For years, outpatient clinics in Abu Dhabi were paid by the line: list each procedure, attach a CPT or E&M code, and the insurer paid per item. That model is ending.
ADOC, the Abu Dhabi Outpatient Classification, is a national system from the Department of Health, Abu Dhabi that maps each outpatient visit to a single class across four series, P, C, S, and D, and pays for the whole visit as one unit. Circular 76 of 2026 sets the timeline: mandatory shadow billing from 1 July 2026, then go-live on 1 January 2027.
This guide breaks down what ADOC is, how the four series and five counting rules work, how payment is calculated, and how to get your facility ready in time.
What Is ADOC and Why Is Abu Dhabi Moving Away From Fee-for-Service?
ADOC is the Department of Health’s national framework for classifying and paying for outpatient care in Abu Dhabi. It groups each visit into one of four series and gives it a single class, and that class decides what the visit pays.
The old fee-for-service model billed each procedure on its own line. More codes meant more revenue, so the same visit could produce very different bills across facilities.
That rewarded volume, not outcomes, and left the health system with no clear read on what outpatient care actually cost. ADOC replaces it with casemix-based payment: one visit, one class, one calculation.
The change follows a wider move toward value-based healthcare, the same direction taken by systems in countries such as Australia and England. For providers, the key question shifts from how many services were coded to whether the encounter was classified correctly.
What Are the Four ADOC Series?
ADOC sorts all outpatient care into four series. The series answers one question: what kind of care was this? Choosing it correctly is the first step in every ADOC claim.
| Series | What it covers | Key point |
| P (Interventional) | Minor surgical and interventional procedures that do not need admission | Classified by the site and type of procedure, not by the specialty that performed it |
| C (Consultations) | Face-to-face specialist evaluation and management of a condition | Routine non-invasive tests in the same visit are bundled in, not billed separately |
| S (Support) | Non-physician care such as physiotherapy, psychology, rehabilitation, and wound care | Some classes stay unpriced while the DoH gathers enough data to set a rate |
| D (Diagnostics) | Imaging, pathology, and physiological measurements | Zero value and cannot be billed alone; must link to a P, C, or S event |
A visit can touch more than one series. A consultation (C) that also includes a minor procedure (P) may produce two events, which is where the counting rules come in.
How Is Payment Calculated Under ADOC?
Payment is no longer the sum of fee-for-service lines. Each class carries a DoH base price that is then adjusted for the patient and the facility.
The Payment Formula and Its Adjusters
The billable amount is the base price multiplied by a set of adjusters:
Billable amount = Base price × Age adjuster × Regional adjuster × Quaternary adjuster × Cost block multiplier
The base price is the DoH’s average cost for that class across the Emirate. The age adjuster reflects the patient’s age, with separate rates for children under 18 and seniors aged 60 and older.
A regional adjuster applies a small reduction for facilities in Al Ain and Al Dhafra. A higher quaternary adjuster applies to certified Centres of Excellence, but only within their approved clinical area.
Your facility’s negotiated cost block multiplier is applied last, per series. Exact adjuster values sit in the DoH ADOC price list and change between versions, so confirm them there before modelling numbers.
Why a Zero List Price Is Not Zero Payment
P, C, and S classes show a listed price of zero in the DoH database. That zero is deliberate.
Actual reimbursement is worked out by the insurance system’s backend engine using casemix schedules, not read from the list. A zero list price does not mean the visit pays nothing.
What Are the Five ADOC Counting Rules?
First, the unit ADOC counts is the outpatient service event: a documented interaction between a licensed provider and a single patient that carries real clinical content and creates a dated entry in the medical record. A reminder call or an appointment booking does not qualify.
Choosing the class is only half the job. These five rules decide how many billable events a visit produces, and they are where early claims are most often rejected.
- One class per event. A single event maps to the one class that best fits the main nature of the care. You cannot bill several classes from the same series for one encounter, same day, same clinician.
- One event, whatever the clinician count. Several clinicians in one encounter still make one event. If three or more from different specialties take part, the provider can flag the multiple clinician indicator, but the count stays at one.
- One event per series, per day, per clinician. The same clinician cannot bill two classes from the same series for one patient on the same day. If several occur, only the higher-weighted class pays. Different series can each produce an event that day.
- Setting exclusions apply. ADOC does not cover inpatient wards, emergency, home care, daycare, or standard primary care. Care in those settings must not be sent as an ADOC event.
- Diagnostics must be linked, never standalone. D series items are inputs, not events. Each is reported at zero value and linked to a primary P, C, or S event using the ordering clinician’s ID.
How Are Teleconsultations, Case Conferences, and Group Sessions Handled?
Some situations sit outside the plain rules and have their own treatment.
A teleconsultation is reimbursable only when it is a clinically necessary, direct substitute for a face-to-face visit. Administrative calls do not qualify.
A multidisciplinary case conference held without the patient present can be claimed as one event per patient discussed, if at least three professionals from different specialties take part and a documented care plan results.
In a group session, each participating patient counts as a separate event, and the claim must carry the group session indicator so the system reads it correctly.
How Does ADOC Change Coding, Claims, and Your Revenue Cycle?
ADOC is not a new fee schedule. It replaces the billing logic your revenue team has used for years, so several parts of the claim change at once:
- E&M coding is retired for in-scope outpatient care from go-live. A consultation that once carried an E&M code now carries a single class, and routine tests in that visit are bundled in rather than billed as extra lines.
