010 through HB 2025, which amended A.R.S. § 32-925(B) to explicitly define and authorize the use of "physical medicine modalities" ⁵. These modalities include a range of physical agents like thermal, acoustic, and electric energy, such as ultrasound, diathermy, and electrical stimulation ⁵. The Board is responsible for ensuring chiropractors use these modalities competently and appropriately. Furthermore, the Board's policies affirm the ability of chiropractors to provide nutritional advice and to sell vitamins and supplements, an activity permitted under the general practice statute, A.R.S. § 32-925 ⁶.

In addition to rulemaking, the Board holds significant enforcement powers. It is tasked with investigating complaints against licensees for issues such as gross malpractice, unprofessional conduct, or practicing beyond the legal scope of practice. While A.R.S. § 32-925 explicitly prohibits activities like performing operative surgery ⁸, the Board's administrative rules further define what constitutes unprofessional conduct in more granular detail ¹³. Through its disciplinary process, which may include hearings and formal actions, the Board can issue sanctions ranging from letters of concern to the suspension or revocation of a chiropractor's license to practice in Arizona. This enforcement mechanism ensures that the statutory and administrative rules governing the profession are not merely advisory but are actively upheld.

Core diagnostic and adjustive procedures

The legal foundation for the practice of chiropractic in Arizona is delineated in Arizona Revised Statutes § 32-925, which defines its core as the diagnosis and correction of specific conditions ¹². This statute specifies that chiropractors are licensed to address "subluxations, functional vertebral or articular dysarthrosis, or neuromuscular skeletal disorders" ¹. This statutory language provides the essential framework that governs the primary diagnostic and therapeutic activities of chiropractors within the state. The interpretation and application of these terms by the Arizona Board of Chiropractic Examiners further shape the boundaries of these foundational procedures ².

At the historical and philosophical heart of the profession is the concept of the subluxation. While first articulated by the founder of chiropractic, D. D. Palmer, as a vertebral misalignment causing nerve interference, the term has evolved within the profession. In the context of Arizona law, it is understood as a biomechanical lesion or dysfunction that affects the normal physiological relationship between vertebrae or other articular surfaces, impacting the nervous system and overall health ¹², ¹. The diagnostic process for identifying these conditions is multifaceted. Arizona law explicitly authorizes chiropractors to use diagnostic x-rays for this purpose, a right affirmed in legislation such as the 2023 Senate Bill 1041 ⁴. Beyond radiography, diagnosis involves a thorough physical examination, including orthopedic and neurological testing, palpation to assess joint mobility and tissue texture, and a detailed patient history.

The scope also includes the diagnosis and treatment of "functional vertebral or articular dysarthrosis," a term describing abnormal or painful joint movement, and the broader category of "neuromuscular skeletal disorders" ¹². This language legally empowers Arizona chiropractors to evaluate and manage a wide array of conditions beyond the spine, including issues in extremity joints, muscles, and related nerves. This broadens the clinical focus from a purely spinal model to a more comprehensive approach to the body's entire neuromuscular and skeletal systems.

The primary therapeutic method for correcting these diagnosed conditions is the chiropractic adjustment, a procedure distinct from physical therapy or general manipulation. The adjustment is defined as a specific, controlled force directed into a joint that has become hypomobile or is functioning improperly. The objective is to restore normal joint motion, correct biomechanical and structural abnormalities, and improve neurological function. Techniques for performing adjustments are varied and are taught as part of a doctor of chiropractic's core education, with specific methods detailed in established texts on the subject. While chiropractors are authorized to perform these corrective procedures, the scope is strictly defined. For instance, A.R.S. § 32-925(E) explicitly prohibits them from performing operative surgery, establishing a clear boundary for the hands-on corrective work that defines the profession ⁸.

Authorized adjunctive therapies: Physical medicine and nutrition

In addition to the primary corrective procedure of the chiropractic adjustment, Arizona law authorizes licensed chiropractors to employ a range of adjunctive therapies to support patient care for neuromuscular skeletal disorders ¹². These therapies are not the central focus of chiropractic but serve as complementary procedures. The scope of these authorized therapies is defined within the Arizona Revised Statutes, primarily through language concerning physical medicine and nutrition ⁵⁶.

