Why Care Homes Need to Implement IDDSI
Hong Kong has approximately 800 subsidised and private elderly care homes, housing over 70,000 residents. Estimates suggest 30–50% of these residents have some degree of dysphagia. Before IDDSI, terms such as “soft diet” or “purée diet” carried no standardised definition — the same label could describe anything from slightly softened rice to fully blended food, creating real variability in swallowing safety.
The SWD’s Direction
The Social Welfare Department (SWD) has progressively emphasised standardised assessment and documentation of residents’ dietary texture requirements through the Standardised Care Need Assessment Mechanism for Elderly Services (SAMS) and revisions to the Code of Practice for Residential Care Homes. The HKCSS Care Food Endorsement Scheme has become the primary driver for IDDSI adoption in the sector, and is increasingly linked to government procurement scoring and funding conditions.
Implementing IDDSI is not only about regulatory compliance. It is a core strategy for reducing aspiration pneumonia, lowering hospitalisation rates and protecting institutional reputation.
Note: This guide provides practical reference information and does not constitute legal advice. Consult a speech-language pathologist and your supervising authority before beginning implementation.
Staff Training Requirements
The foundation of successful IDDSI implementation is whole-team training — not just training the kitchen staff.
Staff Categories Requiring Training
Chefs and kitchen staff
- Definitions of all 8 IDDSI levels and physical testing methods (fork pressure test, syringe flow test)
- Food preparation techniques for each level (sieving purées, mincing standards for Level 5)
- Prohibited food list and identification of mixed-texture foods
- Correct measurement and preparation of thickened drinks
Care workers
- Visual characteristics of each IDDSI level
- How to access individual dietary records
- Mealtime observation and recording (coughing frequency, intake volume)
- Warning signs that must be reported to the nurse
Nurses and supervisors
- Reading and implementing IDDSI diet prescriptions
- Recording and communicating diet level changes
- Medication effects on swallowing function
- Emergency procedures (choking response)
Management
- IDDSI framework overview and Hong Kong compliance context
- Documentation management requirements
- Supplier communication (food procurement and labelling requirements)
Training Resources
IDDSI Official e-Learning
- Free self-study courses covering framework theory and testing methods
- Available at: iddsi.net/Training
Hong Kong Dysphagia Association (HKDA)
- Regularly organises training workshops relevant to care homes
- Website: hkda.org.hk
Hong Kong Speech and Language Therapy Association (HKSLTA)
- Can refer SLPs experienced in care home training
- Website: hkslta.org.hk
Kitchen Workflow Changes
Transitioning from a traditional soft diet to IDDSI standards involves the following principal workflow adjustments.
Standardising the Preparation Process
- Daily pre-service check: Review the day’s dietary record for all residents requiring texture-modified meals; note IDDSI levels and headcount for each
- Batch preparation by level: Prepare different IDDSI levels in separate batches; never combine
- Texture testing: Perform the fork pressure test on each batch of Level 4–6 food before serving; record results
- Thickened drink preparation: Prepare drinks per each resident’s individual diet prescription (thickener type, brand and grams per 150/200 ml); weigh using a digital scale
- Labelling and service: Every portion must be clearly labelled with the resident’s name and IDDSI level; a colour-coded label system is recommended
Equipment Requirements
Implementing IDDSI typically requires the following additional equipment (depending on what is already available):
- Commercial blender (700W+) for preparing Level 3–4 foods
- Fine-mesh sieve (to ensure purées are lump-free)
- Digital kitchen scale (1g precision, for thickener measurement)
- 10ml syringes (syringe flow test; can be cleaned and reused)
- Food moulds (optional; for shaping Level 4 purées to resemble original foods)
Notes on Thickened Drinks
- Thickened drinks should be prepared and served within 5 minutes (resting times cause continued thickening)
- Xanthan gum-based thickeners maintain more stable consistency in hot and cold liquids than starch-based products and are generally preferred
- Verify consistency whenever a new batch of thickener (same brand, new packaging) is opened
Documentation Requirements
Thorough documentation is the care home’s principal protection in the event of an adverse incident, and a key indicator of service quality.
