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Grouping CCI intervention codes

cci_group.Rd

The Canadian Classification of Health Interventions (CCI) codes provide a detailed classification of all inpatient interventions in Canada, with more than 17,000 unique, alphanumeric codes.

The cci_group() function categorizes CCI codes into broader, clinically meaningful intervention categories based on each code's first 3 characters.

Broadly, intervention codes can be grouped into the following CCI Sections based on the first digit:

  • 1: Physical/Physiological Therapeutic Interventions (1AA - 1ZZ)

  • 2: Diagnostic Interventions (2AA - 2ZZ)

  • 3: Diagnostic Imaging Interventions (3AF - 3ZZ)

  • 5: Obstetrical and Fetal Interventions (5AB - 5PD)

  • 6: Cognitive, Psychosocial and Sensory Therapeutic Interventions (6AA - 6VA)

  • 7: Other Healthcare Interventions (7SC - 7SJ)

  • 8: Therapeutic Interventions Strengthening the Immune System and/or Genetic Composition (8AA - 8ZZ)

Each section can further be broken down into more detailed subsections, based on the CCI group (2nd-3rd character).For example, CCI codes in Sections 1-3 can be differentiated by anatomy region, such as:

  • Therapeutic Interventions on the Nervous System (1AA - 1BZ)

  • Therapeutic Interventions on the Eye and Ocular Adnexa (1CC - 1CZ)

  • Therapeutic Interventions on the Ear and Mastoid (1DA - 1DZ)

  • etc.

For a complete list of all subsections, see CIHI CCI sections and code ranges.

Usage

cci_group(cci_codes)

Arguments

cci_codes

(data.frame | data.table) Table containing intervention_code column that lists all CCI intervention codes of interest (e.g., from the ipintervention or erintervention table).

Value

data.table Data table containing the CCI codes of interest, together with their corresponding groupings as follows:

  • section (numeric): CCI section number (based on first character)

  • section_descr (character): Section description

  • subsection (character): CCI subsection (first 3 characters)

  • subsection_descr (character): Subsection description

References

https://www.cihi.ca/en/overview-of-cci-sections-and-code-ranges

Examples

cci_codes <- data.frame(intervention_code = c(
  "1MA52HA", "2PB70DA", "3SC10KM", "5LB08ZZ", "6KA02ME", "8AA70BABA"
))
res <- cci_group(cci_codes)