Pain clinics sit at the intersection of two currents: an expanding chronic pain population with ageing, and the FY2026 fee schedule revision.
Pain that increases with age — lower back and leg pain, osteoarthritis pain, post-herpetic neuralgia, headache — is difficult to satisfy with pharmacotherapy alone, so latent demand for pain clinics centered on nerve blocks is firm. Clinics declaring pain clinic services enter from internal medicine, surgery, and anesthesiology alike, and the difference in declared specialty is described as "merely a difference in the physician's original training and administrative classification, not in the treatment itself."
1. Macro environment — the peculiarity of declaring "anesthesiology"
The first thing an operator must grasp precisely is the peculiarity of declaring "anesthesiology."
Where most specialty names require only notification, declaring anesthesiology requires the physician personally to obtain authorization from the Minister of Health, Labour and Welfare under Article 6-6(1) of the Medical Care Act.
Requirements include at least two years of dedicated anesthesia training under an anesthesia instructor after licensure, and experience performing 300 or more general anesthesia cases with endotracheal intubation, subject to documentary review by the Medical Ethics Council (typically three times yearly). Applications are filed electronically, with results typically announced around April, August, and December.
In other words, opening under an anesthesiology sign presupposes a personal credentialing review of the director, separate from facility filing — decisively different from other specialties. Where the requirement is not met, the design becomes declaring the base specialty as "pain clinic internal medicine" or "pain clinic surgery" without declaring anesthesiology.
Relation to the FY2026 revision
On fees, the FY2026 revision reportedly restructured general anesthesia evaluation fundamentally along three axes: anesthesia depth, airway device use, and anesthesia management capability. But this concerns surgical anesthesia (perioperative management), and published commentary does not detail direct effects on the point structure for nerve blocks and chronic pain management at the core of outpatient pain clinics.
The broader revision direction — eliminating patient signatures on care plans, creating cross-specialty coordination add-ons, revising outpatient and home base-up evaluation fees and visiting care fees — points toward supporting outpatient care, home care, multidisciplinary coordination, wage increases, and healthcare DX. For pain clinics, that expands room to build home care, palliative care, and cross-specialty coordination into the business.
2. Characteristics of newly opened clinics
New pain clinics are distinguished by being relatively lightly equipped. Medical equipment costs are described as "not that substantial," and not requiring large CT or endoscopy equipment keeps initial investment comparatively low.
At the same time, if high-quality nerve blocks are the differentiating core, imaging equipment for guided procedures — C-arm fluoroscopy and ultrasound — becomes the real investment target. Fluoroscopy- and ultrasound-guided blocks improve safety and accuracy over blind technique, and recent openings tend to foreground this as a selling point.
The general claim that this is "a specialty you can open lightly equipped" and the practical reality that differentiation requires imaging investment must be held separately.
Acquisition, location, and the relationship with orthopedics
Given the nature of pain as a presenting complaint, helping patients understand what the treatment involves is emphasized, alongside co-location with acupuncture or internal medicine, local demand assessment, and referral relationships with nearby orthopedic practices and hospitals.
The relationship with orthopedics in particular shapes the business. Where orthopedics handles structural treatment of the musculoskeletal system (surgery, rehabilitation), pain clinics handle pain control through nerve blocks. Clarifying that division builds a referral relationship rather than competition. Many community clinics co-locate or partner orthopedics and pain clinic services, creating a pathway where "pain orthopedics cannot resolve goes to blocks."
Gaining prior employment experience in anesthesiology and pain clinics is also recommended, making technical proficiency and referral network acquisition preconditions for a successful opening.
3. Revenue areas specific to pain clinics
Chronic pain management through nerve blocks
The clinical and financial core. The Japan Society of Pain Clinicians' guidelines likewise position nerve blocks as the pillar of practice.
Representative techniques include epidural blocks (lower back and leg pain, neck pain), stellate ganglion blocks (head, neck, and upper limb pain, herpes-related conditions, circulatory disorders), and various peripheral nerve blocks and trigger point injections, selected by condition. Target conditions center on herpes zoster and post-herpetic neuralgia, lower back and leg pain from lumbar disc herniation and spinal stenosis, headache and facial pain, and cancer pain.
