Why Acupuncturists Get Sued: The Punctured Lung, the Infection, and the Retained Needle

By John Mahoney · June 2026 · 8 min read

Acupuncture is one of the least-litigated of the licensed health professions, and on paper it looks like a low-risk file: thin needles, minimal medication, no scalpel. But that profile is misleading, because the specialty's risk lives almost entirely in its tail. Most acupuncture treatments produce nothing worse than a bruise or a brief faint, yet a small set of mechanisms — a needle through the pleura into a lung, a contaminated needle seeding an infection, a needle left behind or snapped off and migrating — can turn a routine session into a catastrophic-injury or even wrongful-death claim. An attorney who values every acupuncture intake by its low base rate will miss the rare file that is worth far more than the volume suggests. This guide explains where acupuncture liability actually lives, the cannot-miss failures behind it, and what separates a strong case from a weak one — for plaintiff and defense med-mal attorneys.

Disclaimer: This article is for informational purposes only and does not constitute legal advice. Acupuncture claim data is sparse and drawn from adverse-event series and case reports across different eras, jurisdictions, and licensing schemes; treat the patterns below as directional, verify against the controlling jurisdiction and scope-of-practice rules, and value any individual case on its own record.

The Frequency-and-Severity Reality

By frequency, acupuncture is a low-claim field. Serious adverse events are commonly reported as rare relative to the enormous number of treatments delivered, and most documented complications are minor and self-limiting — needling pain, minor bleeding, bruising, and brief vasovagal episodes. Malpractice premiums for acupuncturists are correspondingly low compared with most physician specialties, reflecting both the low base rate of serious harm and the modest values of the typical claim. The cumulative volume of treatments is large, however, so even a low per-treatment risk produces a steady, if small, stream of serious-injury reports.

Severity is where acupuncture defies its mild reputation. The minor-event majority masks a catastrophic tail: the most consistently reported serious complication is pneumothorax from needling over the thorax or upper back, which can range from a small asymptomatic collection to a tension pneumothorax requiring emergency decompression, and fatalities have been reported. Beyond the lung, the literature documents serious infection (including local abscess and bloodborne transmission), retained and broken needles, and direct injury to nerves, spinal cord, and viscera. The screening lesson is that acupuncture has two valuation models inside one specialty — a high-volume, low-value bruise-and-faint group, and a rare, high-severity organ-injury group — and you must route every intake to the right one immediately.

The Dominant Allegation Types

Acupuncture claims cluster into a needle-mechanism group and a clinical-judgment group, with a consent thread running through both:

• Negligent needle technique causing organ injury — the highest-severity category, dominated by pneumothorax from needling over the chest, upper back, or supraclavicular region, and including deep-needling injury to nerves, spinal cord, blood vessels, and abdominal organs.
• Infection from improper needle hygiene — local cellulitis or abscess, and reported bloodborne transmission such as hepatitis, tied to non-sterile or reused needles and poor skin antisepsis.
• Retained, broken, or migrating needle — a needle left in the patient, or a needle that fractures and migrates, sometimes presenting long after the treatment.
• Burns and tissue injury from adjunct modalities — moxibustion burns and cupping injuries, which are common, visible, and photographable harms.
• Failure to recognize a serious underlying condition and refer — a delay-in-diagnosis theory when a treatable physician-level problem is managed as a complaint amenable to acupuncture.
• Lack of informed consent — central to the catastrophic-injury claims, where the risk of pneumothorax or infection was never disclosed.

The structural point: by count, acupuncture is a minor-complication field, but by dollars, the needle-mechanism organ injuries and the missed-diagnosis referrals dominate. Any intake should be triaged first on which side of that line it sits, because the merit analysis, the experts, and the damages are entirely different.

The Cannot-Miss Conditions and Failures

The conditions and failures that drive acupuncture litigation are:

• Pneumothorax from thoracic or upper-back needling. This is the signature catastrophic acupuncture injury and the most consistently reported serious complication. The recurring failure is needling too deeply or at the wrong angle over the lung fields — the chest wall, the area between the shoulder blades, or above the collarbone — in a region where safe depth is narrow and patient body habitus changes it.
• Infection — local abscess and bloodborne transmission. Non-sterile or reused needles and inadequate skin preparation can seed soft-tissue infection or transmit bloodborne pathogens such as hepatitis. These claims turn on documented single-use, sterile technique and clean-field protocol.
• Retained or broken needle and migration. A needle left in place after the session, or one that fractures and migrates through tissue, can present as delayed pain, a palpable foreign body, or organ injury well after treatment — a foreign-object theory that resonates with juries.
• Peripheral-nerve and spinal-cord or visceral injury from deep needling. Needling near the spine, major nerves, or over the abdomen can cause nerve injury, spinal-cord trauma, or puncture of an organ when depth and angle are misjudged.
• Burns and tissue injury from moxibustion and cupping. Thermal burns from moxa and the bruising or blistering of cupping are frequent, visible adverse outcomes — lower in severity but easy to prove and photograph.
• Vasovagal syncope and fall injuries. A patient who faints during or after needling and is injured in the fall, where monitoring and positioning are at issue.
• Failure to recognize and refer a serious underlying condition. Treating a red-flag presentation as an acupuncture-appropriate complaint, delaying the diagnosis of a condition that needed a physician.

