download_ccsr: Download CCSR Mapping Files from HCUP

In HCUPtools: Access and Work with HCUP Resources and Datasets

Download CCSR Mapping Files from HCUP

Description

Downloads and loads Clinical Classifications Software Refined (CCSR) mapping files directly from the Agency for Healthcare Research and Quality (AHRQ) Healthcare Cost and Utilization Project (HCUP) website.

Usage

download_ccsr(
  type = "diagnosis",
  version = "latest",
  cache = TRUE,
  clean_names = TRUE
)

Arguments

type	Character string specifying the type of CCSR file to download. Must be one of: "diagnosis" (or "dx") for ICD-10-CM diagnosis codes, or "procedure" (or "pr") for ICD-10-PCS procedure codes. Default is "diagnosis".
version	Character string specifying the CCSR version to download. Use "latest" to download the most recent version, or specify a version like "v2026.1", "v2025.1", etc. Default is "latest".
cache	Logical. If TRUE (default), the downloaded file is cached in a temporary directory to avoid re-downloading on subsequent calls.
clean_names	Logical. If TRUE (default), column names are cleaned to follow R naming conventions (snake_case).

Details

This function downloads CCSR mapping files directly from the HCUP website. The package does not redistribute these files but facilitates access to the official AHRQ data sources.

The function handles:

• Automatic URL construction based on type and version

• ZIP file download and extraction

• Proper encoding of special characters

• Preservation of leading zeros in ICD-10 codes

• Conversion to tidy tibble format

Value

A tibble containing the CCSR mapping data with the following columns:

• For diagnosis files: ICD-10-CM code, CCSR category, default CCSR category, and clinical descriptions

• For procedure files: ICD-10-PCS code, CCSR category, and descriptions

Examples

# Download latest diagnosis CCSR mapping
dx_map <- download_ccsr("diagnosis")

# Download specific version of procedure CCSR mapping
pr_map <- download_ccsr("procedure", version = "v2025.1")

# Download without caching
dx_map <- download_ccsr("diagnosis", cache = FALSE)

HCUPtools documentation built on July 13, 2026, 9:06 a.m.