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Individually Identifiable Health Information

IIHI
operations
Updated 5/16/2026

Definition

Any health information in EHR, claims, or administrative systems that can be used to identify a specific individual and relates to their past, present, or future health condition, care provision, or payment. IIHI is governed under HIPAA Privacy Rule and must be safeguarded by covered entities and business associates.

Standard Abbreviation

IIHI

Category

operations

Database Usage

-- Example column naming
CREATE TABLE claims (
  clm_id VARCHAR(50),
  iihi VARCHAR(100),  -- Individually Identifiable Health Information (max 100 chars)
  ...
);

-- Example in SELECT
SELECT
  clm_id,
  iihi as individually_identifiable_health_information
FROM claims;

Common uses in healthcare data

  • Healthcare data warehouse schema design and modeling
  • Interoperability and cross-system data exchange
  • ETL pipeline development and orchestration
  • Master data management (MDM) programs
  • Analytics and business intelligence reporting

Example database column name

ISO-11179 snake_case standard

-- Recommended column name
iihi

-- Example DDL
CREATE TABLE healthcare_data (
  record_id   VARCHAR(50)   NOT NULL,
  iihi         VARCHAR(100),  -- Individually Identifiable Health Information (max 100 chars)
  created_dt  TIMESTAMP     NOT NULL DEFAULT NOW()
);

Column names follow the ISO-11179 naming convention: lowercase, underscore-separated, using the standard abbreviation as a prefix where applicable.

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