For the needle-mechanism side, the single most actionable screening question is the anatomic-technique question: where on the body was the needle placed, how deep, and at what angle relative to the underlying lung, nerve, vessel, or organ? A pneumothorax claim very often turns on whether the practitioner respected the safe-depth limits over the thorax. For the judgment side, the decisive question is whether a red-flag presentation was recognized and referred, and — across both — whether the patient was warned of the realized risk.

The Contributing Factors That Drive Payouts

Across acupuncture adverse-event and claim reports, the recurring contributing factors are:

• Anatomic technique — depth, angle, and site selection — the single most consequential factor. Needling over the thorax, near the spine, or over viscera at unsafe depth or angle is the mechanism behind nearly every catastrophic claim, and it is the factor most directly tied to the standard of care.
• Aseptic technique and needle handling — single-use sterile needles, skin antisepsis, and clean-field discipline; lapses drive the infection and transmission claims, and a documented protocol is often the whole defense.
• Needle accounting — counting needles in and out and confirming none were retained or fractured; the foreign-object claims are largely a process-and-documentation failure.
• Informed consent — whether the patient was warned of pneumothorax, infection, bruising, and burn risk; the catastrophic claims are frequently as much a consent failure as a technique failure, and a generic or absent consent weakens the defense badly.
• Scope of practice and the duty to refer — recognizing red flags that exceed acupuncture's scope and referring to a physician; failure here converts an ordinary treatment into a delay-in-diagnosis claim.
• Documentation — records of points needled, depth, technique, consent, and post-treatment instructions that corroborate — or undermine — the standard-of-care account.

Two of these are acupuncture-specific levers. The first is the anatomic-technique record: in a pneumothorax case, the line between a defensible file and a paid claim is often whether the chart and the practitioner's account support safe depth and angle over the lung fields, or whether the injury itself implies a depth that no competent practitioner would use. The second is the consent record: because the serious risks are foreseeable and well-described in the literature, an absent or boilerplate consent that never mentioned pneumothorax or infection consistently raises the expected-payment weighting. Documentation rarely creates liability here, but it consistently decides whether a claim is paid.

Strong Case vs. Weak Case in Acupuncture Malpractice

The same factors grade the file, and the framing is useful to both sides.

What makes an acupuncture case strong (plaintiff) / dangerous (defense)

• A pneumothorax that followed needling over the chest, upper back, or supraclavicular region, where the injury itself implies a depth or angle outside safe limits and the record never warned of that risk.
• An infection or bloodborne transmission traced to reused or non-sterile needles or absent skin antisepsis, with no documented single-use, clean-field protocol.
• A retained or broken needle confirmed on imaging, with no needle-count process — a clean foreign-object theory that needs little expert gloss.
• A red-flag presentation managed as an acupuncture complaint while a treatable physician-level condition went undiagnosed, supporting a delay-in-diagnosis causation chain.
• A catastrophic harm with absent or generic informed consent that never disclosed the realized risk.

What makes an acupuncture case weak (plaintiff) / defensible (defense)

• Needling performed at documented safe depth and angle, away from the lung fields and viscera, with a complication that is a known, disclosed, low-probability risk rather than a technique error.
• A documented single-use, sterile-needle, clean-field protocol with skin antisepsis, framing an infection as an accepted, disclosed risk rather than negligence.
• A recorded needle count confirming none retained, defeating the foreign-object theory.
• A record showing appropriate referral or a recommendation to see a physician that the patient declined or ignored, where the delay was patient-driven.
• A specific informed consent that disclosed pneumothorax, infection, bruising, and burn risk, supported by documentation of points, depth, and post-treatment instructions.

Acupuncture rewards a fast triage. On the needle-mechanism side, the case lives or dies on the anatomic-technique account — depth, angle, and site over the lung, nerve, or organ — and the specificity of the consent. On the judgment side, it turns on whether a red flag was recognized and referred. Whichever side you are on, grading the file means matching the right model to the right claim and pressure-testing the expert — an acupuncture practitioner, and where the injury is medical, the treating physician — who will carry it.

Bottom Line

Acupuncturists get sued rarely, and most of the complaints that come are minor — bruising, a brief faint, a small burn — and modest in value. But the specialty hides a sharp severity spike that its gentle reputation conceals: pneumothorax from needling over the thorax is the signature catastrophic injury, infection and bloodborne transmission flow from hygiene lapses, and retained or broken needles create clean foreign-object claims, with nerve, spinal-cord, and organ injuries rounding out the tail. The cannot-miss facts are the unsafe depth or angle over the lung, the non-sterile needle, the un-counted needle left behind, the missed red flag that should have been referred, and the consent that never mentioned the risk that came true. Whether you are screening these cases for the plaintiff or defending them, triage first to the right model — needle-mechanism or clinical-judgment — and grade the file on the anatomic-technique record, the aseptic protocol, and the documented consent, not on the visible injury alone.

Questions? Contact us at [email protected] or (856) 979-6525

🔎 Screening a case in a different specialty? Browse all 70 specialty malpractice-risk guides in one place — Why Doctors Get Sued: Malpractice Risk by Specialty →