Individual Dietary Records
Each resident should have an individual dietary record containing:
- IDDSI diet level as prescribed by the SLP (food texture and drink thickness recorded separately)
- Prescription date and next review date
- Thickener type, brand and grams per 150/200 ml of liquid
- Prohibited food list
- Feeding posture requirements
- Date of last update and name of person updating
Daily Mealtime Observation Records
Care workers should record after each meal:
- Intake percentage (estimated proportion of normal portion consumed)
- Fluid intake (ml)
- Number of coughing episodes (if any)
- Abnormal behaviour (refusal, early fatigue, distress)
Incident Records and Reporting
The following must be recorded immediately and reported per care home protocols:
- Visible choking or near-choking requiring intervention during a meal
- A resident consuming food above their prescribed IDDSI level
- A resident refusing virtually all food or fluid for 24 hours or more
Cost Considerations
Implementing IDDSI increases some kitchen costs, but most are manageable with good planning.
Principal Cost Components
| Item | Estimated Cost | Notes |
|---|---|---|
| Commercial blender | HKD 2,000–8,000 | One-time purchase; shared across kitchen |
| Digital kitchen scale | HKD 200–500 | One to two per kitchen |
| 10ml syringes | HKD 5 each | Reusable after cleaning |
| Food moulds (set) | HKD 500–2,000 | Optional; improves resident appetite |
| Increased thickener cost | Varies | Xanthan gum costs more per pack but requires smaller doses |
| Staff training time | Varies by size | Higher initially; ongoing training lower cost |
Cost-Saving Strategies
- Negotiate volume discounts with thickener suppliers for care home accounts
- Batch-prepare and refrigerate or freeze purée portions to reduce daily preparation time
- Use IDDSI’s free online resources rather than purchasing commercial training materials
- Co-organise training with nearby care homes to share facilitator costs
Pilot Programme: Starting with 10 Residents
Whole-home implementation in a single transition carries significant operational risk. A pilot approach is strongly recommended.
Pilot Programme Steps
Weeks 1–2: Preparation
- Select 10 residents with existing SLP assessments as pilot participants; ideally choose a mix of IDDSI levels to test different preparation workflows
- Complete foundational IDDSI training for chefs and care workers
- Procure necessary equipment and thickener stock
- Design individual dietary record forms
Weeks 3–4: Pilot execution
- Prepare and serve meals according to each pilot resident’s IDDSI level
- Record daily mealtime observations
- Chefs perform fork pressure tests on each batch and log results in the pilot record
Weeks 5–6: Evaluation and adjustment
- Collate pilot data: coughing incidents, intake changes, staff feedback
- Adjust any problematic workflow elements
- Invite the SLP to reassess pilot residents’ mealtime performance
Week 7 onwards: Expansion
- Progressively extend IDDSI standards to all residents with identified dysphagia
- Establish a standard IDDSI assessment referral pathway for newly admitted residents
Sample Kitchen Checklist
The following is a daily kitchen checklist (sample — adjust for your home’s operational context):
Before preparation
- Review the day’s list of residents requiring texture-modified meals and their IDDSI levels
- Confirm adequate thickener stock
- Clean blender and sieve
During preparation
- Prepare each IDDSI level in separate batches; no mixing
- Level 4 purées: sieve after blending and visually confirm no lumps
- Level 5 minced: confirm particles do not exceed 4mm
- Level 6 soft and bite-sized: confirm each piece does not exceed 15mm × 15mm
- Thickened drinks: weigh thickener per individual dietary record; document
Texture testing
- Fork pressure test on each batch of Level 4–6 food; record result
- Visual thickness check on all thickened drinks (or syringe flow test if required)
Before service
- Label each portion with resident name and IDDSI level
- Cross-check labels against the day’s resident list
Hong Kong Resources
- HKSLTA (Hong Kong Speech and Language Therapy Association): referral and consultancy for care homes — hkslta.org.hk
- HKDA (Hong Kong Dysphagia Association): care home training and resources — hkda.org.hk
- HKCSS Care Food Endorsement Scheme: full scheme details — hkcss.org.hk
- IDDSI official website: free framework documents and testing cards — iddsi.net
- Social Welfare Department elderly services: care home supervision and policy guidance — swd.gov.hk
Information is updated periodically to reflect the latest clinical guidance and Hong Kong regulatory developments. For enquiries, contact [email protected].