What supplementary modules actually are

The NDIS Practice Standards are split into two layers. The Core Module applies to every certification provider — it covers the 18 Outcomes across Rights, Governance, Provision of Supports, and Support Environment that we walk through in our Core Module explainer. Supplementary modules add specialist requirements on top of the Core Module for higher-risk supports.

The current supplementary modules are: High Intensity Daily Personal Activities, Specialist Behaviour Support, Early Childhood Supports, Specialised Support Coordination, and Implementing Behaviour Support Plans. There is also a Verification Module that operates differently — it replaces the Core Module rather than supplementing it (see our verification vs certification audit guide for the boundary).

How they sit on top of the Core Module

A common misunderstanding I see in support-worker forums: providers assume that if they have a supplementary module document set, they don't need the Core Module documents as well. They do. The Practice Standards are cumulative, not substitutional. If your audit scope includes Specialist Behaviour Support, the auditor checks your Behaviour Support Module documents AND every Core Module Outcome from 1.1 through 4.5.

What this means practically: a Specialist Behaviour Support provider's documentation pack contains roughly the 65 Core Module documents (the foundation set in our Complete SIL Kit) PLUS an additional 8–15 module-specific documents. A High Intensity Daily Personal Activities provider needs Core plus another 10–14. Treating the supplementary modules as "an extra layer of policies" — rather than as a replacement set — saves a week of confusion.

Which modules apply to which registration groups

Your audit scope is determined by your registration groups, which are set when you apply to the NDIS Commission. The supplementary module follows the registration group, not your preference.

Registration GroupSupplementary Module Required
Daily Activities — High Intensity (0104)High Intensity Daily Personal Activities Module
Community Participation — High Intensity (0125)High Intensity Daily Personal Activities Module
Specialised Behaviour Support (0110)Specialist Behaviour Support Module
Assistance in a Shared Living Arrangement / SIL (0115) — where restrictive practices applyImplementing Behaviour Support Plans Module
Early Childhood Supports (0118)Early Childhood Supports Module
Specialised Support Coordination (0132)Specialised Support Coordination Module

If you hold multiple certification groups — for example, a SIL provider also delivering High Intensity Daily Activities and using restrictive practices — you might be on the hook for two or three supplementary modules at once. The audit cost scales with module count; this is one of the reasons we keep banging on about scoping your registration groups carefully (covered in our SIL provider registration guide).

High Intensity Daily Personal Activities

The High Intensity module applies if you deliver complex personal-care supports — things like complex bowel care, tracheostomy management, ventilation, enteral feeding, complex wound management, urinary catheter management, dysphagia support, severe dysphagia, subcutaneous injections, complex skin integrity care, and so on. Our High Intensity Module guide walks through the full scope.

The module adds requirements around staff training (specifically clinical-skills competency verification, not generic induction), worker-skill matching to participant need, escalation procedures, and clinical-supervision documentation. The auditor will look for evidence that staff delivering a particular high-intensity support have been signed off as competent in that specific support, not just in "personal care" generally.

Specialist Behaviour Support

This module applies to providers delivering specialist behaviour support — typically NDIS-registered Behaviour Support Practitioners (BSPs) developing Behaviour Support Plans. It is distinct from the Implementing Behaviour Support Plans module, which applies to providers (often SIL providers) carrying out a plan written by someone else.

Specialist Behaviour Support requires documented evidence of practitioner qualifications, clinical supervision, functional behaviour assessment processes, plan development and review cycles, and restrictive practice authorisation pathways. The full breakdown is in our Behaviour Support Module guide and the restrictive practices policy guide for the reporting side.

Early Childhood Supports

The Early Childhood Supports module applies to providers delivering NDIS supports to children under 9, particularly under the Early Childhood Approach. Documentation emphasises family-centred practice, capacity-building approaches, mainstream-service linkages, and developmental rather than deficit framing in support plans.

If you only deliver supports to participants aged 9 and over, this module does not apply. Many small SIL providers occasionally take on younger participants and assume they need this module — they don't, unless they are formally registered in the Early Childhood Supports group (0118).

The template documents you actually need

Across the supplementary modules, the additional document types are reasonably consistent — the content varies by module, but the document shapes repeat. If you need supplementary module templates, plan for these categories:

Core Module foundation: ready to download

The 74-document Complete SIL Kit covers every Core Module Outcome. Supplementary module add-ons are on our 2026 roadmap. $297 early bird (GST-inclusive AUD). 30-day guarantee.

See what's in the kit →

What auditors check on the day

The supplementary module audit overlay sits inside the same on-site audit visit as the Core Module review (see our certification audit guide for the day-by-day breakdown). The auditor doesn't run a "Core Module morning, supplementary module afternoon" structure — they weave the supplementary checks into the same staff interviews, file reviews, and observation passes.

What we see most often flagged as a non-conformity in supplementary module reviews is the policy-practice gap (the same pattern as in Core Module audits — see our non-conformance guide). Staff know the Core Module policies; they can't articulate the supplementary module requirements. This is often because the supplementary module documents were prepared at audit-time rather than embedded in the day-to-day operation. The auditor's interview question is usually some version of "describe a situation where you would escalate" — and if staff can't answer in plain language, the documents alone won't save the audit.

Practically, this means the supplementary module documents need to be live operational documents, not audit decorations. Doc 32 (the Staff Induction Checklist in the kit) should be extended with the supplementary module competency checks when the module applies. Doc 33 (Supervision Record) should reflect the higher supervision frequency the module requires. The documents must show evidence of being used — file timestamps, signature dates, supervision notes referring back to module-specific outcomes — not just existence.

If you've already worked through the SIL Audit Survival Guide for your Core Module pack, the supplementary module overlay adds maybe 25–40% extra documentation work depending on the module. The principle is identical: every Quality Indicator gets a policy + an implementation record + an observable practice. The supplementary modules add Quality Indicators; the principle doesn't change.

For the day-to-day note-writing that demonstrates supplementary module compliance in practice, the free NDIS Notes Rewriter rewrites support-worker notes into Practice-Standards-aligned language — including the module-specific terminology auditors expect (e.g., correct restrictive-practice language under the Behaviour Support module, correct clinical-language framing under High Intensity).

Important: This article provides general guidance about NDIS compliance requirements. It is not legal or professional advice. Requirements may change as the NDIS Commission updates its policies and Practice Standards. Always verify current requirements with the NDIS Quality and Safeguards Commission or a registered NDIS consultant before making compliance decisions.