- Follow-up mechanics change. The old CPT modifiers give way to ADOC observation indicators reported inside the Shafafiya claim data.
- ActivityType 11 is mandatory. Every ADOC activity sent to Shafafiya must use this field to flag the claim as an ADOC event, not a legacy fee-for-service line. The wrong value can mean rejection or underpayment.
- Pre-authorisation eases for diagnostics. ADOC removes the need for insurance pre-authorisation on D series diagnostics ordered as part of an in-scope event, cutting a common point of friction between providers and payers.
The practical risk sits in the detail: correct class, correct counting, correct data field, on every claim. Tools that check each claim before it reaches the payer, such as a claim scrubber that catches errors before submission, help teams hold that accuracy once volume ramps up.
What Are the Key ADOC Dates Every Facility Needs to Know?
The DoH set the ADOC timeline in Circular 76 of 2026. Three points matter for planning.
| Date | Phase | What happens |
| May to June 2026 | Orientation and readiness | Draft pricing shared with providers, along with DoH orientation workshops on the system |
| 1 July 2026 | Mandatory shadow billing | All outpatient providers, insurers, and claims companies submit ADOC class codes through Shafafiya, alongside normal billing. Claims are still paid on the old model during this phase |
| 1 January 2027 | Official go-live | ADOC becomes the primary reimbursement mechanism for outpatient care in Abu Dhabi |
Two exclusions apply to the mandatory phase: dental service providers and pharmacies. Every other in-scope outpatient provider is included.
Shadow billing is a test window, not an optional one. It lets you submit ADOC codes in parallel and find errors while payment still runs on the old model. Once go-live arrives, that safety net is gone, and a wrong class or a missing data field starts affecting real revenue.
That makes the months before January 2027 the time to get clinical mapping, systems, and staff training in place, rather than after payment depends on it.
How Do You Prepare Your Facility for ADOC?
ADOC is not an IT update. It reaches clinical operations, medical records, billing, systems, and finance, so treat it as a cross-team programme rather than a software switch.
Map Your Services and Model Your Revenue
Start by mapping every service you deliver to the right series and class, with clinical input, not billing alone. A visit that looks like a simple consultation may hide a P series procedure that changes the event count.
Then model your expected income. Apply your cost block multipliers to the DoH base prices to see what each class pays, and flag where ADOC leaves a gap against your current revenue.
Watch the same-day combinations closely. A consultation and an endoscopy by the same clinician are two events, while two same-series consultations by that clinician are one. Your workflow needs to reflect that before go-live.
Configure Your Systems and Train Your Teams
Your EMR and billing system need to generate ADOC class codes, enforce the same-day series limits, capture the multiple clinician indicator, apply the follow-up rules, and output ActivityType 11 in the Shafafiya file.
Staff training runs in parallel. Clinicians need to know what counts as a valid event and when the multiple clinician indicator applies. Billing teams need the five counting rules cold, so they do not generate denials at scale.
Use the shadow billing phase as your live test. Submit ADOC codes alongside your normal claims, validate the file against the Shafafiya schema, and fix structural errors while payment still runs on the old model.
What Your Facility Should Do Next
ADOC changes the core logic of outpatient billing in Abu Dhabi, from a list of separate procedure codes to a single class per visit. The dates are fixed: shadow billing since 1 July 2026, and go-live on 1 January 2027.
The facilities that cope best will treat the months before go-live as preparation time, not a formality. Map your services, model your revenue per class, configure your systems to output the right data, and train clinical and billing teams on the counting rules.
Use the shadow phase to find and fix errors while payment still runs on the old model. Once ADOC goes live, accuracy on every claim is what protects your revenue.
Frequently Asked Questions About ADOC
What does ADOC stand for?
ADOC stands for the Abu Dhabi Outpatient Classification. It is the Department of Health’s national system for classifying and paying for outpatient care in Abu Dhabi. It maps each visit to a single class across four series, P, C, S, and D.
When does ADOC come into effect?
Mandatory shadow billing began on 1 July 2026, and ADOC becomes the primary reimbursement mechanism for outpatient care on 1 January 2027. These dates come from DoH Circular 76 of 2026. During shadow billing, claims are still paid on the old model while facilities test their submissions.
Does ADOC replace CPT and E&M coding?
For in-scope outpatient care, yes. From go-live, E&M coding is retired, and a visit carries a single ADOC class instead of separate procedure and E&M lines. Routine non-invasive tests done in that visit are bundled into the class rather than billed on their own.
Who is exempt from ADOC shadow billing?
Dental service providers and pharmacies are excluded from the mandatory shadow billing phase. Every other in-scope outpatient provider, along with insurers and claims management companies, is included. ADOC also does not apply to inpatient wards, emergency, home care, daycare, or standard primary care.
Why does an ADOC class show a price of zero?
P, C, and S classes list a price of zero in the DoH database by design. Actual payment is calculated by the insurance system’s backend engine using casemix schedules, not read from the list price. A zero list price does not mean the visit pays nothing.
What happens if a claim uses the wrong ActivityType?
Every ADOC activity sent to Shafafiya must use ActivityType 11 to flag it as an ADOC event. If the field is wrong, the claim can be rejected or systematically underpaid. This is why testing submissions during the shadow phase matters before real revenue depends on them.