Herpes zoster and post-herpetic neuralgia
The theme that symbolizes this field for both revenue and practice. Performing blocks early in the acute phase — stellate ganglion or epidural — is expected to prevent pain from becoming persistent, and many clinics foreground early treatment. With ageing and, alongside vaccine adoption, a continuing incidence of cases, this forms a stable demand source as the local receiving point.
Fluoroscopy- and ultrasound-guided blocks
The differentiating technology. Puncturing while confirming nerves, vessels, and targets on imaging improves safety, accuracy, and patient satisfaction — which translates directly into branding as "expertise different from an orthopedic injection." Some clinics combine day surgery for herniation (percutaneous techniques), positioning themselves in outpatient-complete minimally invasive treatment.
Expansion into palliative and home care
An anesthesiologist's pain control skills align well with cancer pain palliation, and combining them with home and visiting care adds a home care pillar to outpatient block practice. That FY2026 supports home care and multidisciplinary coordination further encourages this expansion.
Overall, pain clinic revenue is realistically designed as a three-layer structure: a core business of running insured nerve blocks at high throughput and safely, with palliative and home care and self-pay services arranged around it.
4. Self-pay services — the mixed billing boundary comes first
Self-pay can become a second revenue pillar complementing the insured core business, but must be designed with correct understanding of the regulatory constraint.
Japan prohibits mixed billing in principle: combining insured and self-pay care within the same "course of treatment" is not permitted. Commentary explains that a course of treatment covers "not just the day of care but the entire treatment period" — so operating insured care one day and self-pay the next for the same condition can be judged as mixed billing. Only cases falling under the combined insured and uninsured care framework (evaluative, selective, or patient-requested treatment) are permitted.
Pain clinic self-pay should therefore be constructed as an independent self-pay menu separated from insured pain treatment. In practice, many clinics offer placenta injections, vitamin and garlic infusion therapy, and certain aesthetic procedures.
On operations, MHLW reportedly requires for self-pay menus posting in a clearly visible location within the clinic, issuing receipts that make 100% self-pay status clear, and securing explicit patient consent — a compliance axis distinct from, and in addition to, the anesthesiology declaration posting.
In business terms, self-pay offers high unit value and freedom but depends on word of mouth, aesthetic demand, and health consciousness — less stable than insured nerve blocks. Making self-pay the main pillar is therefore risky; it belongs as supplementary revenue leveraging the core business's patient base, idle time, and equipment, designed with strict observance of the mixed billing line.
Mixing placenta or aesthetic infusions "alongside" insured pain treatment is dangerous on both mixed billing risk and accountability, making clear separation of time bands, records, and accounting the practical requirement.
5. Management implications
First, opening under an anesthesiology sign presupposes the director's personal ministerial authorization (300+ general anesthesia cases and related requirements), affecting both the opening schedule (reviews three times yearly) and staffing requirements. Where the requirement is not met, the decision to shift the declaration to pain clinic internal medicine or surgery should be made early.
Second, the differentiating core is the quality of fluoroscopy- and ultrasound-guided block technique — so rather than settling into the general claim that this is a light-investment specialty, invest precisely in imaging equipment and technical proficiency.
Third, clarifying the division with orthopedics and building a mutual referral network rather than competing is the lifeline of patient acquisition.
Fourth, early treatment of herpes zoster and post-herpetic neuralgia, and expansion into palliative and home care, are promising as stable insured revenue sources.
Fifth, design self-pay carefully as a third pillar layered on the core business, with strict observance of the mixed billing prohibition and the posting, consent, and receipt rules.
6. How an AI EMR addresses these problems — feature by feature
A pain clinic's day is built on repetition: the same block for the same patient, each time documenting site, agent, and whether imaging guidance was used. On top of that sit the referral round trip with orthopedics and strict separation of self-pay services. Here is how Pottech's AI Karte lightens all three, feature by feature.
Feature 1: Charting and orders — standardize procedure documentation
AI generates SOAP notes from consultation audio, set orders enter tests, prescriptions, and procedures in one action, and templates can be registered and recalled.
Nerve blocks generate repeated procedure records — site, agent, concentration, volume, frequency, whether imaging guidance was used. The same block is often performed on the same patient continuously, and the items to document are highly standardized.
Standardizing findings and procedure documentation through AI voice input connects directly to reduced documentation burden and prevention of missed billing. Recording delivery under fluoroscopy or ultrasound guidance also matters for safety assurance.