The legal framework for physical medicine was significantly clarified in 2010 with the passage of House Bill 2025, which amended A.R.S. § 32-925(B) ⁵. This amendment provided a statutory definition for "physical medicine modalities and procedures," codifying a broad spectrum of therapeutic applications. The law defines these as the therapeutic use of any physical agent or device, including thermal, acoustic, light, mechanical, or electric energy ⁵. The statute explicitly lists several examples of permitted modalities, such as the application of hot or cold packs, ultrasound, galvanism, microwave, diathermy, and various forms of electrical stimulation ⁵. These modalities are intended to produce therapeutic change in biological tissues to reduce pain, decrease inflammation, improve circulation, and facilitate neuromuscular re-education. For instance, therapeutic ultrasound uses acoustic energy to generate deep heat within soft tissues, while electrical muscle stimulation uses controlled electrical currents to elicit muscle contractions. This legislative inclusion of physical medicine represents a significant evolution from the early, more philosophically narrow practice of chiropractic, which often focused exclusively on the manual spinal adjustment as advocated by founders like D.¹⁴ D. Palmer.

Beyond physical modalities, the scope of practice in Arizona extends to nutritional care. A.R.S. § 32-925 explicitly permits chiropractors to provide nutritional advice to their patients ⁶. This authority is not limited to counseling; the statute also allows chiropractors to sell vitamins, minerals, and food supplements directly from their offices as a component of a patient’s treatment plan ⁶. The inclusion of nutrition is consistent with the profession's holistic approach to health and its focus on managing the underlying factors contributing to the neuromuscular and skeletal conditions they are licensed to diagnose and treat ¹. The Arizona Board of Chiropractic Examiners, under its legislative mandate to create rules for the profession, retains oversight of how these adjunctive therapies are applied in practice to ensure they are used appropriately and safely ².

Diagnostic imaging: The role of X-rays in Arizona chiropractic practice

The use of diagnostic imaging is a statutorily defined component of chiropractic practice in Arizona. State law explicitly authorizes licensed chiropractors to employ diagnostic X-rays for the purpose of evaluation and diagnosis ⁴. This authority was clarified and affirmed through the 2023 legislative act SB 1041, which amended Arizona Revised Statutes § 32-925(B) to specify that chiropractors may use these imaging tools as part of their diagnostic procedures ⁴. This authorization is not for therapeutic purposes, but strictly for analysis to support the primary duties of a chiropractor as defined by law: the diagnosis of conditions such as subluxations, functional vertebral or articular dysarthrosis, and other neuromuscular skeletal disorders ¹².

In clinical practice, diagnostic X-rays serve several functions. Primarily, they are used to visualize the structure and alignment of the spine and other joints, which can help in identifying biomechanical faults, degenerative changes, congenital anomalies, and the effects of trauma. The use of radiography to analyze the spine has a long history within the profession, with prominent early figures like B.J. Palmer advocating for its integration into chiropractic assessment soon after its discovery, a development chronicled in historical accounts of the profession's growth ³. Radiographic findings are foundational to the development of a specific and safe treatment plan. For many chiropractic techniques, the precise angles and anatomical landmarks identified on an X-ray image are used to determine the exact line of correction and force needed for a chiropractic adjustment.

Beyond guiding treatment, diagnostic imaging is also a critical tool for screening and patient safety. A radiographic examination can reveal pathologies or contraindications that would make manual adjustments inappropriate or unsafe, such as fractures, dislocations, infections, or tumors. In such cases, the imaging results would mandate a referral to a different medical specialist for appropriate care. The Arizona Board of Chiropractic Examiners is empowered by statute to create and enforce rules that govern the profession, which includes setting standards for competency and safety in the use of diagnostic X-rays ². These regulations ensure that chiropractors who utilize radiographic equipment are properly trained in its operation, the interpretation of images, and radiation safety protocols to protect both the patient and the public. The use of X-rays is thus integrated into the legal, diagnostic, and safety frameworks of chiropractic care in the state.

