DRG Estimator

Estimate AR-DRG candidate groupings from MBS item numbers and optional clinical context.

Empower Your Planning Teams with Strategic Foresight

Finance Teams

Sharpen your short-term revenue forecast. Enter next week's booked surgical lists to generate planning-grade DRG estimates and NWAU values — giving your finance team earlier visibility into expected ABF revenue before month-end.

Perioperative Teams

Give clinical and operational teams earlier visibility of upcoming surgical demand. Upload a bulk list of pending MBS items to estimate likely DRG distribution and NWAU-weighted workload across your waitlist — supporting theatre planning, bed management, and activity forecasting while keeping prioritisation grounded in clinical urgency, safety, and access.

Executive Teams

See how your upcoming case mix tracks against your clinical services plan. Run your booked procedural activity through EstiMate to understand whether the DRG distribution you're delivering aligns with your service agreement, volume targets, and strategic priorities — before the data reaches your monthly reporting cycle.

For Forecasting Only — Not for Clinical or Billing Use

Results are indicative estimates only. They must not be used for official DRG grouping, clinical decision-making, or billing purposes. Official grouping requires coded episode data and a licensed grouper.

Select model

Estimate

Review results

AR-DRG version

Select an AR-DRG version to filter the available models.

Model

Choose Mondrian EstiMate or a personalised model trained on your hospital's data.

Principal Diagnosis (PDX) * (required)

Search by ICD-10-AM code (e.g. K92.2) or keyword (e.g. "haemorrhage"). Only one PDX can be selected.

Secondary Diagnoses (optional) (optional — enter "none" to confirm the episode has none and improve confidence)

Comorbidities and complications as ICD-10-AM codes (e.g. E11.9, I10). Press Enter to add a code not in the suggestions; type "none" to confirm the episode has no secondary diagnoses.

Procedures (ACHI) (optional — add ACHI codes for most accurate estimate) (optional — add ACHI codes for most accurate estimate)

Search by item number (e.g. 49100-02) or keyword (e.g. "elbow"). Select from the dropdown or press Enter to add. Paste multiple numbers separated by commas.ACHI intervention codes for this episode (optional).

MBS Items (optional — improves estimate quality) (optional — auto-mapped to ACHI where possible)

Search by item number (e.g. 49318) or keyword (e.g. "hip replacement"). Select from the dropdown or press Enter to add. Paste multiple numbers separated by commas.

Patient Age

Sex

Only Male/Female are used by the AR-DRG grouper.

Admission Type

Planned LOS (days)

Ventilation Hours

Episode Flags

Same-day episode Transferred to acute care < 5 days Died < 5 days Invasive cardiac investigation

Age in Days (neonates — overrides age in years)

Admission Weight (grams)

Clinical Notes

NEP Year — National Efficient Price year used to calculate inlier price (NWAU × NEP).

Running estimation…

Your results will appear here

Select a model and enter episode details, then click Estimate DRG

Episode	Date	MBS Items	PDX Code	Top DRG	DRG Label	Confidence	Est. NWAU	Status

DRG Estimator

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