Feature 2: Billing and claims — control mixed billing risk
An automated calculation engine checks bundling conflicts, exclusions, and frequency limits, and determines eligibility automatically.
The greatest care in this specialty goes to the mixed billing prohibition. The constraint that insured and self-pay care cannot combine within one "course of treatment" applies across the entire treatment period, not day by day. The risk of handling placenta injections or aesthetic infusions for the same patient during the same period as insured block treatment is easily overlooked in practice.
Templating and flag-managing the posting, consent, and accounting separation requirements for self-pay menus within the EMR and billing system makes mixed billing risk easier to control. Issuing receipts that make 100% self-pay status clear is likewise a requirement the system should enforce.
Feature 3: Document generation — keep the referral round trip cheap
AI drafts referral letters and clinical information documents from patient data.
Patient acquisition here depends heavily on referrals from orthopedic practices and hospitals. For the division of roles — "pain orthopedics cannot resolve goes to blocks" — to work, referral and back-referral must circulate smoothly.
If progress reports to referrers stall, the next referral does not come. The cost of writing referral letters directly constrains the thickness of the referral network. Expanding into home palliative care for cancer pain generates further information-sharing documents for multidisciplinary teams.
Feature 4: Integrations and APIs — coordination readiness is itself an add-on
An OAuth2 gateway, MCP server, and HAPI FHIR enable integration with external systems.
FY2026 raised add-ons such as the electronic clinical information coordination readiness add-on, evaluating EMR, electronic prescription, My Number card, and clinical information coordination readiness.
In a specialty where referral coordination with orthopedics, hospitals, and home care is the linchpin, building electronic coordination capability carries meaning for both add-on capture and strengthening the referral network.
Feature 5: Booking and reception — separate block slots from outpatient slots
In-person and online bookings are managed together with segmented slot management.
Nerve blocks require a procedure room and a defined observation period, plus device time under fluoroscopy. First-visit interviews and pharmacotherapy return visits, by contrast, are short. Since the core business is running insured nerve blocks at high throughput and safely, slot design by duration determines earning power.
Where self-pay infusion therapy is offered, separating time bands also supports mixed billing risk management.
Feature 6: Patient PHR app integration ("Pote-kun") — support continuing pain management
Medication reminders, appointment booking, pre-visit web questionnaires, and LINE login with push notifications.
Chronic pain management presupposes continuing visits and medication. In the treatment strategy of performing blocks early in the acute phase of herpes zoster to prevent persistent pain, intensive early attendance determines outcomes.
Pre-visit web questionnaires pair well with structured instruments covering pain site, character, and intensity (NRS and similar), and also provide the baseline data for tracking change over time.
Primary sources
- MHLW, "Procedures for declaring anesthesiology" https://www.mhlw.go.jp/stf/newpage_10587.html
- MHLW, "Overview of the anesthesiology declaration system" https://www.mhlw.go.jp/content/10800000/000705230.pdf
- Japan Medical Association, "Methods for declaring specialty names" https://www.med.or.jp/doctor/sien/s_sien/000316.html
- Asakatsu Doctor, "What is a pain clinic? Internal medicine? Surgery? Anesthesiology?" https://www.asakatsudoctor.com/entry/2025/10/22/152856
- Japan Society of Pain Clinicians, treatment guidelines on nerve blocks https://www.jspc.gr.jp/Contents/public/pdf/shi-guide01_07.pdf
- Real Contents Japan, "Capital and key points for opening a pain clinic" https://www.realcontents.jp/column/theme01/column35/
- CLIUS Clinic Opening Magazine, "What is mixed billing?" https://clius.jp/mag/2025/03/10/clinic-mix-chiryo/
- Yuyama, "Key points and countermeasures for the FY2026 revision" https://www.yuyama.co.jp/column/medicalrecord/revision-of-medical-fees-2026-2/
- Docswell (Daitoku Oka), "FY2026 revision: fundamental restructuring of general anesthesia evaluation" https://www.docswell.com/s/daitoku0110/5VJ49P-anesthesia-reform-2026
- M3 DigiKar, "The new electronic clinical information coordination readiness add-on" https://digikar.m3.com/articles/medical-dx/article84