Specialized and extended practices: Acupuncture and animal chiropractic

Beyond the core diagnostic and treatment functions centered on human subluxations and neuromuscular skeletal disorders, Arizona law provides specific pathways for licensed chiropractors to obtain certification for specialized practices, including acupuncture and animal chiropractic ⁹, ⁷. These extensions of practice are not inherent in the chiropractic license but require additional training and adherence to strict regulatory frameworks established by the Arizona Legislature and the Arizona Board of Chiropractic Examiners ². The regulations for these modalities emphasize patient safety and, in the case of animal care, mandate a structured model of interprofessional collaboration.

For a chiropractor to perform acupuncture in Arizona, they must first complete a significant amount of specialized postgraduate education. The Arizona Administrative Code mandates a minimum of 105 hours of postgraduate instruction in acupuncture for a chiropractor to become certified in the modality ⁷. This requirement, enforced by the Board of Chiropractic Examiners, ensures that practitioners possess a foundational knowledge of acupuncture theory, needle technique, and safety protocols before incorporating it into their services. Once certified, chiropractors can use acupuncture as a therapeutic tool for conditions that fall within the chiropractic scope of practice, such as the management of pain associated with functional vertebral or articular dysarthrosis or other neuromuscular skeletal disorders defined in Arizona Revised Statutes § 32-925 ¹², ¹. This allows for an integrated approach where acupuncture complements traditional chiropractic adjustments.

The practice of animal chiropractic is even more stringently regulated and is legally structured around a required partnership with the veterinary profession. According to Arizona Revised Statutes § 32-925, a chiropractor is permitted to perform a chiropractic adjustment on an animal only under two specific and non-negotiable conditions ⁹. First, the animal must have been previously examined and diagnosed by a licensed veterinarian, who must determine that the animal has a condition that warrants a chiropractic adjustment. This provision places the primary diagnostic authority squarely with the veterinarian. Second, the chiropractic adjustment must be performed under the direct or indirect supervision of the diagnosing veterinarian ⁹. This legal framework creates a referral and supervision model, ensuring that animal chiropractic care is integrated into a comprehensive veterinary treatment plan rather than functioning as a standalone service. This contrasts sharply with the chiropractor's role in human care, where they exercise independent diagnostic and treatment authority within their statutory scope. The law effectively makes the chiropractor a specialized consultant operating under the oversight of the primary veterinary care provider.

Explicit prohibitions and professional boundaries

The legal framework governing chiropractic in Arizona establishes clear professional boundaries by defining not only what is permitted but also what is explicitly forbidden. The most significant and unambiguous prohibition is against the practice of operative surgery. Arizona Revised Statutes § 32-925(E) states directly that a doctor of chiropractic may not perform operative surgery ⁸. The statute provides no exceptions, meaning even procedures that might be considered minor surgery are outside the legal scope of chiropractic practice in the state ⁸. This prohibition reflects a foundational distinction between chiropractic and allopathic medicine that has historical roots in the development of the profession, which focused on non-invasive spinal adjustments as its core modality, a principle articulated by early leaders like D. D. Palmer ³,.

Beyond the absolute ban on surgery, another primary professional boundary is the lack of authority to prescribe or administer legend (prescription) drugs or controlled substances. The statutory definition of chiropractic practice in A.R.S. § 32-925 centers on the diagnosis and correction of neuromuscular skeletal disorders through manual adjustments, physical medicine modalities, and nutritional support ¹², ¹, ⁶. The law authorizes the use of physical agents such as thermal, acoustic, and electric energy, as well as diagnostic x-rays ⁵, ⁴. The absence of any language granting prescriptive authority within this detailed definition effectively prohibits the practice. This maintains a bright line between chiropractic care and practices reserved for medical doctors and other licensed prescribers.

