Healthcare Quality · 24 Apr 2026 · 1 min read

Complaint Handling in Healthcare — NABH and ISO 15189 Requirements

Effective complaint handling is both an ethical obligation and an accreditation requirement. Patient and user complaints are valuable quality improvement opportunities — if handled correctly.

Effective complaint handling is both an ethical obligation and an accreditation requirement. Patient and user complaints are valuable quality improvement opportunities — if handled correctly.

Both ISO 15189:2022 and NABH standards require a documented, systematic approach to complaint management. This goes beyond simply “addressing” complaints — it requires investigation, root cause analysis, corrective action, and feedback to the complainant.

NABH and ISO 15189 Complaint Requirements

  • Documented complaint handling procedure
  • Accessible complaint mechanism (physical complaint box, online form, phone)
  • Timely acknowledgement of complaints
  • Investigation and root cause analysis
  • Corrective action to prevent recurrence
  • Response to complainant within defined timeframe
  • Complaint log maintained and trended
  • Complaints discussed at management review

Turning Complaints into Improvements

The most valuable aspect of complaint handling is using complaints to drive systemic improvement. Regularly analyse your complaint log:

  • Which departments receive the most complaints?
  • Are there repeat themes (delay, communication, staff attitude)?
  • What percentage of complaints are closed within the target timeframe?
  • What quality improvement initiatives have been driven by complaints?

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