Engaging in prohibited acts, or in authorized acts without the proper qualifications, constitutes practicing beyond the scope of chiropractic. This is a legal concept enforced by the Arizona Board of Chiropractic Examiners, which possesses the power to adopt rules and take disciplinary action against licensees to enforce the state's chiropractic laws ². While a specific, consolidated definition of "practicing beyond the scope" may not be present in a single administrative rule ¹³, the principle is upheld by holding practitioners to the limits established in the statutes. For example, a chiropractor in Arizona may perform acupuncture, but only after completing a minimum of 105 hours of Board-approved postgraduate training and receiving the corresponding certification ⁷. A chiropractor who performs acupuncture without meeting this requirement would be practicing beyond their individual authorized scope, even though the modality is available to the profession generally. Similarly, while chiropractors can provide nutritional advice and sell supplements ⁶, making therapeutic claims to treat conditions far removed from the neuromuscular skeletal system could be deemed to exceed the statutory scope defined in A.R.S. § 32-925 ¹. The enforcement of these boundaries by the Arizona Board of Chiropractic Examiners ensures that practitioners adhere to the legal and professional limits established by the state legislature.

The 'Chiropractic Physician' title and its legal standing

The use of the title 'chiropractic physician' by licensed chiropractors in Arizona occupies a space of significant legal ambiguity. While the term is prevalent on professional signage, websites, and business cards throughout the state, its basis in Arizona law is undefined. The primary statute governing professional titles, Arizona Revised Statutes (A.R.S.) § 32-926, does not specifically enumerate 'chiropractic physician' as a legally protected or authorized title for a licensee ¹⁰. This statutory silence creates a complex situation with both professional and legal ramifications for practitioners.

The historical context for the adoption of such a title is rooted in the chiropractic profession's long-standing effort to achieve cultural and legal parity with allopathic and osteopathic medicine, a struggle documented in works like David D. Palmer's Three generations: a history of chiropractic ³. The term 'physician' implies a primary care role and broad diagnostic authority, which aligns with the educational and practice aspirations of a segment of the profession. However, the legal reality in Arizona is dictated by a more narrowly defined scope of practice. A.R.S. § 32-925 defines the practice of chiropractic as the diagnosis and correction of subluxations, functional vertebral or articular dysarthrosis, or neuromuscular skeletal disorders ¹². While this includes diagnostic authority, such as the use of x-rays ⁴, it is confined to a specific system of the body.

The legal jeopardy arises from the potential for the title 'chiropractic physician' to mislead the public into believing a chiropractor’s scope of practice is equivalent to that of a medical or osteopathic physician. For example, A.R.S. § 32-925(E) explicitly prohibits chiropractors from performing operative surgery, a core component of general physician practice ⁸. A practitioner using the 'physician' title could, intentionally or not, imply an authority to practice medicine beyond the limits set by statute. This could lead to disciplinary action by the Arizona Board of Chiropractic Examiners. The Board is granted the power under A.R.S. § 32-904 to adopt rules necessary for the enforcement of the chiropractic practice act, including rules defining unprofessional conduct ². Although specific administrative rules clarifying the use of 'chiropractic physician' have not been established, the Board could interpret the use of the title as a form of misrepresentation, particularly if a practitioner's actions or advertising suggest a scope of practice broader than legally allowed ¹³. This leaves the onus on individual chiropractors to ensure their use of the title does not create a false impression of their statutory practice limitations.

Comparative analysis: Arizona's scope in a national context

Arizona's chiropractic scope of practice is among the broader in the United States, reflecting a legislative embrace of the "mixer" philosophy, which integrates adjustive techniques with a wide range of diagnostic and therapeutic modalities. The foundation of practice, defined in Arizona Revised Statutes § 32-925, includes the diagnosis and correction of subluxations, functional vertebral or articular dysarthrosis, or neuromuscular skeletal disorders, a tenet common to all states where chiropractic is licensed ¹²¹. However, Arizona distinguishes itself through its explicit statutory authorizations for adjunctive procedures, placing it in a category of states with similarly expansive definitions.

A key indicator of this broad scope is the 2010 amendment to state law, which codified a specific list of "physical medicine modalities" that chiropractors can use for therapeutic purposes ⁵. This list includes therapies based on thermal, acoustic, light, mechanical, and electric energy, such as hot or cold packs, ultrasound, diathermy, and electrical stimulation ⁵. Such legislative clarity contrasts with states that have a more limited or less defined scope for adjunctive procedures. The state’s scope is further broadened by its inclusion of acupuncture. Under rules set by the Arizona Board of Chiropractic Examiners, a licensed chiropractor can become certified to perform acupuncture after completing a minimum of 105 hours of postgraduate instruction ⁷. This authorization represents a significant expansion beyond the core practice of spinal adjustment and is not permitted in states with more restrictive, or "straight," chiropractic laws.

Consistent with this broad-scope model, Arizona law also permits chiropractors to provide nutritional advice and to sell vitamins, minerals, and food supplements to their patients ⁶. This practice aligns with the holistic patient care approach favored by "mixer" practitioners, a philosophical stance that has been a central theme throughout chiropractic's development, as documented in historical analyses of the profession ¹⁵. In terms of diagnostic authority, Arizona law explicitly authorizes chiropractors to use diagnostic x-rays, a standard authority in most U.S. jurisdictions that was reaffirmed in the state through legislation in 2023 ⁴.

While the scope is broad, it is also clearly delineated. Arizona, like every other state, expressly prohibits chiropractors from performing operative surgery ⁸. A.R.S. § 32-925(E) offers no exceptions for even minor surgical procedures, establishing a firm boundary between the chiropractic and medical professions ⁸. A more unique regulatory feature in Arizona concerns animal adjusting. State law creates a specific, collaborative model where a chiropractor may only perform an adjustment on an animal after a licensed veterinarian has diagnosed a condition requiring it and the procedure is done under the veterinarian's direct or indirect supervision ⁹. This contrasts with many other states where the practice may be unregulated, prohibited, or governed by different interprofessional rules. Arizona's legal framework thus constructs a practice that is expansive in its therapeutic tools, reflecting historical trends toward a broader scope seen in other states ¹⁶, while maintaining the profession's traditional, non-surgical boundaries.

Sources

1. Arizona State Legislature, A.R.S. § 32-925 - https://www.azleg.gov/viewdocument/?docName=https://www.azleg.gov/ars/32/00925.htm

2. Arizona Revised Statutes, Title 32, Chapter 8 - Chiropractic - https://www.azleg.gov/arsDetail/?title=32

3. Arizona Revised Statutes, § 32-925 - https://www.azleg.gov/ars/32/00925.htm

4. Arizona State Legislature, SB 1041 (2023) - https://www.azleg.gov/legtext/56leg/1r/bills/sb1041s.pdf

5. Arizona House Bill 2025, Chapter 26 (2010) - https://azmemory.azlibrary.gov/digital/collection/statepubs/id/29033

6. Arizona Administrative Code, Title 4, Chapter 7, R4-7-101 - https://apps.azsos.gov/public_services/Title_04/4-07.pdf

7. Arizona Revised Statutes, 2022 - https://www.azleg.gov/ars/32/00922-02.htm

8. FindLaw, Arizona Revised Statutes § 32-925 - https://codes.findlaw.com/az/title-32-professions-and-occupations/az-rev-st-sect-32-925.html

9. Arizona Administrative Code, R3-11-108, 2023 - https://apps.azsos.gov/public_services/Title_03/3-11.pdf

10. Arizona Revised Statutes § 32-900 - https://www.azleg.gov/ars/32/00900.htm

11. Russell W. Gibbons, Chiropractic history (1977) - https://openlibrary.org/works/OL5541722W

12. Arizona Revised Statutes § 32-925 - https://www.azleg.gov/ars/32/00925.htm

13. Cornell Law School Legal Information Institute - https://www.law.cornell.edu/regulations/arizona/Ariz-Admin-Code-R4-7-901

14. Walter I. Wardwell, Chiropractic (1992) - https://openlibrary.org/works/OL4280776W

15. History of Chiropractic in Wisconsin, 1950-1990 (History of Chiropractic in Wisconsin, 1950-1990) by R. B. Mawhiney (1988) - https://openlibrary.org/works/OL9647249W

16. Arizona Revised Statutes § 32-925 - Practice of chiropractic; limitations - https://law.justia.com/codes/arizona/2022/title-32/chapter-8/article-2/section-32-925/